Elucidation of interactions is essential for designing materials and also for understanding their properties. Surface forces measurement directly measures surface interactions in liquids as a function of the surface separation with high sensitivity. It is a powerful tool for studying origins of forces operating between molecules and/or surfaces of interest. It also offers a unique, novel surface characterization method, which “monitors surface properties changing from the surface to the bulk (depth profiles)” and provides new insights into surface phenomena. The effective area which this measurement monitors is large, typically 30 μm in diameter, although the resolution of the separation distance is 0.1 nm. Due to these size ranges, the measurement is unique and can connect the meso- or macro-scopic interfacial phenomena with molecular properties. We have made efforts to expand the scope of this measurement in materials science, which include the development of an apparatus, twin-path SFA, for opaque samples, and applications of it for electrochemistry and tribology; preparation of smooth samples for replacing commonly used mica; and the development of the resonance shear measurement (RSM).

Surface forces measurement for materials science

255th National Meeting (2018)

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