A Biaxial Strain Sensor Using a Single MoS2 Grating

Junxiang Xiang; Wenhui Wang; Lantian Feng; Chao Feng; Meng Huang; Ping Liu; XiFeng Ren; Bin Xiang

doi:10.1186/s11671-021-03493-3

Nanoscale Research Letters (Feb 2021)

A Biaxial Strain Sensor Using a Single MoS2 Grating

Junxiang Xiang,
Wenhui Wang,
Lantian Feng,
Chao Feng,
Meng Huang,
Ping Liu,
XiFeng Ren,
Bin Xiang

Affiliations

Junxiang Xiang: Hefei National Research Center for Physical Sciences at the Microscale, Department of Materials Science and Engineering, CAS Key Lab of Materials for Energy Conversion, University of Science and Technology of China
Wenhui Wang: Research Laboratory for Quantum Materials, Singapore University of Technology and Design
Lantian Feng: Key Laboratory of Quantum Information, University of Science and Technology of China, Chinese Academy of Sciences
Chao Feng: Hefei National Research Center for Physical Sciences at the Microscale, Department of Materials Science and Engineering, CAS Key Lab of Materials for Energy Conversion, University of Science and Technology of China
Meng Huang: Hefei National Research Center for Physical Sciences at the Microscale, Department of Materials Science and Engineering, CAS Key Lab of Materials for Energy Conversion, University of Science and Technology of China
Ping Liu: Hefei National Research Center for Physical Sciences at the Microscale, Department of Materials Science and Engineering, CAS Key Lab of Materials for Energy Conversion, University of Science and Technology of China
XiFeng Ren: Key Laboratory of Quantum Information, University of Science and Technology of China, Chinese Academy of Sciences
Bin Xiang: Hefei National Research Center for Physical Sciences at the Microscale, Department of Materials Science and Engineering, CAS Key Lab of Materials for Energy Conversion, University of Science and Technology of China

DOI: https://doi.org/10.1186/s11671-021-03493-3
Journal volume & issue: Vol. 16, no. 1
pp. 1 – 7

Abstract

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Abstract In this paper, we report a new type of MoS2-based grating sensor for in-plane biaxial strain gauges with a precision limit of ~ 1‰. The MoS2 grating is numerically simulated with different biaxial strains up to 5%. Our first-principles calculations reveal that the strain sensitivity of the MoS2 reflectance spectrum can be considered an additional strain sensor integrated with the grating structure, enabling the mapping of in-plane biaxial strains. Our experimental studies on a prototype MoS2-grating sensor further confirm that a strain component perpendicular to the grating period can cause intensity peak shifts in the grating’s first-order diffraction patterns. This work opens a new path towards the sensing of in-plane biaxial strain within a single-grating device. Our new approach is applicable for other materials that have predictable reflectance response under biaxial strains and the capacity to form a two-dimensional single-crystal layer.

Published in Nanoscale Research Letters

ISSN: 1931-7573 (Print); 1556-276X (Online)
Publisher: SpringerOpen
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.springer.com/journal/11671

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