Embracing structural nonidealities and asymmetries in two-dimensional nanomechanical resonators.

ABSTRACT: Mechanical exfoliation is a convenient and effective approach to deriving two-dimensional (2D) nanodevices from layered materials; but it is also generally perceived as unpreferred as it often yields devices with structural irregularities and nonidealities. Here we show that such nonidealities can lead to new and engineerable features that should be embraced and exploited. We measure and analyze high frequency nanomechanical resonators based on exfoliated 2D molybdenum disulfide (MoS2) structures, and focus on investigating the effects of structural nonidealities and asymmetries on device characteristics and performance. In high and very high frequency (HF/VHF) vibrating MoS2 devices based on diaphragms of ~2-5 μm in size, structural nonidealities in shape, boundary, and geometric symmetry

SUBMITTER: Wang Z 

PROVIDER: S-EPMC3905272 | biostudies-literature | 2014 Jan

REPOSITORIES: biostudies-literature