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arXiv 2102.10384cond-mat.mes-hall
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内共振对MoS2谐振器动力学特性的影响

Effect of internal resonance on the dynamics of MoS2 resonator

Nishta Arora, A. K. Naik

摘要:

非线性模态相互作用和相关的内部共振现象最近已被用来证明改善振荡器的性能和增强的传感能力。在这里,我们显示了可调模式相互作用的二硫化钼谐振器。我们通过使用静电栅电压实现了这些初始非耦合模式之间的耦合的可调谐性。这种可调耦合使我们能够使模式相称,并观察模式之间的能量交换。我们将振动模式之间的强能量交换归因于2:1内部共振。这种相互作用强烈地影响这种谐振器的模态响应的动力学。我们观察到峰分裂,即使在线性制度的模态响应之间的能量交换的签名。我们模型我们的设备来解释所观察到的效果的激励,失谐的模式频率,和谐振器的动态的模间耦合强度。在这项工作中探索的MoS2谐振器是理解通过模间耦合提供的丰富动力学的理想选择。

英文摘要:

Nonlinear modal interactions and associated internal resonance phenomena have recently been used to demonstrate improved oscillator performance and enhanced sensing capabilities. Here, we show tunable modal interaction in a MoS2 resonator. We achieve the tunability of coupling between these initially uncoupled modes by using electrostatic gate voltages. This tunable coupling enables us to make the modes commensurate and observe energy exchange between the modes. We attribute the strong energy exchange between the vibrational modes to 2:1 internal resonance. This interaction strongly affects the dynamics of the modal response of such resonators. We observe peak splitting, a signature of energy exchange between the modes even when the modal response is in the linear regime. We model our device to explain the observed effect of excitation, detuning of modal frequencies, and intermodal coupling strength on the resonator dynamics. MoS2 resonators explored in this work are ideal for understanding the rich dynamics offered through the intermodal coupling.

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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