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Qualitative effect of internal resonance on the dynamics of two-dimensional resonator

Arora, N and Naik, AK (2022) Qualitative effect of internal resonance on the dynamics of two-dimensional resonator. In: Journal of Physics D: Applied Physics, 55 (26).

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Official URL: https://10.1088/1361-6463/ac5bc8


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 molybdenum disulfide (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 1:2 internal resonance. This interaction strongly impacts 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. © 2022 IOP Publishing Ltd.

Item Type: Journal Article
Publication: Journal of Physics D: Applied Physics
Publisher: IOP Publishing Ltd
Additional Information: The copyright of this document belongs to the authors
Keywords: Dynamics; Layered semiconductors; Molybdenum compounds; Resonance; Resonators, Energy exchanges; Intermodal coupling; Internal resonance; Internal resonance phenomena; Modal coupling; Modal response; Molybdenum disulphide (MoS2); Nonlinear modal interactions; Two-dimensional; Two-dimensional materials, Sulfur compounds
Department/Centre: Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited: 19 May 2022 10:05
Last Modified: 19 May 2023 10:08
URI: https://eprints.iisc.ac.in/id/eprint/71926

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