Novel Surface Forces Apparatus for Characterizing Solid-Liquid Interfaces

Surface forces measurement is a powerful tool for molecular level of characterization of solid-liquid interfaces and complex systems. In this review, we report the development of novel nano-scale measurements based on surface forces apparatus (SFA): (1) Twin-path SFA, which enabled us to study wide variety of samples such as metals and ceramics. (2) The resonance shear measurement (RSM), which is a sensitive method for evaluating properties of confined liquids for nano-rheology and tribology. We also summarize some of our recent researches on (1) evaluation of a surface potential and charge density of the electrodes using electrochemical surface forces apparatus, (2) characterization of ionic liquids confined between silica surfaces. (C) The Electrochemical Society of Japan, All rights reserved.