Nanofluidics of Single-Crystal Diamond Nanomechanical Resonators

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Single-crystal diamond nanomechanical resonators are being developed for countless applications. A number of these applications require that the resonator be operated in a fluid, that is, a gas or a liquid. Here, we investigate the fluid dynamics of single-crystal diamond nanomechanical resonators in the form of nanocantilevers. First, we measure the pressure-dependent dissipation of diamond nanocantilevers with different linear dimensions and frequencies in three gases, He, N-2 and Ar. We observe that a subtle interplay between the length scale and the frequency governs the scaling of the fluidic dissipation. Second, we obtain a comparison of the surface accommodation of different gases on the diamond surface by analyzing the dissipation in the molecular flow regime. Finally, we measure the thermal fluctuations of the nanocantilevers in water and compare the observed dissipation and frequency shifts with theoretical predictions. These findings set the stage for developing diamond nanomechanical resonators operable in fluids.
Publisher
AMER CHEMICAL SOC
Issue Date
2015-12
Language
English
Article Type
Article
Citation

NANO LETTERS, v.15, no.12, pp.8070 - 8076

ISSN
1530-6984
DOI
10.1021/acs.nanolett.5b03503
URI
http://hdl.handle.net/10203/277544
Appears in Collection
EE-Journal Papers(저널논문)
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