Modulating the mass sensitivity of graphene resonators via kirigami
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Published:2022-09-12
Issue:48
Volume:33
Page:485504
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ISSN:0957-4484
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Container-title:Nanotechnology
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language:
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Short-container-title:Nanotechnology
Author:
Zhu Pengcheng,
Zhang Hao,
Zhang Xingbin,
Cao Wei,
Wang QuanORCID
Abstract
Abstract
The unique mechanical properties of graphene make it an excellent candidate for resonators. We have used molecule dynamic to simulate the resonance process of graphene. The kirigami approach was introduced to improve the mass sensitivity of graphene sheets. Three geometric parameters governing the resonant frequency and mass sensitivity of Kirigami graphene NEMS were defined. The simulation results show that the closer the kirigami defect is to the center of the drum graphene, the higher the mass sensitivity of the graphene. The kirigami graphene shows up to about 2.2 times higher mass sensitivity compared to pristine graphene. Simultaneously, the kirigami graphene has a higher out-of-plane amplitude and easy access to nonlinear vibrations, leading to higher mass sensitivity. Besides, the kirigami structure can restrict the diffusion of gold atoms on graphene under high initial velocity or large tension condition. It is evident that a reasonable defect design can improve the sensitivity and stability of graphene for adsorption mass.
Funder
Jiangsu Agriculture Science and Technology Innovation Fund
2020 Science and Technology Boosting Economy Project of National Key Research and Development Program of China
Wenzhou Science & technology Program
Subject
Electrical and Electronic Engineering,Mechanical Engineering,Mechanics of Materials,General Materials Science,General Chemistry,Bioengineering