Friction measurement on free standing plates using atomic force microscopy. 2013

X S Tang, and Y C Loke, and P Lu, and Sujeet K Sinha, and S J O'Shea
Institute of Materials Research and Engineering, Agency for Science Technology and Research, 3 Research Link, Singapore 117602.

A method is introduced to measure friction on small, free standing objects, specifically microfabricated silicon plates, based on atomic force microscopy (AFM). An AFM tip is brought into contact with the plate resting on a substrate. The substrate is displaced laterally and, provided the AFM tip does not slide over the plate, the twisting of the AFM cantilever is used to measure the friction of the underlying plate-substrate interface. The method can measure nano-Newton to micro-Newton forces (both friction and applied load) and provides a means to measure friction of macroscopic structures at low load.

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