All Stories

  1. Ultrasensitive Enzyme-Free Detection of Proteins on Magnetic Beads

    Article • Journal of the American Chemical Society, March 2026, American Chemical Society (ACS)

    David Walt

  2. Antigen heterogeneity in the development and clinical validation of a multiplexed urine test for tuberculosis

    Article • Communications Medicine, March 2026, Springer Science + Business Media

    David Walt

  3. Personalized Autoantibody Profiling Distinguishes Early-stage Breast Cancer from Benign Disease

    Article • January 2026, openRxiv

    David Walt

  4. Digital CRISPR-based diagnostics for quantification of Candida auris and resistance mutations

    Article • Nature Biomedical Engineering, January 2026, Springer Science + Business Media

    David Walt

  5. Impact of COVID-19 mRNA vaccination on metabolic profiles in patients with lymphoid malignancies 3780

    Article • The Journal of Immunology, November 2025, Oxford University Press (OUP)

    David Walt

  6. Single-Molecule Array (Simoa) Technology as a Highly Sensitive Screening Tool for Protein–Protein Interactions

    Article • ACS Sensors, October 2025, American Chemical Society (ACS)

    David Walt

  7. Digital seed amplification assay for TDP-43 aggregate quantification in CSF

    Article • October 2025, Cold Spring Harbor Laboratory Press

    David Walt

  8. Anfinsen Redux: Ribonuclease Folding in the Single-Molecule Regime

    Article • Journal of the American Chemical Society, October 2025, American Chemical Society (ACS)

    David Walt

  9. Quantification of fibrinaloid clots in plasma from pediatric Long COVID patients using a microfluidic assay

    Article • October 2025, Springer Science + Business Media

    David Walt

  10. Single-Cell and Plasma Proteomics Do Not Differentiate Patients With and Without SARS-CoV-2 Antigenemia in Convalescence in a Cohort of 100 Patients

    Article • Open Forum Infectious Diseases, August 2025, Oxford University Press (OUP)

    David Walt

  11. Viral spike antigen clearance and augmented recovery in children with post-COVID multisystem inflammatory syndrome treated with larazotide

    Article • Science Translational Medicine, July 2025, American Association for the Advancement of Science

    David Walt

  12. A single-molecule array urine test for tuberculosis: A case-control diagnostic accuracy study

    Article • June 2025, Cold Spring Harbor Laboratory Press

    David Walt

  13. Measurement of α-synuclein as protein cargo in plasma extracellular vesicles

    Article • Proceedings of the National Academy of Sciences, October 2024, Proceedings of the National Academy of Sciences

    David Walt

  14. A Multiplexed Digital Platform Enables Detection of Attomolar Protein Levels with Minimal Cross-Reactivity

    Article • ACS Nano, October 2024, American Chemical Society (ACS)

    David Walt

  15. Heterotypic immunity from prior SARS-CoV-2 infection but not COVID-19 vaccination associates with lower endemic coronavirus incidence

    Article • Science Translational Medicine, June 2024, American Association for the Advancement of Science

    David Walt

  16. Measuring alpha-synuclein aggregates for Parkinson's Disease Diagnostics

    Article • Proceedings of the National Academy of Sciences, January 2024, Proceedings of the National Academy of Sciences

    David Walt

  17. Efficient discovery of antibody binding pairs using a photobleaching strategy for bead encoding

    Article • Lab on a Chip, January 2024, Royal Society of Chemistry

    David Walt

  18. Assessment of extracellular vesicle protein cargo as neurodegenerative disease biomarkers

    Article • November 2023, Cold Spring Harbor Laboratory Press

    David Walt

  19. Heterotypic responses against nsp12/nsp13 from prior SARS-CoV-2 infection associates with lower subsequent endemic coronavirus incidence

    Article • October 2023, Cold Spring Harbor Laboratory Press

    David Walt

  20. Response by Yonker et al to Letter Regarding Article, “Circulating Spike Protein Detected in Post–COVID-19 mRNA Vaccine Myocarditis”

    Article • Circulation, September 2023, Wolters Kluwer Health

    David Walt

  21. Ultrasensitive Detection of Circulating LINE-1 ORF1p as a Specific Multicancer Biomarker

    Article • Cancer Discovery, September 2023, American Association for Cancer Research (AACR)

    David Walt

  22. Ultrasensitive Protein Detection Technologies for Extracellular Vesicle Measurements

    Article • Molecular & Cellular Proteomics, June 2023, Elsevier

    David Walt

  23. Improved isolation of extracellular vesicles by removal of both free proteins and lipoproteins

    Article • eLife, May 2023, eLife

    David Walt

  24. Impact of Donor and Recipient SARS-CoV-2 Vaccination or Infection on Immunity after Hematopoietic Cell Transplantation

    Article • Transplantation and Cellular Therapy, May 2023, Elsevier

    David Walt

  25. Circulating Spike Protein Detected in Post–COVID-19 mRNA Vaccine Myocarditis

    Article • Circulation, March 2023, Wolters Kluwer Health

    David Walt

  26. Nanopore-Based Fingerprint Immunoassay Based on Rolling Circle Amplification and DNA Fragmentation

    Article • ACS Nano, March 2023, American Chemical Society (ACS)

    David Walt

  27. Disulfide Bonds Are Not Necessary for Intrinsic TNSALP Activity

    Article • The Journal of Physical Chemistry B, February 2023, American Chemical Society (ACS)

    David Walt

  28. Ultrasensitive detection of circulating LINE-1 ORF1p as a specific multi-cancer biomarker

    Article • January 2023, Cold Spring Harbor Laboratory Press

    David Walt

  29. Improved Isolation of Extracellular Vesicles by Removal of Both Free Proteins and Lipoproteins

    Article • January 2023, Cold Spring Harbor Laboratory Press

    David Walt

  30. EP074/#619 Single molecule array (SIMOA) for the detection of cervical dysplasia and cancer

    Article • December 2022, BMJ

    David Walt

  31. Reply to Alaedini and Wormser

    Article • Clinical Infectious Diseases, November 2022, Oxford University Press (OUP)

    David Walt

  32. An Assessment of a Rapid SARS-CoV-2 Antigen Test in Bangladesh

    Article • American Journal of Tropical Medicine and Hygiene, October 2022, American Society of Tropical Medicine and Hygiene

    David Walt

  33. Persistent Circulating Severe Acute Respiratory Syndrome Coronavirus 2 Spike Is Associated With Post-acute Coronavirus Disease 2019 Sequelae

    Article • Clinical Infectious Diseases, September 2022, Oxford University Press (OUP)

    David Walt

  34. A lab-on-a-chip for the concurrent electrochemical detection of SARS-CoV-2 RNA and anti-SARS-CoV-2 antibodies in saliva and plasma

    Article • Nature Biomedical Engineering, August 2022, Springer Science + Business Media

    David Walt

  35. Immunogenicity of a Three-Dose Primary Series of mRNA COVID-19 Vaccines in Patients With Lymphoid Malignancies

    Article • Open Forum Infectious Diseases, August 2022, Oxford University Press (OUP)

    David Walt

  36. Isolating high-purity extracellular vesicles from human biofluids for proteome analysis

    Article • Molecular & Cellular Proteomics, August 2022, Elsevier

    David Walt

  37. New Views of Old Proteins: Clarifying the Enigmatic Proteome

    Article • Molecular & Cellular Proteomics, July 2022, Elsevier

    David Walt, Dr Alexandra Naba

  38. Systematic Approach to Address Early Pandemic's Diagnostic Unmet Needs

    Article • Frontiers in Microbiology, June 2022, Frontiers

    David Walt

  39. Persistent circulating SARS-CoV-2 spike is associated with post-acute COVID-19 sequelae

    Article • June 2022, Cold Spring Harbor Laboratory Press

    David Walt

  40. Single-molecule studies reveal method for tuning the heterogeneous activity of alkaline phosphatase

    Article • Biophysical Journal, June 2022, Elsevier

    David Walt

  41. Harmonization of Multiple SARS-CoV-2 Reference Materials Using the WHO IS (NIBSC 20/136): Results and Implications

    Article • Frontiers in Microbiology, May 2022, Frontiers

    David Walt

  42. A human ectopic-lymphoid-follicle-on-a-chip for testing vaccines and adjuvants

    Article • The Journal of Immunology, May 2022, The American Association of Immunologists

    David Walt

  43. Reverse Transcriptase Inhibition Disrupts Repeat Element Life Cycle in Colorectal Cancer

    Article • Cancer Discovery, March 2022, American Association for Cancer Research (AACR)

    David Walt

  44. Ectopic Lymphoid Follicle Formation and Human Seasonal Influenza Vaccination Responses Recapitulated in an Organ‐on‐a‐Chip

    Article • Advanced Science, March 2022, Wiley

    David Walt

  45. Severe Acute Respiratory Syndrome Coronavirus 2 Antigens as Targets of Antibody Responses

    Article • Clinics in Laboratory Medicine, March 2022, Elsevier

    David Walt

  46. Performance of three rapid antigen tests against the SARS-CoV-2 Omicron variant

    Article • February 2022, Cold Spring Harbor Laboratory Press

    David Walt

  47. High-Throughput, High-Multiplex Digital Protein Detection with Attomolar Sensitivity

    Article • ACS Nano, January 2022, American Chemical Society (ACS)

    David Walt

  48. Analytic sensitivity of the Abbott BinaxNOW™ lateral flow immunochromatographic assay for the SARS-CoV-2 Omicron variant

    Article • January 2022, Cold Spring Harbor Laboratory Press

    David Walt

  49. Donor Clonal Hematopoiesis and Recipient Outcomes After Transplantation

    Article • Journal of Clinical Oncology, January 2022, American Society of Clinical Oncology (ASCO)

    David Walt

  50. Framework for rapid comparison of extracellular vesicle isolation methods

    Article • eLife, November 2021, eLife

    David Walt

  51. A SARS‐CoV‐2 Neutralization Assay Using Single Molecule Arrays

    Article • Angewandte Chemie, November 2021, Wiley

    David Walt

  52. Severe Acute Respiratory Syndrome Coronavirus 2 Messenger RNA Vaccines in Allogeneic Hematopoietic Stem Cell Transplant Recipients: Immunogenicity and Reactogenicity

    Article • Clinical Infectious Diseases, November 2021, Oxford University Press (OUP)

    David Walt

  53. Evaluation of phytoconstituent and wound-healing potential of methanolic waste shell extract of Elaeis guineensis Jacquin in female rats

    Article • Phytomedicine Plus, November 2021, Elsevier

    Stephen Sunday Emmanuel, David Walt

  54. Author response: Framework for rapid comparison of extracellular vesicle isolation methods

    Article • October 2021, eLife

    David Walt

  55. An assessment of a rapid SARS-CoV-2 antigen test in Bangladesh

    Article • October 2021, Cold Spring Harbor Laboratory Press

    David Walt

  56. A Modular Biomaterial Scaffold‐Based Vaccine Elicits Durable Adaptive Immunity to Subunit SARS‐CoV‐2 Antigens

    Article • Advanced Healthcare Materials, October 2021, Wiley

    David Walt

  57. The optimization of an ultra-sensitive single molecule assay for the multiplexed detection of SARS-CoV-2 antigens

    Article • American Journal of Clinical Pathology, October 2021, Oxford University Press (OUP)

    David Walt

  58. Donor clonal hematopoiesis and recipient outcomes after transplantation

    Article • September 2021, Cold Spring Harbor Laboratory Press

    David Walt

  59. Single‐Molecule Enzymology for Diagnostics: Profiling Alkaline Phosphatase Activity in Clinical Samples

    Article • ChemBioChem, September 2021, Wiley

    David Walt

  60. Lab-on-a-chip multiplexed electrochemical sensor enables simultaneous detection of SARS-CoV-2 RNA and host antibodies

    Article • September 2021, Cold Spring Harbor Laboratory Press

    David Walt

  61. Protective heterologous T cell immunity in COVID-19 induced by the trivalent MMR and Tdap vaccine antigens

    Article • Med, September 2021, Elsevier

    David Walt

  62. Activity of mRNA COVID-19 vaccines in patients with lymphoid malignancies

    Article • Blood Advances, August 2021, American Society of Hematology

    David Walt

  63. Multisystem inflammatory syndrome in children is driven by zonulin-dependent loss of gut mucosal barrier

    Article • Journal of Clinical Investigation, July 2021, American Society for Clinical Investigation

    David Walt

  64. Correction to: Evaluation of serological lateral flow assays for severe acute respiratory syndrome coronavirus-2

    Article • BMC Infectious Diseases, July 2021, Springer Science + Business Media

    David Walt

  65. Evaluation of Three Commercial and Two Non-Commercial Immunoassays for the Detection of Prior Infection to SARS-CoV-2

    Article • The Journal of Applied Laboratory Medicine, July 2021, Oxford University Press (OUP)

    David Walt

  66. The American lobster genome reveals insights on longevity, neural, and immune adaptations

    Article • Science Advances, June 2021, American Association for the Advancement of Science

    David Walt

  67. Evaluation of serological lateral flow assays for severe acute respiratory syndrome coronavirus-2

    Article • BMC Infectious Diseases, June 2021, Springer Science + Business Media

    David Walt

  68. ASSESSMENT OF PERFORMANCE AND IMPLEMENTATION CHARACTERISTICS OF RAPID POINT OF CARE SARS-CoV-2 ANTIGEN TESTING

    Article • June 2021, Cold Spring Harbor Laboratory Press

    David Walt

  69. L1CAM is not associated with extracellular vesicles in human cerebrospinal fluid or plasma

    Article • Nature Chemical Biology, June 2021, Springer Science + Business Media

    David Walt

  70. Circulating Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Vaccine Antigen Detected in the Plasma of mRNA-1273 Vaccine Recipients

    Article • Clinical Infectious Diseases, May 2021, Oxford University Press (OUP)

    David Walt

  71. Protective heterologous T cell immunity in COVID-19 induced by MMR and Tdap vaccine antigens

    Article • May 2021, Cold Spring Harbor Laboratory Press

    David Walt

  72. Ultrasensitive Measurement of Both SARS-CoV-2 RNA and Antibodies from Saliva

    Article • Analytical Chemistry, March 2021, American Chemical Society (ACS)

    David Walt

  73. Single-Molecule Dwell-Time Analysis of Restriction Endonuclease-Mediated DNA Cleavage

    Article • Journal of Visualized Experiments, February 2021, MyJove Corporation

    David Walt

  74. Ultrasensitive measurement of both SARS-CoV2 RNA and serology from saliva

    Article • January 2021, Cold Spring Harbor Laboratory Press

    David Walt

  75. High-Sensitivity Single Molecule Array Assays for Pathological Isoforms in Parkinson’s Disease

    Article • Clinical Chemistry, January 2021, Oxford University Press (OUP)

    David Walt

  76. Evaluation of serological lateral flow assays for severe acute respiratory syndrome coronavirus-2

    Article • January 2021, Cold Spring Harbor Laboratory Press

    David Walt

  77. Protective Heterologous T Cell Immunity in COVID-19 Induced by MMR and Tdap Vaccine Antigens

    Article • SSRN Electronic Journal, January 2021, Elsevier

    David Walt

  78. Ultra-Sensitive Serial Profiling of SARS-CoV-2 Antigens and Antibodies in Plasma to Understand Disease Progression in COVID-19 Patients with Severe Disease

    Article • Clinical Chemistry, November 2020, Oxford University Press (OUP)

    David Walt

  79. Systems Biology Methods Applied to Blood and Tissue for a Comprehensive Analysis of Immune Response to Hepatitis B Vaccine in Adults

    Article • Frontiers in Immunology, November 2020, Frontiers

    David Walt

  80. Framework for Rapid Comparison of Extracellular Vesicle Isolation Methods

    Article • October 2020, Cold Spring Harbor Laboratory Press

    David Walt

  81. Plasma IL-6 changes correlate to PD-1 inhibitor responses in NSCLC

    Article • Journal for ImmunoTherapy of Cancer, October 2020, BMJ

    David Walt

  82. Simplified Digital Enzyme-Linked Immunosorbent Assay Using Tyramide Signal Amplification and Fibrin Hydrogels

    Article • ACS Sensors, September 2020, American Chemical Society (ACS)

    David Walt

  83. Ultrasensitive high-resolution profiling of early seroconversion in patients with COVID-19

    Article • Nature Biomedical Engineering, September 2020, Springer Science + Business Media

    David Walt

  84. Sequential Protein Capture in Multiplex Single Molecule Arrays: A Strategy for Eliminating Assay Cross‐Reactivity

    Article • Advanced Healthcare Materials, September 2020, Wiley

    David Walt

  85. Ultrasensitive Detection of Enzymatic Activity Using Single Molecule Arrays

    Article • Journal of the American Chemical Society, August 2020, American Chemical Society (ACS)

    David Walt

  86. Single‐Molecule Analysis Determines Isozymes of Human Alkaline Phosphatase in Serum

    Article • Angewandte Chemie, August 2020, Wiley

    David Walt

  87. Single‐Molecule Analysis Determines Isozymes of Human Alkaline Phosphatase in Serum

    Article • Angewandte Chemie, August 2020, Wiley

    David Walt

  88. L1CAM is not Associated with Extracellular Vesicles in Human Cerebrospinal Fluid or Plasma

    Article • August 2020, Cold Spring Harbor Laboratory Press

    David Walt

  89. Serial Profiling of SARS-CoV-2 Antigens and Antibodies in COVID-19 Patient Plasma

    Article • July 2020, Cold Spring Harbor Laboratory Press

    David Walt

  90. Ultrasensitive Detection of Attomolar Protein Concentrations by Dropcast Single Molecule Assays

    Article • Journal of the American Chemical Society, June 2020, American Chemical Society (ACS)

    David Walt

  91. Diagnostic technology for COVID-19: comparative evaluation of antigen and serology-based SARS-CoV-2 immunoassays, and contact tracing solutions for potential use as at-home products

    Article • June 2020, Cold Spring Harbor Laboratory Press

    David Walt

  92. Single Molecule Protein Detection with Attomolar Sensitivity Using Droplet Digital Enzyme-Linked Immunosorbent Assay

    Article • ACS Nano, June 2020, American Chemical Society (ACS)

    David Walt

  93. Evaluation of two commercial and two non-commercial immunoassays for the detection of prior infection to SARS-CoV-2

    Article • June 2020, Cold Spring Harbor Laboratory Press

    David Walt

  94. Ultra-Sensitive High-Resolution Profiling of Anti-SARS-CoV-2 Antibodies for Detecting Early Seroconversion in COVID-19 Patients

    Article • May 2020, Cold Spring Harbor Laboratory Press

    David Walt

  95. Hypothermic Ex Situ Perfusion of Human Limbs With Acellular Solution for 24 Hours

    Article • Transplantation, March 2020, Wolters Kluwer Health

    David Walt

  96. Can mHealth Technology Help Mitigate the Effects of the COVID-19 Pandemic?

    Article • IEEE Open Journal of Engineering in Medicine and Biology, January 2020, Institute of Electrical & Electronics Engineers (IEEE)

    David Walt

  97. Simultaneous detection of small molecules, proteins and microRNAs using single molecule arrays

    Article • Chemical Science, January 2020, Royal Society of Chemistry

    David Walt

  98. Single-molecule measurements in microwells for clinical applications

    Article • Critical Reviews in Clinical Laboratory Sciences, December 2019, Taylor & Francis

    David Walt

  99. Accumulation mechanism of indigo and indirubin in Polygonum tinctorium revealed by metabolite and transcriptome analysis

    Article • Industrial Crops and Products, December 2019, Elsevier

    David Walt

  100. A rapid triage test for active pulmonary tuberculosis in adult patients with persistent cough

    Article • Science Translational Medicine, October 2019, American Association for the Advancement of Science

    Dr Saurabh Mehta, David Walt

  101. Lymphoid follicle formation and human vaccination responses recapitulated in an organ-on-a-chip

    Article • October 2019, Cold Spring Harbor Laboratory Press

    David Walt

  102. Single-Molecule Mechanistic Study of Enzyme Hysteresis

    Article • ACS Central Science, September 2019, American Chemical Society (ACS)

    David Walt

  103. Single-Molecule Arrays for Ultrasensitive Detection of Blood-Based Biomarkers for Immunotherapy

    Article • September 2019, Springer Science + Business Media

    David Walt

  104. Clinical testing should be individualized, not based on populations

    Article • Journal of Clinical Investigation, August 2019, American Society for Clinical Investigation

    David Walt

  105. Impact of clinical sample handling and processing on ultra-low level measurements of plasma cytokines

    Article • Clinical Biochemistry, March 2019, Elsevier

    David Walt

  106. Detection of amyloid β oligomers toward early diagnosis of Alzheimer's disease

    Article • Analytical Biochemistry, February 2019, Elsevier

    David Walt

  107. Protein Detection by Counting Molecules

    Article • Clinical Chemistry, January 2019, AACC

    David Walt

  108. Competitive Immunoassays for the Detection of Small Molecules Using Single Molecule Arrays

    Article • Journal of the American Chemical Society, November 2018, American Chemical Society (ACS)

    David Walt

  109. Evaluation of Antibody Biotinylation Approaches for Enhanced Sensitivity of Single Molecule Array (Simoa) Immunoassays

    Article • Bioconjugate Chemistry, October 2018, American Chemical Society (ACS)

    David Walt

  110. Highly Sensitive and Multiplexed Protein Measurements

    Article • Chemical Reviews, August 2018, American Chemical Society (ACS)

    David Walt

  111. Finding useful biomarkers for Parkinson’s disease

    Article • Science Translational Medicine, August 2018, American Association for the Advancement of Science

    David Walt

  112. Bottom-up single-molecule strategy for understanding subunit function of tetrameric β-galactosidase

    Article • Proceedings of the National Academy of Sciences, July 2018, Proceedings of the National Academy of Sciences

    David Walt

  113. How many human proteoforms are there?

    Article • Nature Chemical Biology, February 2018, Springer Science + Business Media

    David Walt

  114. Ultrasensitive Single-Molecule Enzyme Detection and Analysis Using a Polymer Microarray

    Article • Analytical Chemistry, February 2018, American Chemical Society (ACS)

    David Walt

  115. 48 Single Molecule Array Ultra-Sensitive Cytokine Assays in EDTA Plasma Are Robust and Clinically Feasible

    Article • American Journal of Clinical Pathology, January 2018, Oxford University Press (OUP)

    David Walt

  116. Single Molecule Arrays for ultra-sensitive detection of rat cytokines in serum

    Article • Journal of Immunological Methods, January 2018, Elsevier

    David Walt

  117. Development of a Rapid Salivary Proteomic Platform for Oral Feeding Readiness in the Preterm Newborn

    Article • Frontiers in Pediatrics, December 2017, Frontiers

    David Walt

  118. Long-Term Measurements of Human Inflammatory Cytokines Reveal Complex Baseline Variations between Individuals

    Article • American Journal Of Pathology, December 2017, Elsevier

    David Walt

  119. Digital direct detection of microRNAs using single molecule arrays

    Article • Nucleic Acids Research, June 2017, Oxford University Press (OUP)

    David Walt

  120. Single-Molecule Arrays for Protein and Nucleic Acid Analysis

    Article • Annual Review of Analytical Chemistry, June 2017, Annual Reviews

    David Walt

  121. Using Next-Generation Sequencing to Explore Genetics and Race in the High School Classroom

    Article • CBE—Life Sciences Education, June 2017, American Society for Cell Biology (ASCB)

    David Walt

  122. Parkinson’s Disease Biomarkers: Perspective from the NINDS Parkinson’s Disease Biomarkers Program

    Article • Biomarkers in Medicine, May 2017, Taylor & Francis

    David Walt

  123. Highly localized divergence within supergenes in Atlantic cod (Gadus morhua) within the Gulf of Maine

    Article • BMC Genomics, March 2017, Springer Science + Business Media

    David Walt

  124. Optically-based Molecularly Imprinted Polymers Sensors

    Article • January 2017, Optical Society of America (OSA)

    David Walt

  125. Personal microbiomes and next-generation sequencing for laboratory-based education

    Article • FEMS Microbiology Letters, November 2016, Oxford University Press (OUP)

    David Walt

  126. Using Antigen–antibody Binding Kinetic Parameters to Understand Single-Molecule Array Immunoassay Performance

    Article • Analytical Chemistry, November 2016, American Chemical Society (ACS)

    David Walt

  127. Rapid and ultrasensitive detection of botulinum neurotoxin serotype A1 in human serum and urine using single-molecule array method

    Article • Forensic Toxicology, September 2016, Springer Science + Business Media

    David Walt

  128. Incorporation of Slow Off-Rate Modified Aptamers Reagents in Single Molecule Array Assays for Cytokine Detection with Ultrahigh Sensitivity

    Article • Analytical Chemistry, August 2016, American Chemical Society (ACS)

    David Walt

  129. Protein Counting in Single Cancer Cells

    Article • Analytical Chemistry, February 2016, American Chemical Society (ACS)

    David Walt

  130. Training the next generation of biomedical investigators in glycosciences

    Article • Journal of Clinical Investigation, February 2016, American Society for Clinical Investigation

    David Walt

  131. Enzyme Kinetics in Femtoliter Arrays

    Article • January 2016, Elsevier

    David Walt

  132. Correlations of Salivary Biomarkers with Clinical Assessments in Patients with Cystic Fibrosis

    Article • PLOS One, August 2015, PLOS

    David Walt

  133. The Scope of Analytical Chemistry

    Article • Analytical Chemistry, June 2015, American Chemical Society (ACS)

    David Walt

  134. Ultrasensitive Detection of Ricin Toxin in Multiple Sample Matrixes Using Single-Domain Antibodies

    Article • Analytical Chemistry, June 2015, American Chemical Society (ACS)

    David Walt

  135. Ultra-sensitive protein detection via Single Molecule Arrays towards early stage cancer monitoring

    Article • Scientific Reports, June 2015, Springer Science + Business Media

    David Walt

  136. Salivary Diagnostics Using a Portable Point-of-Service Platform: A Review

    Article • Clinical Therapeutics, March 2015, Elsevier

    David Walt

  137. Single-Molecule Arrays for Ultrasensitive Detection of Host Immune Response to Dengue Virus Infection

    Article • Journal of Clinical Microbiology, February 2015, ASM Journals

    David Walt

  138. Stoichiometry of the α-Complementation Reaction of Escherichia coli β-Galactosidase As Revealed through Single-Molecule Studies

    Article • Biochemistry, February 2015, American Chemical Society (ACS)

    David Walt

  139. Catalytic kinetics of single gold nanoparticles observed via optical microwell arrays

    Article • Nanotechnology, January 2015, Institute of Physics Publishing

    David Walt

  140. Fiber-optic array using molecularly imprinted microspheres for antibiotic analysis

    Article • Chemical Science, January 2015, Royal Society of Chemistry

    Dr Elena Benito Peña, Professor Maria C Moreno-Bondi, David Walt

  141. Single molecule array (Simoa) assay with optimal antibody pairs for cytokine detection in human serum samples

    Article • The Analyst, January 2015, Royal Society of Chemistry

    David Walt

  142. Genome-Wide SNP-Genotyping Array to Study the Evolution of the Human Pathogen Vibrio vulnificus Biotype 3

    Article • PLOS One, December 2014, PLOS

    David Walt

  143. Advancing the speed, sensitivity and accuracy of biomolecular detection using multi-length-scale engineering

    Article • Nature Nanotechnology, December 2014, Springer Science + Business Media

    David Walt

  144. Disease Detection by Ultrasensitive Quantification of Microdosed Synthetic Urinary Biomarkers

    Article • Journal of the American Chemical Society, September 2014, American Chemical Society (ACS)

    David Walt

  145. Observing Single Enzyme Molecules Interconvert between Activity States upon Heating

    Article • PLOS One, January 2014, PLOS

    David Walt

  146. Salivary Inflammatory Mediator Profiling and Correlation to Clinical Disease Markers in Asthma

    Article • PLOS One, January 2014, PLOS

    David Walt

  147. An automated integrated platform for rapid and sensitive multiplexed protein profiling using human saliva samples

    Article • Lab on a Chip, January 2014, Royal Society of Chemistry

    David Walt

  148. Protein measurements in microwells

    Article • Lab on a Chip, January 2014, Royal Society of Chemistry

    David Walt

  149. Elucidating the relationship between substrate and inhibitor binding to the active sites of tetrameric β-galactosidase

    Article • Chemical Science, January 2014, Royal Society of Chemistry

    David Walt

  150. Elucidating Restriction Endonucleases Reaction Mechanisms via Dwell-Time Distribution Analysis

    Article • Biophysical Journal, January 2014, Elsevier

    David Walt

  151. Multiplexed Fluorescent Microarray for Human Salivary Protein Analysis Using Polymer Microspheres and Fiber-optic Bundles

    Article • Journal of Visualized Experiments, October 2013, MyJove Corporation

    David Walt

  152. Multiplexed Salivary Protein Profiling for Patients with Respiratory Diseases Using Fiber-Optic Bundles and Fluorescent Antibody-Based Microarrays

    Article • Analytical Chemistry, September 2013, American Chemical Society (ACS)

    David Walt

  153. Measuring Atomic Emission from Beacons for Long-Distance Chemical Signaling

    Article • Analytical Chemistry, September 2013, American Chemical Society (ACS)

    David Walt

  154. Assessing the Stochastic Intermittency of Single Quantum Dot Luminescence for Robust Quantification of Biomolecules

    Article • Analytical Chemistry, May 2013, American Chemical Society (ACS)

    David Walt

  155. Direct Detection of Bacterial Genomic DNA at Sub-Femtomolar Concentrations Using Single Molecule Arrays

    Article • Analytical Chemistry, January 2013, American Chemical Society (ACS)

    David Walt

  156. Dynamic microbead arrays for biosensing applications

    Article • Lab on a Chip, January 2013, Royal Society of Chemistry

    David Walt

  157. Optical Methods for Single Molecule Detection and Analysis

    Article • Analytical Chemistry, December 2012, American Chemical Society (ACS)

    David Walt

  158. Serum levels of BMP‐2, 4, 7 and AHSG in patients with degenerative joint disease requiring total arthroplasty of the hip and temporomandibular joints

    Article • Journal of Orthopaedic Research®, July 2012, Wiley

    David Walt

  159. Oil-sealed femtoliter fiber-optic arrays for single molecule analysis

    Article • Lab on a Chip, January 2012, Royal Society of Chemistry

    David Walt

  160. Single-Molecule Studies of Restriction Endonuclease Kinetics

    Article • Biophysical Journal, January 2012, Elsevier

    David Walt

  161. Competencies: A Cure for Pre-Med Curriculum

    Article • Science, November 2011, American Association for the Advancement of Science

    David Walt

  162. Robust error correction in infofuses

    Article • Proceedings of the Royal Society A Mathematical Physical and Engineering Sciences, September 2011, Royal Society Publishing

    David Walt

  163. InfoBiology by printed arrays of microorganism colonies for timed and on-demand release of messages

    Article • Proceedings of the National Academy of Sciences, September 2011, Proceedings of the National Academy of Sciences

    David Walt

  164. Whole-saliva Proteolysis and Its Impact on Salivary Diagnostics

    Article • Journal of Dental Research, September 2011, SAGE Publications

    David Walt

  165. Artificial Noses

    Article • Annual Review of Biomedical Engineering, August 2011, Annual Reviews

    David Walt

  166. Single Cell Time-resolved Quorum Responses Reveal Dependence on Cell Density and Configuration

    Article • Journal of Biological Chemistry, June 2011, Elsevier

    David Walt

  167. Salivary Inflammatory Mediator Profiling and Correlation to Clinical Disease Markers in Pediatric Atopic Asthma

    Article • Journal of Allergy and Clinical Immunology, February 2011, Elsevier

    David Walt

  168. Dynamic Biomolecule Sensing Bead Array Held by Optical Tweezers

    Article • January 2011, Optical Society of America (OSA)

    David Walt

  169. Lessons learned from the introduction of personalized genotyping into a medical school curriculum

    Article • Genetics in Medicine, January 2011, Elsevier

    David Walt

  170. Bead-based optical fiber arrays for artificial olfaction

    Article • Current Opinion in Chemical Biology, December 2010, Elsevier

    David Walt

  171. Visualizing Fluorescence: Using a Homemade Fluorescence “Microscope” To View Latent Fingerprints on Paper

    Article • Journal of Chemical Education, July 2010, American Chemical Society (ACS)

    David Walt

  172. Single-molecule enzyme-linked immunosorbent assay detects serum proteins at subfemtomolar concentrations

    Article • Nature Biotechnology, May 2010, Springer Science + Business Media

    David Walt

  173. Analytical Chemistry on the Femtoliter Scale

    Article • Angewandte Chemie, May 2010, Wiley

    David Walt

  174. Synthesis and Biological Testing of Penicillins: An Investigative Approach to the Undergraduate Teaching Laboratory

    Article • Journal of Chemical Education, March 2010, American Chemical Society (ACS)

    David Walt

  175. Note: Toward multiple addressable optical trapping

    Article • Review of Scientific Instruments, February 2010, American Institute of Physics

    David Walt

  176. Fibre optic microarrays

    Article • Chemical Society Reviews, January 2010, Royal Society of Chemistry

    David Walt

  177. Detection and Classification of Ignitable Liquid Residues Using a Fluorescence‐Based Vapor‐Sensitive Microsphere Array*

    Article • Journal of Forensic Sciences, January 2010, Wiley

    David Walt

  178. Optical-fiber arrays for vapor sensing

    Article • Sensors and Actuators B Chemical, November 2009, Elsevier

    David Walt

  179. Ubiquitous Sensors: When Will They Be Here?

    Article • ACS Nano, October 2009, American Chemical Society (ACS)

    David Walt

  180. Intelligent Medical Diagnostics via Molecular Logic

    Article • Journal of the American Chemical Society, August 2009, American Chemical Society (ACS)

    David Walt

  181. Chromatically Resolved Optical Microscope (CROMoscope): A Grating-Based Instrument for Spectral Imaging

    Article • Analytical Chemistry, August 2009, American Chemical Society (ACS)

    David Walt

  182. Microsphere-Based Rolling Circle Amplification Microarray for the Detection of DNA and Proteins in a Single Assay

    Article • Analytical Chemistry, June 2009, American Chemical Society (ACS)

    David Walt

  183. Temporally Resolved Fluorescence Spectroscopy of a Microarray-Based Vapor Sensing System

    Article • Analytical Chemistry, June 2009, American Chemical Society (ACS)

    David Walt

  184. Design, Implementation, and Field Testing of a Portable Fluorescence-Based Vapor Sensor

    Article • Analytical Chemistry, June 2009, American Chemical Society (ACS)

    David Walt

  185. Infochemistry and infofuses for the chemical storage and transmission of coded information

    Article • Proceedings of the National Academy of Sciences, June 2009, Proceedings of the National Academy of Sciences

    David Walt

  186. CMOS Microelectrode Array for Electrochemical Lab-on-a-Chip Applications

    Article • IEEE Sensors Journal, June 2009, Institute of Electrical & Electronics Engineers (IEEE)

    David Walt

  187. Multiplexed Sandwich Immunoassays Using Electrochemiluminescence Imaging Resolved at the Single Bead Level

    Article • Journal of the American Chemical Society, April 2009, American Chemical Society (ACS)

    David Walt

  188. DNA detection on ultrahigh-density optical fiber-based nanoarrays

    Article • Biosensors and Bioelectronics, April 2009, Elsevier

    David Walt

  189. Mechanistic Aspects of Horseradish Peroxidase Elucidated through Single-Molecule Studies

    Article • Journal of the American Chemical Society, April 2009, American Chemical Society (ACS)

    David Walt

  190. Fiber-Optic Microsphere-Based Antibody Array for the Analysis of Inflammatory Cytokines in Saliva

    Article • Analytical Chemistry, February 2009, American Chemical Society (ACS)

    David Walt

  191. Salivary Analyte Profiles and Asthma Severity

    Article • Journal of Allergy and Clinical Immunology, February 2009, Elsevier

    David Walt

  192. Measurement science: the engine of chemical biology

    Article • Current Opinion in Chemical Biology, October 2008, Elsevier

    David Walt

  193. Detection of Single-Molecule DNA Hybridization Using Enzymatic Amplification in an Array of Femtoliter-Sized Reaction Vessels

    Article • Journal of the American Chemical Society, September 2008, American Chemical Society (ACS)

    David Walt

  194. Use of Colorimetric Test Strips for Monitoring the Effect of Hemodialysis on Salivary Nitrite and Uric Acid in Patients with End-Stage Renal Disease: A Proof of Principle

    Article • Clinical Chemistry, September 2008, Oxford University Press (OUP)

    David Walt

  195. Multiplexed Spectroscopic Detections

    Article • Annual Review of Analytical Chemistry, July 2008, Annual Reviews

    David Walt

  196. Distinct and Long-Lived Activity States of Single Enzyme Molecules

    Article • Journal of the American Chemical Society, March 2008, American Chemical Society (ACS)

    David Walt

  197. Salivary Cytokine amd Pathogen Detection in Patients with Asthma

    Article • Journal of Allergy and Clinical Immunology, February 2008, Elsevier

    David Walt

  198. Very High Density Sensing Arrays

    Article • Chemical Reviews, January 2008, American Chemical Society (ACS)

    David Walt

  199. OPTRODE-BASED FIBER OPTIC BIOSENSORS (BIO-OPTRODE)

    Article • January 2008, Elsevier

    David Walt

  200. Stochastic inhibitor release and binding from single-enzyme molecules

    Article • Proceedings of the National Academy of Sciences, November 2007, Proceedings of the National Academy of Sciences

    David Walt

  201. Multianalyte Single-Cell Analysis with Multiple Cell Lines Using a Fiber-Optic Array

    Article • Analytical Chemistry, November 2007, American Chemical Society (ACS)

    David Walt

  202. Optical‐fiber bundles

    Article • European Journal of Biochemistry, October 2007, Wiley

    David Walt

  203. Smells like bread

    Article • Nature Chemical Biology, June 2007, Springer Science + Business Media

    David Walt

  204. Microsensor Arrays for Saliva Diagnostics

    Article • Annals of the New York Academy of Sciences, March 2007, Wiley

    David Walt

  205. Fiber-based single cell analysis of reporter gene expression in yeast two-hybrid systems

    Article • Analytical Biochemistry, January 2007, Elsevier

    David Walt

  206. Phenotypic Consequences of Promoter-Mediated Transcriptional Noise

    Article • Molecular Cell, December 2006, Elsevier

    Gabor Balazsi, David Walt

  207. Parallel microparticle manipulation using an imaging fiber-bundle-based optical tweezer array and a digital micromirror device

    Article • Applied Physics Letters, November 2006, American Institute of Physics

    David Walt

  208. Fiber Optic Array Biosensors

    Article • BioTechniques, November 2006, Future Science

    David Walt

  209. Detection of inflammatory cytokines using a fiber optic microsphere immunoassay array

    Article • October 2006, SPIE

    David Walt

  210. Fiber-Optic Microarray for Simultaneous Detection of Multiple Harmful Algal Bloom Species

    Article • Applied and Environmental Microbiology, September 2006, ASM Journals

    David Walt

  211. Fibre optic microarrays for the detection and enumeration of harmful algal bloom species

    Article • African Journal of Marine Science, September 2006, Informa UK Limited

    David Walt

  212. Detecting oxygen consumption in the proximity of Saccharomyces cerevisiae cells using self‐assembled fluorescent nanosensors

    Article • Biotechnology and Bioengineering, July 2006, Wiley

    David Walt

  213. Digital Readout of Target Binding with Attomole Detection Limits via Enzyme Amplification in Femtoliter Arrays

    Article • Journal of the American Chemical Society, April 2006, American Chemical Society (ACS)

    David Walt

  214. Microbead Chemical Switches:  An Approach to Detection of Reactive Organophosphate Chemical Warfare Agent Vapors

    Article • Journal of the American Chemical Society, March 2006, American Chemical Society (ACS)

    David Walt

  215. Duplexed sandwich immunoassays on a fiber-optic microarray

    Article • Analytica Chimica Acta, March 2006, Elsevier

    David Walt

  216. Digital Concentration Readout of Single Enzyme Molecules Using Femtoliter Arrays and Poisson Statistics

    Article • Nano Letters, February 2006, American Chemical Society (ACS)

    David Walt

  217. Fiber-Optic Microsphere-Based Arrays for Multiplexed Biological Warfare Agent Detection

    Article • Analytical Chemistry, January 2006, American Chemical Society (ACS)

    David Walt

  218. Biosensing

    Article • January 2006, Springer Science + Business Media

    David Walt

  219. Detection of biological warfare agents with fiber-optic microsphere-based DNA arrays

    Article • November 2005, SPIE

    David Walt

  220. Microsphere based saliva diagnostics

    Article • November 2005, SPIE

    David Walt

  221. Detecting Biological Warfare Agents

    Article • Emerging Infectious Diseases, October 2005, Centers for Disease Control and Prevention (CDC)

    David Walt

  222. Monitoring “promiscuous” drug effects on single cells of multiple cell types

    Article • Analytical Biochemistry, October 2005, Elsevier

    David Walt

  223. Optical fiber-based sensors: application to chemical biology

    Article • Current Opinion in Chemical Biology, October 2005, Elsevier

    David Walt

  224. Fabrication and optical characterization of imaging fiber-based nanoarrays

    Article • Talanta, September 2005, Elsevier

    David Walt

  225. Extending the Longevity of Fluorescence-Based Sensor Arrays Using Adaptive Exposure

    Article • Analytical Chemistry, August 2005, American Chemical Society (ACS)

    David Walt

  226. Development of a Microfluidic Platform with an Optical Imaging Microarray Capable of Attomolar Target DNA Detection

    Article • Analytical Chemistry, August 2005, American Chemical Society (ACS)

    David Walt

  227. Synthesis of gold–poly(methyl methacrylate) core–shell nanoparticles by surface‐confined atom transfer radical polymerization at elevated temperature

    Article • Journal of Polymer Science Part A Polymer Chemistry, July 2005, Wiley

    David Walt

  228. Personalized Exposure Assessment: Promising Approaches for Human Environmental Health Research

    Article • Environmental Health Perspectives, July 2005, Environmental Health Perspectives

    David Walt

  229. Detection of Salmonella spp. Using Microsphere-Based, Fiber-Optic DNA Microarrays

    Article • Analytical Chemistry, June 2005, American Chemical Society (ACS)

    David Walt

  230. Miniature Analytical Methods for Medical Diagnostics

    Article • Science, April 2005, American Association for the Advancement of Science

    David Walt

  231. Individual cell migration analysis using fiber-optic bundles

    Article • Analytical and Bioanalytical Chemistry, April 2005, Springer Science + Business Media

    David Walt

  232. Electronic Noses: Wake Up and Smell the Coffee.

    Article • Analytical Chemistry, February 2005, American Chemical Society (ACS)

    David Walt

  233. Progress toward the determination of Sr2+ in highly basic solutions using imaging optical fiber sensor arrays

    Article • Journal of Materials Chemistry, January 2005, Royal Society of Chemistry

    David Walt

  234. Array-Based Binary Analysis for Bacterial Typing

    Article • Analytical Chemistry, December 2004, American Chemical Society (ACS)

    David Walt

  235. Simultaneously Monitoring Gene Expression Kinetics and Genetic Noise in Single Cells by Optical Well Arrays

    Article • Analytical Chemistry, September 2004, American Chemical Society (ACS)

    David Walt

  236. Fabrication of Gold Microtubes and Microwires in High Aspect Ratio Capillary Arrays

    Article • Journal of the American Chemical Society, August 2004, American Chemical Society (ACS)

    David Walt

  237. Optical fiber-based biosensors

    Article • Analytical and Bioanalytical Chemistry, June 2004, Springer Science + Business Media

    David Walt

  238. An imaging fiber-based optical tweezer array for microparticle array assembly

    Article • Applied Physics Letters, May 2004, American Institute of Physics

    David Walt

  239. Living Bacterial Cell Array for Genotoxin Monitoring

    Article • Analytical Chemistry, April 2004, American Chemical Society (ACS)

    David Walt

  240. Increasing lifetimes of fiber-optic sensor arrays for chemical warfare detection

    Article • March 2004, SPIE

    David Walt

  241. Microsphere-based DNA biosensor arrays

    Article • March 2004, SPIE

    David Walt

  242. Reversible Ratiometric Probe for Quantitative DNA Measurements

    Article • Analytical Chemistry, January 2004, American Chemical Society (ACS)

    David Walt

  243. Encoded Fiber‐Optic Microsphere Arrays for Probing Protein–Carbohydrate Interactions

    Article • Angewandte Chemie, November 2003, Wiley

    David Walt

  244. Combinatorial Decoding:  An Approach for Universal DNA Array Fabrication

    Article • Journal of the American Chemical Society, October 2003, American Chemical Society (ACS)

    David Walt

  245. Spatially Resolved Electrochemiluminescence on an Array of Electrode Tips

    Article • Analytical Chemistry, July 2003, American Chemical Society (ACS)

    David Walt

  246. Information Coding in Artificial Olfaction Multisensor Arrays

    Article • Analytical Chemistry, July 2003, American Chemical Society (ACS)

    David Walt

  247. High-density, microsphere-based fiber optic DNA microarrays

    Article • Biosensors and Bioelectronics, May 2003, Elsevier

    David Walt

  248. Optical imaging fiber-based live bacterial cell array biosensor

    Article • Analytical Biochemistry, April 2003, Elsevier

    David Walt

  249. Enhancing Vapor Sensor Discrimination by Mimicking a Canine Nasal Cavity Flow Environment

    Article • Journal of the American Chemical Society, March 2003, American Chemical Society (ACS)

    David Walt

  250. The Use of Optical Fiber Bundles Combined with Electrochemistry for Chemical Imaging

    Article • ChemPhysChem, February 2003, Wiley

    David Walt

  251. Fluorescence-based fibre optic arrays: a universal platform for sensing

    Article • Chemical Society Reviews, January 2003, Royal Society of Chemistry

    David Walt

  252. Combined imaging and chemical sensing of l-glutamate release from the foregut plexus of the Lepidopteran, Manduca sexta

    Article • Journal of Neuroscience Methods, October 2002, Elsevier

    David Walt

  253. Imaging optical sensor arrays

    Article • Current Opinion in Chemical Biology, October 2002, Elsevier

    David Walt

  254. Fluorescence-based nucleic acid detection and microarrays

    Article • Analytica Chimica Acta, September 2002, Elsevier

    David Walt

  255. Top-to-bottom functional design

    Article • Nature Materials, September 2002, Springer Science + Business Media

    David Walt

  256. Automatic decoding of sensor types within randomly ordered, high-density optical sensor arrays

    Article • Analytical and Bioanalytical Chemistry, August 2002, Springer Science + Business Media

    David Walt

  257. Cross-Reactive Optical Sensing Arrays

    Article • July 2002, American Chemical Society (ACS)

    David Walt

  258. Optical Imaging Fiber-Based Single Live Cell Arrays:  A High-Density Cell Assay Platform

    Article • Analytical Chemistry, May 2002, American Chemical Society (ACS)

    David Walt

  259. Randomly-Ordered High-Density Fiber Optic Microsensor Array Sensors

    Article • March 2002, American Chemical Society (ACS)

    David Walt

  260. High-Density Fiber-Optic Genosensor Microsphere Array Capable of Zeptomole Detection Limits

    Article • Analytical Chemistry, March 2002, American Chemical Society (ACS)

    David Walt

  261. Fabrication of an Optoelectrochemical Microring Array

    Article • Analytical Chemistry, February 2002, American Chemical Society (ACS)

    David Walt

  262. <title>Artificial nose employing microsphere sensors for detection of volatile organic compounds</title>

    Article • February 2002, SPIE

    David Walt

  263. <title>Optical imaging fiber-based recombinant bacterial biosensor</title>

    Article • February 2002, SPIE

    David Walt

  264. <title>High-density fiber optic biosensor arrays</title>

    Article • February 2002, SPIE

    David Walt

  265. Aluminum Surface Corrosion and the Mechanism of Inhibitors Using pH and Metal Ion Selective Imaging Fiber Bundles

    Article • Analytical Chemistry, January 2002, American Chemical Society (ACS)

    David Walt

  266. Preparation of Polymer Coated Gold Nanoparticles by Surface-Confined Living Radical Polymerization at Ambient Temperature

    Article • Nano Letters, January 2002, American Chemical Society (ACS)

    David Walt

  267. Array-to-Array Transfer of an Artificial Nose Classifier

    Article • Analytical Chemistry, September 2001, American Chemical Society (ACS)

    David Walt

  268. A Cross-Reactive, Class-Selective Enzymatic Array Assay

    Article • Journal of the American Chemical Society, August 2001, American Chemical Society (ACS)

    David Walt

  269. Stability and Exchange Studies of Alkanethiol Monolayers on Gold-Nanoparticle-Coated Silica Microspheres

    Article • Langmuir, July 2001, American Chemical Society (ACS)

    David Walt

  270. Field-Deployable Sniffer for 2,4-Dinitrotoluene Detection

    Article • Environmental Science & Technology, June 2001, American Chemical Society (ACS)

    David Walt

  271. Interference filter refinement for artificial nose fluorescence sensing

    Article • Optical Engineering, June 2001, SPIE

    David Walt

  272. Nanosphere−Microsphere Assembly:  Methods for Core−Shell Materials Preparation

    Article • Chemistry of Materials, May 2001, American Chemical Society (ACS)

    David Walt

  273. Optical Multibead Arrays for Simple and Complex Odor Discrimination

    Article • Analytical Chemistry, May 2001, American Chemical Society (ACS)

    David Walt

  274. A Duplexed Microsphere-Based Fluorescent Immunoassay

    Article • Analytical Biochemistry, April 2001, Elsevier

    David Walt

  275. A fiber-optic lactate sensor based on bacterial cytoplasmic membranes

    Article • Biosensors and Bioelectronics, January 2001, Elsevier

    David Walt

  276. Peer Reviewed: Biological Warfare Detection

    Article • Analytical Chemistry, December 2000, American Chemical Society (ACS)

    David Walt

  277. Production of Hollow Polymeric Microspheres by Surface-Confined Living Radical Polymerization on Silica Templates

    Article • Chemistry of Materials, November 2000, American Chemical Society (ACS)

    David Walt

  278. High-Density Fiber-Optic DNA Random Microsphere Array

    Article • Analytical Chemistry, October 2000, American Chemical Society (ACS)

    David Walt

  279. A Combinatorial Approach To Discover New Chelators for Optical Metal Ion Sensing

    Article • Analytical Chemistry, September 2000, American Chemical Society (ACS)

    David Walt

  280. Cross-Reactive Chemical Sensor Arrays

    Article • Chemical Reviews, June 2000, American Chemical Society (ACS)

    David Walt

  281. Guest Editorial

    Article • Chemical Reviews, June 2000, American Chemical Society (ACS)

    David Walt

  282. A Fiber-Optic Microarray Biosensor Using Aptamers as Receptors

    Article • Analytical Biochemistry, June 2000, Elsevier

    David Walt

  283. A Novel Monte-Carlo Based Method for Quantitative Thin Film X-Ray Microanalysis

    Article • Microchimica Acta, April 2000, Springer Science + Business Media

    David Walt

  284. High-Speed Fluorescence Detection of Explosives-like Vapors

    Article • Analytical Chemistry, March 2000, American Chemical Society (ACS)

    David Walt

  285. Application of High-Density Optical Microwell Arrays in a Live-Cell Biosensing System

    Article • Analytical Biochemistry, February 2000, Elsevier

    David Walt

  286. Bead-based Fiber-Optic Arrays

    Article • Science, January 2000, American Association for the Advancement of Science

    David Walt

  287. Screening unlabeled DNA targets with randomly ordered fiber-optic gene arrays

    Article • Nature Biotechnology, January 2000, Springer Science + Business Media

    David Walt

  288. Organic vapor detection with fiber optic bead arrays

    Article • December 1999, SPIE

    David Walt

  289. Combined Imaging and Chemical Sensing of Fertilization-Induced Acid Release from Single Sea Urchin Eggs

    Article • Analytical Biochemistry, September 1999, Elsevier

    David Walt

  290. High-speed fluorescence detection of explosives vapor

    Article • August 1999, SPIE

    David Walt

  291. A Far-Field-Viewing Sensor for Making Analytical Measurements in Remote Locations

    Article • Analytical Chemistry, June 1999, American Chemical Society (ACS)

    David Walt

  292. Fluorescent Excitation Transfer Immunoassay for the Determination of Spinosyn A in Water

    Article • Journal of Agricultural and Food Chemistry, May 1999, American Chemical Society (ACS)

    David Walt

  293. Convergent, Self-Encoded Bead Sensor Arrays in the Design of an Artificial Nose

    Article • Analytical Chemistry, May 1999, American Chemical Society (ACS)

    David Walt

  294. An Autonomous Sensor and Telemetry System for Low-Level pCO2 Measurements in Seawater

    Article • Analytical Chemistry, February 1999, American Chemical Society (ACS)

    David Walt

  295. <title>Immunofluorescence detection methods using microspheres</title>

    Article • January 1999, SPIE

    David Walt

  296. An Autonomous Sensor and Telemetry System for Low-Level pCO2 Measurements in Seawater

    Article • Analytical Chemistry, December 1998, American Chemical Society (ACS)

    David Walt

  297. Designing optical sensor arrays with enhanced sensitivity for explosives detection

    Article • September 1998, SPIE

    David Walt

  298. Optical sensor arrays for odor recognition

    Article • Biosensors and Bioelectronics, September 1998, Elsevier

    David Walt

  299. Current trends in `artificial-nose' technology

    Article • Trends in Biotechnology, June 1998, Elsevier

    David Walt

  300. An olfactory neuronal network for vapor recognition in an artificial nose

    Article • Biological Cybernetics, May 1998, Springer Science + Business Media

    David Walt

  301. <title>Making sensors out of disarray: optical sensor microarrays</title>

    Article • May 1998, SPIE

    David Walt

  302. Fiber Optic Imaging Sensors

    Article • Accounts of Chemical Research, May 1998, American Chemical Society (ACS)

    David Walt

  303. The Use of Optical-Imaging Fibers for the Fabrication of Array Sensors

    Article • April 1998, American Chemical Society (ACS)

    David Walt

  304. Randomly Ordered Addressable High-Density Optical Sensor Arrays

    Article • Analytical Chemistry, March 1998, American Chemical Society (ACS)

    David Walt

  305. Identification of Multiple Analytes Using an Optical Sensor Array and Pattern Recognition Neural Networks

    Article • Analytical Chemistry, November 1997, American Chemical Society (ACS)

    David Walt

  306. Oxygen Sensing Properties of a New Ruthenium (II) Compound

    Article • Analytical Letters, October 1997, Taylor & Francis

    David Walt

  307. Fiberoptic DNA Sensor Array Capable of Detecting Point Mutations

    Article • Analytical Biochemistry, September 1997, Elsevier

    David Walt

  308. Generating Sensor Diversity through Combinatorial Polymer Synthesis

    Article • Analytical Chemistry, September 1997, American Chemical Society (ACS)

    David Walt

  309. Fluorescence monitoring of the microenvironmental pH of highly charged polymers

    Article • Journal of Polymer Science Part A Polymer Chemistry, July 1997, Wiley

    David Walt

  310. Fast Temporal Response Fiber-Optic Chemical Sensors Based on the Photodeposition of Micrometer-Scale Polymer Arrays

    Article • Analytical Chemistry, June 1997, American Chemical Society (ACS)

    David Walt

  311. In Situ Fluorescence Imaging of Localized Corrosion with a pH-Sensitive Imaging Fiber

    Article • Analytical Chemistry, April 1997, American Chemical Society (ACS)

    David Walt

  312. Simultaneous monitoring of pH, CO2 and O2 using an optical imaging fiber

    Article • Analytica Chimica Acta, March 1997, Elsevier

    David Walt

  313. Toward a near-field optical array

    Article • Review of Scientific Instruments, March 1997, American Institute of Physics

    David Walt

  314. Multianalyte biosensors on optical imaging bundles

    Article • Biosensors and Bioelectronics, January 1997, Elsevier

    David Walt

  315. A fiber-optic DNA biosensor microarray for the analysis of gene expression

    Article • Nature Biotechnology, December 1996, Springer Science + Business Media

    David Walt

  316. A chemical-detecting system based on a cross-reactive optical sensor array

    Article • Nature, August 1996, Springer Science + Business Media

    David Walt

  317. Rapid Analyte Recognition in a Device Based on Optical Sensors and the Olfactory System

    Article • Analytical Chemistry, July 1996, American Chemical Society (ACS)

    David Walt

  318. Optical arrays and pattern recognition in the design of an artificial nose

    Article • April 1996, SPIE

    David Walt

  319. Ordered Nanowell Arrays

    Article • Chemistry of Materials, January 1996, American Chemical Society (ACS)

    David Walt

  320. Editorial

    Article • Applied Biochemistry and Biotechnology, January 1996, Springer Science + Business Media

    David Walt

  321. Improved fiber-optic chemical sensor for penicillin

    Article • Analytical Chemistry, December 1995, American Chemical Society (ACS)

    David Walt

  322. Dual-Analyte Fiber-Optic Sensor for the Simultaneous and Continuous Measurement of Glucose and Oxygen

    Article • Analytical Chemistry, October 1995, American Chemical Society (ACS)

    David Walt

  323. <title>Fiber optic array sensors as an architecture for an artificial nose</title>

    Article • September 1995, SPIE

    David Walt

  324. Combined Imaging and Chemical Sensing Using a Single Optical Imaging Fiber

    Article • Analytical Chemistry, September 1995, American Chemical Society (ACS)

    David Walt

  325. Sensitivity enhancement of fluorescent pH indicators using pH-dependent energy transfer

    Article • Analytica Chimica Acta, September 1995, Elsevier

    David Walt

  326. Photodeposition of Micrometer-Scale Polymer Patterns on Optical Imaging Fibers

    Article • Science, August 1995, American Association for the Advancement of Science

    David Walt

  327. Analytical Applications of Optical Imaging Fibers

    Article • Analytical Chemistry, August 1995, American Chemical Society (ACS)

    David Walt

  328. Synthesis of pH-sensitive modified cellulose ether halfesters and their use in pH detecting systems based on fiber optics

    Article • Journal of Controlled Release, August 1995, Elsevier

    David Walt

  329. A Fiber-Optic Carbon Dioxide Sensor for Fermentation Monitoring

    Article • Nature Biotechnology, June 1995, Springer Science + Business Media

    David Walt

  330. <title>Concurrent imaging and sensing using a single optical imaging fiber</title>

    Article • May 1995, SPIE

    David Walt

  331. <title>Development of a penicillin biosensor using a single optical imaging fiber</title>

    Article • May 1995, SPIE

    David Walt

  332. <title>Simultaneous monitoring of O2, CO2, and pH using a 200-micrometer optical imaging fiber</title>

    Article • May 1995, SPIE

    David Walt

  333. The chemistry of enzyme and protein immobilization with glutaraldehyde

    Article • TrAC Trends in Analytical Chemistry, November 1994, Elsevier

    David Walt

  334. Fabrication of Patterned Sensor Arrays with Aryl Azides on a Polymer-Coated Imaging Optical Fiber Bundle

    Article • Analytical Chemistry, October 1994, American Chemical Society (ACS)

    David Walt

  335. Development of sensor arrays for continuous groundwater monitoring

    Article • September 1994, SPIE

    David Walt

  336. Optical microsensor arrays

    Article • September 1994, SPIE

    David Walt

  337. Development of sensor arrays using fiber optic imaging bundles

    Article • July 1994, SPIE

    David Walt

  338. <title>Fiber optic sensor for oceanic carbon dioxide</title>

    Article • March 1994, SPIE

    David Walt

  339. <title>Monitoring of fermentation parameters with fiber optics</title>

    Article • March 1994, SPIE

    David Walt

  340. <title>Simultaneous imaging and pH measurments with a single fiber optic imaging bundle</title>

    Article • March 1994, SPIE

    David Walt

  341. Fiber-Optic Immunosensors Based on Continuous Reagent Delivery

    Article • ImmunoMethods, October 1993, Elsevier

    David Walt

  342. Fiber-optic Sensor for Continuous Monitoring of Fermentation pH

    Article • Nature Biotechnology, June 1993, Springer Science + Business Media

    David Walt

  343. <title>Simultaneous imaging and pH measurement with a single 250-micron-diameter optical fiber</title>

    Article • May 1993, SPIE

    David Walt

  344. <title>Fiber optic sensor based on microencapsulated reagents</title>

    Article • April 1993, SPIE

    David Walt

  345. <title>Microfabrication of optical sensor array</title>

    Article • April 1993, SPIE

    David Walt

  346. Fluorescent optical sensors

    Article • Applied Biochemistry and Biotechnology, April 1993, Springer Science + Business Media

    David Walt

  347. Multiple-indicator fiber-optic sensor for high-resolution pCO2 sea water measurements

    Article • Analytica Chimica Acta, March 1993, Elsevier

    David Walt

  348. pH-Dependent fluorescence and singlet energy transfer in water-soluble polymers containing eosin and phenol red chromophores

    Article • Journal of Fluorescence, December 1992, Springer Science + Business Media

    David Walt

  349. Development of a fiber optic sensor for measurement of pCO2 in sea water: design criteria and sea trials

    Article • Deep Sea Research Part A Oceanographic Research Papers, June 1992, Elsevier

    David Walt

  350. Fiber-optic sensors for continuous clinical monitoring

    Article • Proceedings of the IEEE, June 1992, Institute of Electrical & Electronics Engineers (IEEE)

    David Walt

  351. <title>Spatially resolved photopolymerized image-ready single-fiber sensor for blood gas analysis</title>

    Article • April 1992, SPIE

    David Walt

  352. A fibre-optic chemical sensor with discrete sensing sites

    Article • Nature, September 1991, Springer Science + Business Media

    David Walt

  353. Enzyme-catalyzed synthesis of fluoromalonyl-CoA

    Article • Bioorganic Chemistry, September 1991, Elsevier

    David Walt

  354. Fiber-optic organic vapor sensor

    Article • Environmental Science & Technology, July 1991, American Chemical Society (ACS)

    David Walt

  355. A new chemical method for synthesizing and recycling acyl coenzyme A thioesters

    Article • The Journal of Organic Chemistry, May 1991, American Chemical Society (ACS)

    David Walt

  356. Sensitivity enhancement of fluorescent pH indicators by inner filter effects

    Article • Analytical Chemistry, April 1991, American Chemical Society (ACS)

    David Walt

  357. Antibody-based fiber optic sensors for environmental and process-control applications

    Article • March 1991, SPIE

    David Walt

  358. Chemical Sensors Based on Controlled-Release Polymer Systems

    Article • Science, February 1991, American Association for the Advancement of Science

    David Walt

  359. pH-dependent fluorescence of merocyanine-eosin-labeled water-soluble polymers

    Article • Macromolecules, October 1990, American Chemical Society (ACS)

    David Walt

  360. Continuous clinical monitoring using fiber optic sensors

    Article • August 1990, SPIE

    David Walt

  361. Fiber optic sensors based on time-release polymers

    Article • July 1990, SPIE

    David Walt

  362. Enzyme-catalyzed synthesis of citric acid using acetyl-coenzyme a recycling in a two-phase system

    Article • Bioorganic Chemistry, June 1990, Elsevier

    David Walt

  363. Intramolecular fluorescence self-quenching of fluoresceinamine

    Article • Journal of the American Chemical Society, March 1990, American Chemical Society (ACS)

    David Walt

  364. Plasma modification and collagen binding to PTFE grafts

    Article • Journal of Colloid and Interface Science, October 1989, Elsevier

    David Walt

  365. Avidin-biotin coupling as a general method for preparing enzyme-based fiber-optic sensors

    Article • Analytical Chemistry, May 1989, American Chemical Society (ACS)

    David Walt

  366. Fiber-optic sensors based on reagent delivery with controlled-release polymers

    Article • Analytical Chemistry, January 1989, American Chemical Society (ACS)

    David Walt

  367. Fiber-Optic Chemical Sensors Based On Energy Transfer

    Article • June 1988, SPIE

    David Walt

  368. Fiber Optic Chemical Sensors Using Immobilized Bioreceptors

    Article • June 1988, SPIE

    David Walt

  369. Acetyl coenzyme A synthetase catalyzed reactions of coenzyme A with α,β-unsaturated carboxylic acids

    Article • Analytical Biochemistry, May 1988, Elsevier

    David Walt

  370. A fiber-optic sensor for CO2 measurement

    Article • Talanta, February 1988, Elsevier

    David Walt

  371. Polymer immobilized enzyme optrodes for the detection of penicillin

    Article • Analytical Chemistry, December 1987, American Chemical Society (ACS)

    David Walt

  372. Calculation for fluorescence modulation by absorbing species and its application to measurements using optical fibers

    Article • Analytical Chemistry, October 1987, American Chemical Society (ACS)

    David Walt

  373. Preparation Of Small Diameter Sensors For Continuous Clinical Monitoring

    Article • April 1987, SPIE

    David Walt

  374. Physiological pH fiber-optic chemical sensor based on energy transfer

    Article • Analytical Chemistry, February 1987, American Chemical Society (ACS)

    David Walt

  375. Enzymic synthesis of L-acetylcarnitine and citric acid using acetyl coenzyme A recycling

    Article • The Journal of Organic Chemistry, July 1986, American Chemical Society (ACS)

    David Walt

  376. Polymer Modification of Fiber Optic Chemical Sensors as a Method of Enhancing Fluorescence Signal for pH Measurement

    Article • Analytical Chemistry, June 1986, American Chemical Society (ACS)

    David Walt

  377. Polymer modification of fiber optic chemical sensors as a method of enhancing fluorescence signal for pH measurement

    Article • Analytical Chemistry, June 1986, American Chemical Society (ACS)

    David Walt

  378. Immobilization of enzymes in polymer supports

    Article • Journal of Chemical Education, April 1986, American Chemical Society (ACS)

    David Walt

  379. The effect of gravity on initial microbial adhesion

    Article • Journal of Colloid and Interface Science, October 1985, Elsevier

    David Walt

  380. Clinical Measurements Using Fiber Optics And Optrodes

    Article • October 1984, SPIE

    David Walt

  381. An efficient chemical and enzymic synthesis of nicotinamide adenine dinucleotide (NAD+)

    Article • Journal of the American Chemical Society, January 1984, American Chemical Society (ACS)

    David Walt

  382. Anthracyclines and related substances. 3. Regiospecific total synthesis of 11-deoxydaunomycinone

    Article • Journal of the American Chemical Society, March 1981, American Chemical Society (ACS)

    David Walt

  383. Synthesis of nicotinamide adenine dinucleotide (NAD) from adenosine monophosphate (AMP)

    Article • Journal of the American Chemical Society, December 1980, American Chemical Society (ACS)

    David Walt

  384. Active Class Selection

    Article • Springer Science + Business Media

    David Walt

  385. Fiber Optic Sensor For Detection Of PCO/sub 2/ In Seawater

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    David Walt