Tuning of geometric nonlinearity in ultrathin nanoelectromechanical systems

Samanta, Chandan and Arora, Nishta and Naik, A K (2018) Tuning of geometric nonlinearity in ultrathin nanoelectromechanical systems. In: APPLIED PHYSICS LETTERS, 113 (11).

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Abstract

Nonlinearities in nanoelectromechanical systems (NEMS) play a vital role in dynamics of the device. Clear understanding of nonlinearities and ability to tune and manipulate them to enhance the performance are crucial for applications with these devices. Here, we utilize an electrostatic mechanism to tune the geometric nonlinearity of an atomically thin NEMS. The exquisite tuning enables us to demonstrate hardening, softening, and mixed nonlinear responses in the device. The electrostatic tuning over the nonlinearity is utilized to effectively nullify Duffing nonlinearity in a specific regime. The observed mixed nonlinear response is the result of cross coupling between strong quadratic and quartic nonlinearities, an aspect explained by method of multiple scale analysis. Published by AIP Publishing.

Item Type:	Journal Article
Publication:	APPLIED PHYSICS LETTERS
Publisher:	AMER INST PHYSICS
Additional Information:	Copy right for this article belong to AMER INST PHYSICS
Department/Centre:	Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited:	04 Oct 2018 14:46
Last Modified:	04 Oct 2018 14:46
URI:	http://eprints.iisc.ac.in/id/eprint/60806

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