Tuning mechanical modes and influence of charge screening in nanowire resonators

Details Tuning mechanical modes and influence of charge screening in nanowire resonators Tuning mechanical modes and influence of charge screening in nanowire resonators

2010-01-18

arxiv.org/abs/1001.2882v1

Phys. Rev. B 81, 115459 (2010).

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

For supporting information and high resolution figures please go to the following link http://www.tifr.res.in/~deshmukh/public

Scientific paper

10.1103/PhysRevB.81.115459

We probe electro-mechanical properties of InAs nanowire (diameter ~ 100 nm) resonators where the suspended nanowire (NW) is also the active channel of a field effect transistor (FET). We observe and explain the non-monotonic dispersion of the resonant frequency with DC gate voltage (VgDC). The effect of electronic screening on the properties of the resonator can be seen in the amplitude. We observe the mixing of mechanical modes with VgDC. We also experimentally probe and quantitatively explain the hysteretic non-linear properties, as a function of VgDC, of the resonator using the Duffing equation.

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