journal article·2022-01-12

Design of a Superhydrophobic Strain Sensor with a Multilayer Structure for Human Motion Monitoring

Wei-Chen Gao, Wei Wu, Chang-Zhou Chen, Hui Zhao, Yang Liu, Qing Li, Chong-Xing Huang, Guo-hua Hu, Shuang-Fei Wang, Dean Shi, Qun-Chao Zhang

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Abstract

A flexible strain sensor is of significant importance in wearable electronics since it can help monitor the physical signals from the human body. Among various strain sensors, the polyurethane (PU)-based ones have received widespread attention owing to their excellent toughness, large working range, and nice gas permeability. However, the hydrophobicity of these sensors is not good enough, which may affect their use life and sensitivity. In this work, a high-performance strain sensor composed of PU, reduced graphene oxide (rGO), polydopamine (PDA), and 1H,1H,2H,2H-perfluorodecane-thiol (PFDT) was designed and prepared. The results revealed that this PU/rGO/PDA/PFDT device possessed good superhydrophobicity with a water contact angle of 153.3°, a wide working strain range of 590%, and an outstanding gauge factor as high as 221 simultaneously. Because of these above advantages, the sensor worked effectively in detecting both subtle and large human movements (such as joint motion, finger motion, and vocal cord vibration) even in a high humidity environment. This strain sensor with high sensitivity, wide working range, and suitable modulus may have great potential in the field of flexible and wearable electronics in the near future.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Cardiovascular and Diving-Related Complications · Gas Sensing Nanomaterials and Sensors

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China

Department of Materials Science and Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR 999077, China

State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, China

Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning 530006, China

Guangxi Bossco Environmental Protection Technology Co., Ltd., Nanning, Guangxi 530004, China

University of Lorraine − CNRS, Laboratory of Reactions and Process Engineering (LRGP, UMR 7274), ENSIC, 1 rue Grandville, BP 20451, 54001 Nancy Cedex, France

Funding

State Key Laboratory of Biocatalysis and Enzyme Engineering · Natural Science Foundation of Guangxi Province · Guangxi Key Laboratory of Clean Pulp and Papermaking and Pollution Control, Guangxi University

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