All Stories

  1. Macroscopic and microscopic insights regarding organization of nematic liquid crystalline phase assisted by in situ grown gold nanoparticles

    Article • AIP Advances, June 2024, American Institute of Physics

    Biswarup Satpati, Prof. Dr. Alokmay Datta , Kaustabh Dan

  2. Effect of annealing on gold thin film on silicon surfaces deposited by electroless deposition

    Article • January 2019, American Institute of Physics

    Biswarup Satpati

  3. Synthesis of core-shell nanocubes for higher SERS enhancement

    Article • January 2019, American Institute of Physics

    Biswarup Satpati

  4. Electrochemical Ostwald ripening and surface diffusion in the galvanic displacement reaction: control over particle growth

    Article • RSC Advances, January 2015, Royal Society of Chemistry

    Biswarup Satpati

  5. Enhancement of persistent photoconductivity of ZnO nanorods under polyvinyl alcohol encapsulation

    Article • Materials Science in Semiconductor Processing, August 2014, Elsevier

    Biswarup Satpati

  6. Evolution of porous network in GaSb under normally incident 60 keV Ar+-ion irradiation

    Article • Applied Surface Science, August 2014, Elsevier

    Biswarup Satpati

  7. ZSM‐5 Zeolite Nanosheets with Improved Catalytic Activity Synthesized Using a New Class of Structure‐Directing Agents

    Article • Chemistry - A European Journal, July 2014, Wiley

    Biswarup Satpati

  8. Facile synthesis of Ag–ZnO hybrid nanospindles for highly efficient photocatalytic degradation of methyl orange

    Article • Physical Chemistry Chemical Physics, July 2014, Royal Society of Chemistry

    Biswarup Satpati, Dr. Satyabrata Mohapatra

  9. Nanostructure array

    Article • Frontiers in Human Neuroscience, June 2014, American Institute of Physics

    Biswarup Satpati

  10. Contrasting Magnetic Properties of Thermally and Chemically Reduced Graphene Oxide

    Article • The Journal of Physical Chemistry C, June 2014, American Chemical Society (ACS)

    Biswarup Satpati

  11. Facile preparation of β-Ni(OH)2-NiCo2O4 hybrid nanostructure and its application in the electro-catalytic oxidation of methanol

    Article • Electrochimica Acta, June 2014, Elsevier

    Biswarup Satpati

  12. Enhanced photocatalytic activity of Ag–ZnO hybrid plasmonic nanostructures prepared by a facile wet chemical method

    Article • Beilstein Journal of Nanotechnology, May 2014, Beilstein Institut

    Biswarup Satpati, Dr. Satyabrata Mohapatra

  13. Anomalous x-ray scattering study of the growth of inverted quantum hut structures in a Si-Ge superlattice emitting strong photoluminescence

    Article • Physical Review B, May 2014, American Physical Society (APS)

    Biswarup Satpati

  14. Highly luminescent two dimensional excitons in atomically thin CdSe nanosheets

    Article • Frontiers in Human Neuroscience, May 2014, American Institute of Physics

    Biswarup Satpati

  15. Highly efficient and green chemical synthesis of imidazolyl alcohols and N-imidazolyl functionalized β-amino compounds using nanocrystalline ZSM-5 catalysts

    Article • Applied Catalysis A General, May 2014, Elsevier

    Biswarup Satpati

  16. Keggin-lysine hybrid nanostructures in the shape modulation of gold

    Article • Materials Research Express, January 2014, Institute of Physics Publishing

    Biswarup Satpati

  17. Bimetallic Core-Shell Nanorings

    Article • Journal of Materials Chemistry C, January 2014, Royal Society of Chemistry

    Biswarup Satpati

  18. Facile synthesis and the photo-catalytic behavior of core–shell nanorods

    Article • RSC Advances, January 2014, Royal Society of Chemistry

    Biswarup Satpati

  19. Synergistically controlled nano-templated growth of tunable gold bud-to-blossom nanostructures: a pragmatic growth mechanism

    Article • Journal of Materials Chemistry C, January 2014, Royal Society of Chemistry

    Biswarup Satpati

  20. Formation of Au–Ge nanodots by Au− ion sputtering of Ge

    Article • Vacuum, January 2014, Elsevier

    Biswarup Satpati

  21. Production of ordered and pure Si nanodots at grazing ion beam sputtering under concurrent substrate rotation

    Article • Materials Science and Engineering B, January 2014, Elsevier

    Biswarup Satpati

  22. Enhanced photocatalytic activity of Co doped ZnO nanodisks and nanorods prepared by a facile wet chemical method

    Article • Physical Chemistry Chemical Physics, January 2014, Royal Society of Chemistry

    Biswarup Satpati, Dr. Satyabrata Mohapatra

  23. Tilt boundary induced heteroepitaxy in chemically grown dendritic silver nanostructures on germanium and their optical properties

    Article • Physical Chemistry Chemical Physics, January 2014, Royal Society of Chemistry

    Biswarup Satpati

  24. A facile method for the synthesis of Co-core Au-shell nanohybrid

    Article • New Journal of Chemistry, January 2014, Royal Society of Chemistry

    Biswarup Satpati, Chinnakonda Gopinath

  25. Simultaneous detection of guanine, adenine, thymine, and cytosine at polyaniline/MnO2 modified electrode

    Article • Electrochimica Acta, December 2013, Elsevier

    Biswarup Satpati

  26. Structural, optical and photocatalytic properties of flower-like ZnO nanostructures prepared by a facile wet chemical method

    Article • Beilstein Journal of Nanotechnology, November 2013, Beilstein Institut

    Biswarup Satpati, Dr. Satyabrata Mohapatra

  27. Highly Efficient Nanocrystalline Zirconosilicate Catalysts for the Aminolysis, Alcoholysis, and Hydroamination Reactions

    Article • ACS Catalysis, November 2013, American Chemical Society (ACS)

    Biswarup Satpati

  28. Giant enhancement of magnetoresistance in core-shell ferromagnetic-charge ordered nanostructures

    Article • Frontiers in Human Neuroscience, November 2013, American Institute of Physics

    Biswarup Satpati

  29. Facile preparation of Ni(OH)2–MnO2 hybrid material and its application in the electrocatalytic oxidation of hydrazine

    Article • Journal of Hazardous Materials, November 2013, Elsevier

    Biswarup Satpati

  30. Simultaneous and sensitive determination of ascorbic acid, dopamine, uric acid, and tryptophan with silver nanoparticles-decorated reduced graphene oxide modified electrode

    Article • Colloids and Surfaces B Biointerfaces, November 2013, Elsevier

    Biswarup Satpati

  31. Formation of single-crystalline CuS at the organic–aqueous interface

    Article • Journal of Physics Condensed Matter, September 2013, Institute of Physics Publishing

    Biswarup Satpati

  32. Facile preparation of polyaniline/MnO2 nanofibers and its electrochemical application in the simultaneous determination of catechol, hydroquinone, and resorcinol

    Article • Sensors and Actuators B Chemical, September 2013, Elsevier

    Biswarup Satpati

  33. Structural and microstructural characterizations of nanocrystalline hydroxyapatite synthesized by mechanical alloying

    Article • Materials Science and Engineering C, July 2013, Elsevier

    Biswarup Satpati

  34. Microstructure and optical characterizations of mechanosynthesized nanocrystalline (Ti0.9Si0.1)N

    Article • Powder Technology, June 2013, Elsevier

    Biswarup Satpati

  35. Direct Experimental Evidence of Nucleation and Kinetics Driven Two-Dimensional Growth of Core–Shell Structures

    Article • The Journal of Physical Chemistry C, May 2013, American Chemical Society (ACS)

    Biswarup Satpati

  36. Diameter-dependent coercivity of cobalt nanowires

    Article • Applied Physics A, April 2013, Springer Science + Business Media

    Biswarup Satpati

  37. A facile approach for in situ synthesis of graphene–branched-Pt hybrid nanostructures with excellent electrochemical performance

    Article • Nanoscale, January 2013, Royal Society of Chemistry

    Biswarup Satpati

  38. Hybrid nanotubes: Single step formation of homogeneous nanotubes of polypyrrole-gold composites and novel switching transition of resistance beyond liquid nitrogen temperature

    Article • Journal of Applied Physics, August 2012, American Institute of Physics

    Biswarup Satpati

  39. Structural and optical characterization of thick and thin polycrystalline diamond films deposited by microwave plasma activated CVD

    Article • Bulletin of Materials Science, February 2012, Springer Science + Business Media

    Biswarup Satpati

  40. Template synthesis and characterizations of nickel nanorods

    Article • January 2012, American Institute of Physics

    Biswarup Satpati

  41. Synthesis of Dicationic Ionic Liquids and their Application in the Preparation of Hierarchical Zeolite Beta

    Article • Chemistry - A European Journal, November 2011, Wiley

    Biswarup Satpati

  42. ENHANCEMENT OF FIELD EMISSION CHARACTERISTICS IN ALIGNED MULTIWALLED CARBON NANOTUBES DUE TO 70 MeV Ni 6+ ION IRRADIATION

    Article • International Journal of Nanoscience, August 2011, World Scientific Pub Co Pte Lt

    Biswarup Satpati

  43. Quickest Single-Step Mechanosynthesis of CdS Quantum Dots and Their Microstructure Characterization

    Article • Journal of Nanoscience and Nanotechnology, June 2011, American Scientific Publishers

    Biswarup Satpati

  44. A facile approach for morphosynthesis of Pd nanoelectrocatalysts

    Article • Chemical Communications, January 2011, Royal Society of Chemistry

    Biswarup Satpati, Dr Ranjan K Sahu

  45. Effects of thermal annealing on structural and magnetic properties of thin Pt/Cr/Co multilayers

    Article • Journal of Magnetism and Magnetic Materials, November 2010, Elsevier

    Biswarup Satpati, Dr Jitendra Kumar Tripathi

  46. Production and dispersion stability of ultrafine Al–Cu alloy powder in base fluid

    Article • Journal of Alloys and Compounds, August 2010, Elsevier

    Biswarup Satpati

  47. Mechanosynthesis of nanocrystalline titanium nitride and its microstructure characterization

    Article • Journal of Alloys and Compounds, March 2010, Elsevier

    Biswarup Satpati

  48. pH and temperature dependent facile precipitation of nano-goethite particles in Fe(NO3)3–NaOH–NH3NH2HSO4–H2O medium

    Article • Colloids and Surfaces A Physicochemical and Engineering Aspects, February 2010, Elsevier

    Biswarup Satpati

  49. Interfacial intermixing in InAs/GaSb short-period-superlattices grown by molecular beam epitaxy

    Article • Frontiers in Human Neuroscience, January 2010, American Institute of Physics

    Biswarup Satpati

  50. Facile synthesis of nanostructured hydroxyapatite–titania bio-implant scaffolds with different morphologies: their bioactivity and corrosion behaviour

    Article • Journal of Materials Chemistry, January 2010, Royal Society of Chemistry

    Biswarup Satpati

  51. Facile synthesis of ultra-small monodisperse ceria nanocrystals at room temperature and their catalytic activity under visible light

    Article • Journal of Materials Chemistry, January 2010, Royal Society of Chemistry

    Biswarup Satpati

  52. Effect of cerium addition on microstructure and mechanical properties of Al-Zn-Mg-Cu alloy

    Article • Transactions of the Indian Institute of Metals, December 2009, Springer Science + Business Media

    Biswarup Satpati

  53. Microstructure characterization of mechanically synthesized ZnS quantum dots

    Article • Journal of Applied Physics, August 2009, American Institute of Physics

    Biswarup Satpati

  54. Swift Heavy Ion Beam-induced Recrystallisation of Buried Silicon Nitride Layer

    Article • Defence Science Journal, July 2009, Defence Scientific Information and Documentation Centre

    Biswarup Satpati

  55. Gold supported iron oxide–hydroxide derived from iron ore tailings for CO oxidation

    Article • Applied Surface Science, April 2009, Elsevier

    Biswarup Satpati

  56. Interface properties of (Ga,In)(N,As) and (Ga,In)(As,Sb) materials systems grown by molecular beam epitaxy

    Article • Journal of Crystal Growth, March 2009, Elsevier

    Biswarup Satpati

  57. Large Spin Diffusion Length in an Amorphous Organic Semiconductor

    Article • Physical Review Letters, June 2008, American Physical Society (APS)

    Biswarup Satpati

  58. Type II transition in InSb-based nanostructures for midinfrared applications

    Article • Journal of Applied Physics, June 2008, American Institute of Physics

    Biswarup Satpati

  59. 1.55-μm range InAs/InP (100) quantum dot telecom devices

    Article • September 2007, SPIE

    Biswarup Satpati

  60. Coexistent compressive and tensile strain in Ag thin films on Si(1 1 1)-() surfaces

    Article • Applied Surface Science, September 2007, Elsevier

    Biswarup Satpati

  61. Molecular-beam epitaxy of InSb/GaSb quantum dots

    Article • Journal of Applied Physics, June 2007, American Institute of Physics

    Biswarup Satpati

  62. Interface analysis of InAs/GaSb superlattice grown by MBE

    Article • Journal of Crystal Growth, April 2007, Elsevier

    Biswarup Satpati

  63. Investigations of InSb‐based quantum dots grown by molecular‐beam epitaxy

    Article • physica status solidi c, April 2007, Wiley

    Biswarup Satpati

  64. High-density InSb-based quantum dots emitting in the mid-infrared

    Article • Journal of Crystal Growth, April 2007, Elsevier

    Biswarup Satpati

  65. Two mega-electron volt proton-irradiation effects on fullerene films

    Article • Radiation Effects and Defects in Solids, April 2007, Taylor & Francis

    Biswarup Satpati

  66. Microstructural study of dynamically annealed c-Si using MeV N+ ions

    Article • Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms, March 2007, Elsevier

    Biswarup Satpati

  67. Magnetism in C 60 films induced by proton irradiation

    Article • Physical Review B, February 2007, American Physical Society (APS)

    Biswarup Satpati

  68. MeV heavy ion induced recrystallization of buried silicon nitride layer: Role of energy loss processes

    Article • Journal of Applied Physics, February 2007, American Institute of Physics

    Biswarup Satpati

  69. Preferential heights in the growth of Ag islands on Si(111)-(7×7) surfaces

    Article • Surface Science, February 2007, Elsevier

    Biswarup Satpati

  70. Room-Temperature Tunnel Magnetoresistance and Spin-Polarized Tunneling through an Organic Semiconductor Barrier

    Article • Physical Review Letters, January 2007, American Physical Society (APS)

    Biswarup Satpati

  71. High-density, uniform InSb∕GaSb quantum dots emitting in the midinfrared region

    Article • Frontiers in Human Neuroscience, December 2006, American Institute of Physics

    Biswarup Satpati

  72. Structural and optical properties of InSb quantum dots for mid‐IR applications

    Article • physica status solidi (b), November 2006, Wiley

    Biswarup Satpati

  73. Microstructural and magnetic properties of ZnO:TM (TM=Co,Mn) diluted magnetic semiconducting nanoparticles

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

    Biswarup Satpati, Dr. Sanjay Kumar Mandal

  74. Phase formation within Au and Ge nanoislands by room-temperature ion irradiation

    Article • Nanotechnology, October 2006, Institute of Physics Publishing

    Biswarup Satpati

  75. Self Assembled InAs/InP Quantum Dots for Telecom Applications in the 1.55 µm Wavelength Range: Wavelength Tuning, Stacking, Polarization Control, and Lasing

    Article • Japanese Journal of Applied Physics, August 2006, Japan Society of Applied Physics

    Biswarup Satpati

  76. High-temperature ferromagnetism in Zn1−xMnxO semiconductor thin films

    Article • Journal of Magnetism and Magnetic Materials, May 2006, Elsevier

    Biswarup Satpati

  77. Ion-beam induced transformations in nanoscale multilayers: Evolution of clusters with preferred length scales

    Article • Journal of Applied Physics, April 2006, American Institute of Physics

    Biswarup Satpati

  78. Nonmagnetic to magnetic nanostructures via ion irradiation

    Article • Microelectronic Engineering, April 2006, Elsevier

    Biswarup Satpati

  79. Role of electronic and nuclear energy losses in swift heavy ion beam induced epitaxial crystallization of a buried Si3N4 layer

    Article • Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms, April 2006, Elsevier

    Biswarup Satpati

  80. Carrier-controlled ferromagnetism in transparent oxide semiconductors

    Article • Nature Materials, March 2006, Springer Science + Business Media

    Biswarup Satpati

  81. Characterization of ion beam induced nanostructures

    Article • Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms, March 2006, Elsevier

    Biswarup Satpati

  82. Synthesis of surface alloy by nanomixing

    Article • Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms, March 2006, Elsevier

    Biswarup Satpati

  83. Energy dependent sputtering of nanoclusters from a nanodisperse target

    Article • Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms, March 2006, Elsevier

    Biswarup Satpati

  84. MeV heavy ion beam induced epitaxial crystallization of buried Si3N4 layer

    Article • Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms, March 2006, Elsevier

    Biswarup Satpati

  85. MeV ion-induced strain at nanoisland-semiconductor surface and interfaces

    Article • Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms, March 2006, Elsevier

    Biswarup Satpati

  86. Wavelength tuning of InAs∕InP quantum dots: Control of As∕P surface exchange reaction

    Article • January 2006, American Vacuum Society

    Biswarup Satpati

  87. Synthesis and Optical Properties of CdS Nanoribbons.

    Article • ChemInform, December 2005, Wiley

    Biswarup Satpati

  88. Interface-dominated growth of a metastable novel alloy phase

    Article • Journal of Materials Research, October 2005, Springer Science + Business Media

    Biswarup Satpati, Professor Dr. Alokmay Datta

  89. Synthesis and Optical Properties of CdS Nanoribbons

    Article • The Journal of Physical Chemistry B, September 2005, American Chemical Society (ACS)

    Biswarup Satpati

  90. Size distribution of sputtered particles from Au nanoislands due to MeV self-ion bombardment

    Article • Journal of Applied Physics, September 2005, American Institute of Physics

    Biswarup Satpati

  91. Electron and phonon confinement and surface phonon modes in CdSe–CdS core–shell nanocrystals

    Article • Journal of Physics Condensed Matter, September 2005, Institute of Physics Publishing

    Biswarup Satpati

  92. Role of Pb for Ag growth on H-passivated Si(1 0 0) surfaces

    Article • Applied Surface Science, August 2005, Elsevier

    Biswarup Satpati

  93. Gettering of implanted Au in MeV?C implanted Si

    Article • Applied Physics A, July 2005, Springer Science + Business Media

    Biswarup Satpati, Dr. Satyabrata Mohapatra

  94. Swift heavy-ion-induced epitaxial crystallization of buried Si3N4 layer

    Article • Journal of Applied Physics, July 2005, American Institute of Physics

    Biswarup Satpati

  95. Evidence for positive spin polarization in Co with SrTiO3 barriers

    Article • Journal of Applied Physics, May 2005, American Institute of Physics

    Biswarup Satpati

  96. Pattern growth of Ge films on PtBA polymer substrates

    Article • Physica E Low-dimensional Systems and Nanostructures, March 2005, Elsevier

    Biswarup Satpati

  97. Replicating nanostructures on silicon by low-energy ion beams

    Article • Nanotechnology, February 2005, Institute of Physics Publishing

    Biswarup Satpati

  98. Low energy O induced redistribution of nanosized Au inclusions in an oxide layer grown on Si(100)

    Article • Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms, January 2005, Elsevier

    Biswarup Satpati, Dr. Satyabrata Mohapatra

  99. Interface modification in Co∕Ge bilayer using swift heavy ions

    Article • Journal of Applied Physics, December 2004, American Institute of Physics

    Biswarup Satpati

  100. Nanomixing: A way to synthesize surface nanoalloys

    Article • Journal of Applied Physics, December 2004, American Institute of Physics

    Biswarup Satpati

  101. Ion-beam-induced embedded nanostructures and nanoscale mixing

    Article • Journal of Applied Physics, November 2004, American Institute of Physics

    Biswarup Satpati

  102. High-temperature ferromagnetism in manganese-doped indium–tin oxide films

    Article • Frontiers in Human Neuroscience, August 2004, American Institute of Physics

    Biswarup Satpati

  103. Nanoscale ion-beam mixing in Au–Si and Ag–Si eutectic systems

    Article • Applied Physics A, August 2004, Springer Science + Business Media

    Biswarup Satpati

  104. Metal-to-nonmetal transition in copper nanoshells grown on copper oxide nanoparticles

    Article • Journal of Applied Physics, July 2004, American Institute of Physics

    Biswarup Satpati

  105. Synthesis and Characterization of Mn-Doped ZnO Nanocrystals

    Article • The Journal of Physical Chemistry B, April 2004, American Chemical Society (ACS)

    Biswarup Satpati, D. D. Sarma

  106. Optical and microstructural characterization of CdS–ZnO nanocomposite thin films prepared by sol–gel technique

    Article • Journal of Physics D Applied Physics, January 2004, Institute of Physics Publishing

    Biswarup Satpati

  107. Glass–Ceramic–Metal Nanocomposites Containing a Ferroelectric Phase

    Article • Ferroelectrics, January 2004, Taylor & Francis

    Biswarup Satpati

  108. Understanding the quantum size effects in ZnO nanocrystals

    Article • Journal of Materials Chemistry, January 2004, Royal Society of Chemistry

    Biswarup Satpati, D. D. Sarma

  109. Shape variation in epitaxial microstructures of gold silicide grown on Br-passivated Si(111) surfaces

    Article • Surface Science, January 2004, Elsevier

    Biswarup Satpati

  110. Redistribution of Er implanted into Si(100): Correlation with implantation induced damage

    Article • Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms, December 2003, Elsevier

    Biswarup Satpati

  111. Energy spike induced effects in MeV ion-irradiated nanoislands

    Article • Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms, December 2003, Elsevier

    Biswarup Satpati

  112. Study of sputtered particles from gold nano-islands due to MeV self-ion irradiation

    Article • Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms, December 2003, Elsevier

    Biswarup Satpati

  113. Swift heavy ion induced formation of preferentially oriented Au0.6Ge0.4 alloy

    Article • Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms, December 2003, Elsevier

    Biswarup Satpati

  114. Swift heavy ion induced interface modification in Ni/Ge

    Article • Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms, December 2003, Elsevier

    Biswarup Satpati

  115. Formation of a tetragonal Cu3Au alloy at gold/copper interfaces

    Article • Surface and Interface Analysis, October 2003, Wiley

    Biswarup Satpati, Professor Dr. Alokmay Datta

  116. GROWTH OF SELF-ASSEMBLED EPITAXIAL GERMANIUM NANOISLANDS ON SILICON SURFACES BY MOLECULAR BEAM EPITAXY

    Article • August 2003, World Scientific Pub Co Pte Lt

    Biswarup Satpati

  117. Low current MeV Au2+ ion-induced amorphization in silicon: Rutherford backscattering spectrometry and transmission electron microscopy study

    Article • Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms, July 2003, Elsevier

    Biswarup Satpati

  118. Crater formation in gold nanoislands due to MeV self-ion irradiation

    Article • Journal of Applied Physics, May 2003, American Institute of Physics

    Biswarup Satpati, Dr. Satyabrata Mohapatra

  119. Diodelike behavior in glass–metal nanocomposites

    Article • Journal of Applied Physics, April 2003, American Institute of Physics

    Biswarup Satpati

  120. Surface and Interface Characterization of Ion Beam Re-crystallized Si

    Article • MRS Proceedings, January 2002, Springer Science + Business Media

    Biswarup Satpati

  121. Transmission Electron Microscopy Study of Sb-Based Quantum Dots

    Article • Springer Science + Business Media

    Biswarup Satpati