Strain Engineering for Pseudo-Magnetic Fields in Graphene

Manlin Luo, Hao Sun, Zhipeng Qi, Kunze Lu, Melvina Chen, Dongho Kang, Youngmin Kim, Daniel Burt, Xuechao Yu, Chongwu Wang, Young Duck Kim, Hong Wang, Qi Jie Wang, Donguk Nam

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The potential for establishing energy gaps by pseudo-magnetic fields in strain-engineered graphene has sparked much interest recently. However, the limited sizes of induced pseudo-magnetic fields and the complicated platforms for straining graphene have thus far prevented researchers from harnessing the unique pseudo-magnetic fields in optoelectronic devices. In this work, we present an experimental demonstration of triaxially strained suspended graphene structures capable of obtaining quasi-uniform pseudo-magnetic fields over a large scale. The novel metal electrode design functions as both stressors and current injectors. We also propose a hybrid laser structure employing a 2D photonic crystal and triaxially strained graphene as an optical cavity and gain medium, respectively.

Original languageEnglish
Title of host publication2D Photonic Materials and Devices V
EditorsArka Majumdar, Carlos M. Torres, Hui Deng
PublisherSPIE
ISBN (Electronic)9781510648777
DOIs
Publication statusPublished - 2022
Event2D Photonic Materials and Devices V 2022 - Virtual, Online
Duration: 20 Feb 202224 Feb 2022

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12003
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference2D Photonic Materials and Devices V 2022
CityVirtual, Online
Period20/02/2224/02/22

Bibliographical note

Publisher Copyright:
© 2022 SPIE.

Keywords

  • Strain engineering
  • graphene
  • laser structure
  • optoelectronic devices
  • pseudo-magnetic fields

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