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micromachinesArticleCurved Film Microstructure Arrays Fabricated by way of Olesoxime manufacturer mechanical StretchingQiushu Zhang, Bei Peng , Mengqi Chu, Pan Wen, Song Wang and Jintao XuSchool of Mechanical and Electrical Engineering, University of Electronic Science and Technologies of China, Chengdu 611731, China; [email protected] (Q.Z.); [email protected] (M.C.); [email protected] (P.W.); [email protected] (S.W.); [email protected] (J.X.) Correspondence: [email protected]: We report on curved film microstructure arrays fabricated by way of polydimethylsiloxane (PDMS) film buckling induced by mechanical stretching. Within the method from the microstructure preparation, a PDMA film is glued on a bidirectionally prestretched PDMS sheet that has a square distributed hole array on its surface. Just after releasing the prestrain, the film microstructure array is created spontaneously. The fabricated microstructures possess a spherical surface and demonstrate extremely fantastic uniformity. The film microstructure arrays can serve as microlens arrays with a focal length of 1010 . The microstructure formation mechanism is investigated by means of theoretical analysis and numerical simulation. The simulation final results agree properly with all the experimental final results. The prestrain