NDLI: A highly sensitive wearable flexible strain sensor based on polycrystalline $MoS_{2}$ thin film

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A highly sensitive wearable flexible strain sensor based on polycrystalline $MoS_{2}$ thin film

Content Provider	Scilit
Author	Rana, Vaibhav Gangwar, Pratisha Meena, Jagan Singh Ramesh, Akhil K. Bhat, Kunchinadka Narayana Das, Samaresh Singh, Pushpapraj
Copyright Year	2020
Description	Journal: Nanotechnology The present study investigates the piezoresistive property of poly-crystalline MoS2 film for strain sensing applications. The gauge factor (GF) of flexible MoS2 device (MoS2/PET) has been calculated to be 102±5 in the stress ranging from ~7 MPa to ~14 MPa. In addition, to improve the sensing stress range, the flexible strain sensors are encapsulated by SU-8. Moreover, the effect of encapsulation layer thickness is reflected in the GF, which attributed to the shifting of the neutral axis. However, the calculated GF is constant in higher stress range, 80±2 and 12±1 for 2 μm and 10 μm thick SU-8, respectively. Herein, we have reported a cost-effective and scalable approach to fabricate large-area poly-crystalline MoS2 based flexible sensors for a wider stress range. The encapsulated devices remained undistorted and intact for stress values beyond 14 MPa. Further, we have demonstrated the durability test of the fabricated sensors with body movements such as hand gestures for all the three types of strain sensors.
Related Links	https://iopscience.iop.org/article/10.1088/1361-6528/ab9970/pdf
ISSN	09574484
e-ISSN	13616528
DOI	10.1088/1361-6528/ab9970
Journal	Nanotechnology
Issue Number	38
Volume Number	31
Language	English
Publisher	IOP Publishing
Publisher Date	2020-06-04
Access Restriction	Open
Subject Keyword	Journal: Nanotechnology Poly-crystalline Mos2
Content Type	Text
Resource Type	Article
Subject	Chemistry Nanoscience and Nanotechnology Mechanics of Materials Mechanical Engineering Bioengineering Electrical and Electronic Engineering

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