An electron microscope image shows a pre-crack in a suspended sheet of graphene used to measure the overall strength of the sheet in a test at Rice University. Rice and Georgia Tech scientists performed experiments and theoretical calculations and found that graphene, largely touted for its superior physical strength, is only as strong as its weakest point. Credit: The Nanomaterials, Nanomechanics and Nanodevices Lab/Rice University
A pre-cracked sheet of graphene was suspended and pulled apart on a spring-loaded stage to measure how much strength a defective piece of graphene shows. Scientists at Rice University and Georgia Tech found graphene is only as strong as its weakest point. Because most graphene has defects, its real strength is likely to be significantly lower than the intrinsic strength of a perfect sheet of the atom-thick carbon material. Credit: The Nanomaterials, Nanomechanics and Nanodevices Lab/Rice University
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