The first virtual experiment question "Elasticity of Cantilever" of the 21st Asian Phys-ics Olympiad was introduced,the standard solution and software operation were given by the competi-tion organizer for learners' reference.Microcantilever beam sensor was widely used in the detection of nanomaterials' mechanical and thermal properties.This virtual experiment successfully simulated the influence of various jitter factors on the microcantilever beam sensor.The detections of stress,tem-perature and molecular adsorption force of nanostructure were realized by using single-layer and doub-le-layer microcantilever beams.It could be the reference for the design of relevant virtual instruments,physics competition in middle school and virtual experiment teaching in university.
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