Please use this identifier to cite or link to this item:
|Type:||Artigo de periódico|
|Title:||Interfacial water dielectric-permittivity-profile measurements using atomic force microscopy|
de Souza, EF
|Abstract:||The arrangement of water molecules at charged aqueous interfaces is an important question in biology, electrochemistry, and geochemistry. Theoretical studies suggest that the molecules become arranged in several layers adjacent to a solid interface. Using atomic force microscopy we have measured the water dielectric-permittivity profile perpendicular to mica surfaces. The measured variable permittivity profile starting at epsilon approximate to4 at the interface and increasing to epsilon =80 about 10 nm from the surface suggests a reorientation of water molecule dipoles in the presence of the mica interfacial charge.|
|Editor:||American Physical Soc|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.