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arXiv 1808.01147cond-mat.mes-hall
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纳米线谐振器正交机械模式间的张力介导非线性耦合

Tension mediated nonlinear coupling between orthogonal mechanical modes of nanowire resonators

John P. Mathew, Anand Bhushan, Mandar M. Deshmukh

摘要:

研究了双钳位InAs纳米线谐振器正交弯曲模之间的非线性耦合。这两个正交模是由基模的对称破缺和简并度提升形成的。当一个模式被驱动到大振幅时,出现了Duffing非线性。在这种情况下,由于大振幅振荡引起的张力,模式耦合,并反映在没有强烈驱动的模式的滞后响应中。我们研究了机械模式的驱动-驱动响应,以阐明非线性模式耦合在这种机械谐振器中的作用。这里研究的耦合模式的动力学可以证明是有用的技术应用,如纳米线为基础的矢量力传感。

英文摘要:

We study the nonlinear coupling between orthogonal flexural modes of doubly clamped InAs nanowire resonators. The two orthogonal modes are formed by the symmetry breaking and lifting of degeneracy of the fundamental mode. The presence of a Duffing nonlinearity emerges when a mode is driven to large amplitudes. In this regime the modes are coupled due to the tension induced from the large amplitude of oscillations and is reflected in the hysteretic response of the mode that is not strongly driven. We study the driven-driven response of the mechanical modes to elucidate the role of nonlinear mode coupling in such mechanical resonators. The dynamics of the coupled modes studied here could prove useful in technological applications such as nanowire based vectorial force sensing.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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