Issue 44, 2020, Issue in Progress

Hydrogenated Ψ-graphene as an ultraviolet optomechanical sensor

Abstract

PSI (ψ)-graphene is a dynamically and thermally stable two-dimensional (2D) allotrope of carbon composed of 5-6-7 carbon rings. Herein, we study the opto/mechanical behavior of two graphene allotropes, Ψ-graphene and its hydrogenated form, Ψ-graphane under uniaxial and biaxial strain using density functional theory (DFT) calculations. We calculated the elastic constants and second Piola-Kirchhoff (PK2) stresses, in which both nanostructures indicate a similar elasticity behavior to graphene. Also, the plasmonic behavior of these structures in response to various strains has been studied. As a result, plasmonic peaks varied up to about 2 eV under strain. Our findings reveal that these two structures have a large peak in the ultraviolet (UV) region and can be tuned by different applied strain. In addition, Ψ-graphene has smaller peaks in the IR and UV regions. Therefore, both Ψ-graphene and Ψ-graphane can be used as UV optomechanical sensors, whereas Ψ-graphene could be used as an infrared (IR) and visible sensor.

Graphical abstract: Hydrogenated Ψ-graphene as an ultraviolet optomechanical sensor

Article information

Article type
Paper
Submitted
06 Apr 2020
Accepted
22 Jun 2020
First published
10 Jul 2020
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2020,10, 26197-26211

Hydrogenated Ψ-graphene as an ultraviolet optomechanical sensor

M. Faghihnasiri, S. H. Mousavi, F. Shayeganfar, A. Ahmadi and J. Beheshtian, RSC Adv., 2020, 10, 26197 DOI: 10.1039/D0RA03104F

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