A Biaxial Strain Sensor Using a Single MoS2 Grating
In this paper, we report a new type of MoS 2 -based grating sensor for in-plane biaxial strain gauges with a precision limit of ~ 1‰. The MoS 2 grating is numerically simulated with different biaxial strains up to 5%. Our first-principles calculations reveal that the strain sensitivity of the MoS 2...
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Published in | Nanoscale research letters Vol. 16; no. 1; p. 31 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
New York
Springer US
10.02.2021
Springer Nature B.V SpringerOpen |
Subjects | |
Online Access | Get full text |
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Summary: | In this paper, we report a new type of MoS
2
-based grating sensor for in-plane biaxial strain gauges with a precision limit of ~ 1‰. The MoS
2
grating is numerically simulated with different biaxial strains up to 5%. Our first-principles calculations reveal that the strain sensitivity of the MoS
2
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 MoS
2
-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. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1556-276X 1931-7573 1556-276X |
DOI: | 10.1186/s11671-021-03493-3 |