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Tunable nonlinear damping in MoS2 nanoresonator

Prasad, P and Arora, N and Naik, AK (2023) Tunable nonlinear damping in MoS2 nanoresonator. In: Applied Physics Letters, 123 (26).

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Official URL: https://doi.org/10.1063/5.0177422


Nonlinear damping plays a significant role in several areas of physics, including the dynamics of nanoresonators. However, many aspects remain unclear, and the microscopic source of nonlinear damping is still an active area of research. In particular, the effect of mode coupling on the observed damping has drawn significant interest. Here, we report on the effect of mode coupling on nonlinear damping in a highly tunable MoS2 nano-mechanical drum resonator. In our experiments, we observe enhanced nonlinear damping in the parameter space that favors internal resonance. We observe this enhanced damping both in the direct drive and the parametric drive measurements. The study presents a comprehensive characterization of the tunable nonlinear damping of a MoS2 resonator in a parametric regime. Our work marks a significant advancement in understanding the potential sources of nonlinear damping. Moreover, a highly tunable 2D material based nanoresonator offers an excellent platform to study nonlinear physics and exploit tunable nonlinear damping. © 2023 Author(s).

Item Type: Journal Article
Publication: Applied Physics Letters
Publisher: American Institute of Physics Inc.
Additional Information: The copyright for this article belongs to Author.
Keywords: Damping; Layered semiconductors; Parameter estimation; Resonators; Sulfur compounds, Active area; Direct drive; Internal resonance; Mechanical; Mode coupling; Nanoresonators; Nonlinear damping; Parameter spaces; Parametric drives; Tunables, Molybdenum compounds
Department/Centre: Others
Date Deposited: 01 Mar 2024 09:51
Last Modified: 01 Mar 2024 09:51
URI: https://eprints.iisc.ac.in/id/eprint/84011

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