Intermodal Coupling Induced Nonlinear Damping in Molybdenum Disulfide (MoS2) Resonator

Arora, N and Prasad, P and Naik, A (2022) Intermodal Coupling Induced Nonlinear Damping in Molybdenum Disulfide (MoS2) Resonator. In: 35th IEEE International Conference on Micro Electro Mechanical Systems Conference, MEMS 2022, 9 - 13 January 2022, Tokyo, pp. 495-498.

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Abstract

In this work, we provide experimental evidence to support the theoretical understanding of the microscopic origin of nonlinear damping in molybdenum disulfide (MoS2) resonator mediated through intermodal coupling. In atomically thin two-dimensional membranes, the effect of intermodal coupling on energy dissipation cannot be ignored since the vibrational modes are intrinsically coupled through membrane strain. The origin of nonlinear damping in Mos2 resonator due to intermodal coupling (internal resonance) is observed in the linear regime with varying gate bias. We further confirm our hypothesis through observation of fundamental mode peak splitting arising due to strong intermodal coupling at higher actuation force (0.45nN).

Item Type:	Conference Paper
Publication:	IEEE Symposium on Mass Storage Systems and Technologies
Publisher:	IEEE Computer Society
Additional Information:	The copyright for this article belongs to the IEEE Computer Society.
Keywords:	Damping; Energy dissipation; Layered semiconductors; Molybdenum compounds; Sulfur compounds, Coupling resonance; Intermodal coupling; Internal resonance; Modal coupling; Modal coupling and internal resonance; Molybdenum disulphide (mos2); Nonlinear damping; Nonlinearity; Two-dimensional; Two-dimensional resonator, Resonators
Department/Centre:	Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited:	06 Jul 2022 05:28
Last Modified:	06 Jul 2022 05:28
URI:	https://eprints.iisc.ac.in/id/eprint/74221

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