Size Effect on Failure of Pre-stretched Free-Standing Nanomembranes

Rong Long, Chung-Yuen Hui, Wenlong Cheng, Michael J Campolongo, Dan Luo

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Free-standing nanomembranes are two-dimensional materials with nanometer thickness but can have macroscopic lateral dimensions. We develop a fracture model to evaluate a pre-stretched free standing circular ultrathin nanomembrane and establish a relation between the energy release rate of a circumferential interface crack and the pre-strain in the membrane. Our results demonstrate that detachment cannot occur when the radius of the membrane is smaller than a critical size. This critical radius is inversely proportional to the Younga??s modulus and square of the pre-strain of the membrane.
Original languageEnglish
Pages (from-to)1 - 4
Number of pages3
JournalNanoscale Research Letters
Issue number7
Publication statusPublished - 2010

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