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Setup of the tensile strength test. (a) Setup of the tensile tester. It has an immobile jaw at the lower position and a movable jaw connected to a force sensor at the upper position. The sample is fixed on the jaws through screws; (b) assembled sample in the tester. The sample holders were first glued with two bare glass slides. The bonded PDMS-SU-8 sample was then sandwiched between the two glass slides using silicone glue.
