Dynamic negative compressibility of few-layer graphene, h-BN, and MoS2.


We report a novel mechanical response of few-layer graphene, h-BN, and MoS(2) to the simultaneous compression and shear by an atomic force microscope (AFM) tip. The response is characterized by the vertical expansion of these two-dimensional (2D) layered materials upon compression. Such effect is proportional to the applied load, leading to vertical strain… (More)
DOI: 10.1021/nl300183e

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