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Can Raman Shift Be Used To Characterize the Mechanical Property of Graphene?

Yang, Kathleen L. and Lee, Jeong Oen and Choo, Hyuck and Yang, Fuqian (2018) Can Raman Shift Be Used To Characterize the Mechanical Property of Graphene? Journal of Physical Chemistry C, 122 (42). pp. 24467-24474. ISSN 1932-7447. https://resolver.caltech.edu/CaltechAUTHORS:20181023-080404993

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Abstract

Graphene has potential in a variety of applications, including strain-engineering electronics and sensors. In the heart of these applications is the strain dependence of electronic properties associated to the strain-induced Raman shift of graphene. In this work, we extend the relationship between the Raman shift of strained graphene and the mechanical strains for uniaxial tension to three-dimensional strain state and analyze the bending-induced Raman shift of orthotropic, monolayer graphene of rectangular and elliptic shapes, respectively, under the action of uniform pressure. The results show that the largest Raman redshift is present at the center of the graphene for both geometric configurations, and there exists Raman blueshift near the edges of the graphene. For both geometrical configurations, the contours of the Raman shift around the center are present in the shape of ellipse, which is dependent on the boundary conditions and geometrical configurations of the graphene. The geometric shape of the contours of the Raman shift likely cannot represent the anisotropic behavior in the mechanical deformation of graphene, and the initial state and constitutive relationship of graphene are needed to characterize the mechanical property of graphene via the strain-induced Raman shift.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1021/acs.jpcc.8b07996DOIArticle
ORCID:
AuthorORCID
Lee, Jeong Oen0000-0001-5060-8370
Choo, Hyuck0000-0002-8903-7939
Yang, Fuqian0000-0001-6277-3082
Additional Information:© 2018 American Chemical Society. Received: August 16, 2018; Revised: October 1, 2018; Published: October 2, 2018. K.L.Y. is grateful for the support of Soli Deo Gloria Fellowship through the SURF program at California Institute of Technology. F.Y. is grateful for the support by the NSF through the grant CMMI-1634540, monitored by Dr. Khershed Cooper. The authors declare no competing financial interest.
Funders:
Funding AgencyGrant Number
Caltech Summer Undergraduate Research Fellowship (SURF)UNSPECIFIED
NSFCMMI-1634540
Issue or Number:42
Record Number:CaltechAUTHORS:20181023-080404993
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20181023-080404993
Official Citation:Can Raman Shift Be Used To Characterize the Mechanical Property of Graphene? Kathleen L. Yang, Jeong Oen Lee, Hyuck Choo, and Fuqian Yang. The Journal of Physical Chemistry C 2018 122 (42), 24467-24474. DOI: 10.1021/acs.jpcc.8b07996
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:90341
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:23 Oct 2018 22:00
Last Modified:09 Mar 2020 13:18

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