Microtensile tests of mechanical properties of nanoporous Au thin films
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The mechanical properties of nanoporous Au (NPG) thin films were investigated by uniaxial microtensile tests. Such mechanical parameters as Young’s modulus, tensile strength, and breaking strain were obtained from the recorded force–displacement curves. Through observations on the microstructure and fracture surface morphology of the samples after the tension tests by a scanning electronic microscope (SEM) and an optical microscope, we analyzed the physical mechanisms underlying the mechanical behavior of NPG thin films. It was found that the NPG films exhibit mechanical properties distinctly different from its bulk counterpart.
KeywordsElongation Rate Uniaxial Tension Test Actuate Unit Microtensile Test Ligament Size
This study is supported by the NSFC (grants No. 10572071, 10732080, and 10525210), the National Basic Research Program of China (grant No. 2007CB936803 and 2004CB619304), the Ministry of Education (grant No. 20070003053), and the Central Laboratory of Strength and Vibration of Tsinghua University. YD is a Tai-Shan Scholar supported by the SEM-NCET and SRF-ROCS Programs.
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