What is it about?
Water at room temperature is not simply a medium for which uniform properties can always be assumed. Water close to solid hydrophobic or hydrophilic surfaces has elasticity, which is measured by monitoring the quartz crystal microbalance (QCM) resonant frequency and resistance. Small additions of salt are shown to modify this elasticity. Furthermore, near the hydrophobic QCM gold electrode, undersaturated aqueous NaCl solutions present a high concentration of ion pairs, which is confirmed by atomic force microscopy through force versus distance measurements.
Featured Image
Why is it important?
Water near interfaces is a subject of interest for many fields of science, including biological membranes technology and solid-liquid interface sensor development.
Perspectives
The hydrophobic and hydrophilic conditions of interfaces are of paramount importance for all solid-liquid technology. This work clearly shows that water molecules near interface can form structures sensible to Hofmeister series.
Dr. Wyllerson Gomes
Read the Original
This page is a summary of: Physical Properties of Water Near a Gold Surface: A Nanorheological Analysis, ChemPhysChem, February 2010, Wiley,
DOI: 10.1002/cphc.200900700.
You can read the full text:
Contributors
The following have contributed to this page
