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Type: Artigo de periódico
Title: Physical Properties of Water Near a Gold Surface: A Nanorheological Analysis
Author: Soares, DM
Tenan, MA
Gomide, AB
Gomes, WE
Abstract: 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.
Subject: ion pairs
quartz crystal microbalance
surface chemistry
water chemistry
Country: Alemanha
Editor: Wiley-v C H Verlag Gmbh
Rights: fechado
Identifier DOI: 10.1002/cphc.200900700
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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