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Nanomaterials 2019, 9(4), 563; https://doi.org/10.3390/nano9040563

Opto-thermally Excited Fabry-Perot Resonance Frequency Behaviors of Clamped Circular Graphene Membrane

1
School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, China
2
Shenzhen Institute of Beihang University, Shenzhen 518063, China
*
Authors to whom correspondence should be addressed.
Received: 21 March 2019 / Accepted: 29 March 2019 / Published: 7 April 2019
PDF [1764 KB, uploaded 7 April 2019]

Abstract

An opto-thermally excited optical fiber Fabry-Perot (F-P) resonant probe with suspended clamped circular graphene diaphragm is presented in this paper. Then, the dependence of resonance frequency behaviors of graphene diaphragm upon opto-mechanical factors including membrane properties, laser excitation parameters and film boundary conditions are investigated via COMSOL Multiphysics simulation. The results show that the radius and thickness of membrane will linearly affect the optical fiber light-induced temperature distribution, thus resulting in rapidly decreasing resonance frequency changes with the radius-to-thickness ratio. Moreover, the prestress can be regulated in the range of 108 Pa to 109 Pa by altering the environmental temperature with a scale factor of 14.2 MPa/K. It is important to note that the availability of F-P resonant probe with a defective clamped circular graphene membrane can be improved notably by fabricating the defected circular membrane to a double-end clamped beam, which gives a broader perspective to characterize the resonance performance of opto-thermally excited F-P resonators.
Keywords: graphene membrane; Fabry-Perot resonator; opto-thermal actuation; resonance frequency simulation graphene membrane; Fabry-Perot resonator; opto-thermal actuation; resonance frequency simulation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Shi, F.-T.; Fan, S.-C.; Li, C.; Li, Z.-A. Opto-thermally Excited Fabry-Perot Resonance Frequency Behaviors of Clamped Circular Graphene Membrane. Nanomaterials 2019, 9, 563.

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