EMIE 2022
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Research and Realization of Flexible Piezoelectric Sensors based on MoS2 Nanosheets-Films

Conference: EMIE 2022 - The 2nd International Conference on Electronic Materials and Information Engineering
04/15/2022 - 04/17/2022 at Hangzhou, China

Proceedings: EMIE 2022

Pages: 5Language: englishTyp: PDF

Authors:
Wang, Bing; Dong, Huajian; Ji, Ruichen; Gu, Shanshan; Chen, Weina; Ge, Shanshan (Jinling Institute of Technology, Nanjing, China)
Wang, Yizhi (Jinling Institute of Technology, Nanjing, China & Fujian Key Laboratory of Functional Marine Sensing Materials, Minjiang University, Fuzhou, China)
Zhang, Yang (Fujian Key Laboratory of Functional Marine Sensing Materials, Minjiang University, Fuzhou, China & Fujian Engineering and Research Center of New Chinese Lacquer Materials and Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, Minjiang University, Fuzhou, China)

Abstract:
Comfortability and biocompatibility (BC) of smart wearable devices are the high-profile indexes in recent years. Molybdenum Disulfide (MoS2), one of typical Transition-metal Dichalcogenides (TMDCs), is proved with piezoelectric property in the form of 2D few- or single-layer nanosheets. Based on this prosperous property, firstly the preparation process of MoS2 nano-sheet film was improved to obtain changeable flexibility based on former research; after that, a novel cross-channel inner structure of flexible sensor shell was proposed and realized via 3D printing technology. With the proposed one-shot design, the cascade of piezoelectric channels was realized to obtain wider frequency band. Besides, the filling process of flexible piezoelectric material into the designed shell was proposed and realized as well. After experiments, the prepared sensor is proved with excellent flexibility, with a tensile strength up to 9MPa, and Shore hardness up to 30 °C. The excellent strength and limpness allow the designed sensor to be embedded into flexible instrument and daily wearable devices, such as smart insoles for medical diagnosis purpose.