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- Title
Compressible and sensitive aerogels derived from graphene/waste paper for wearable pressure sensor.
- Authors
Li, Ang; Cui, Ce; Wang, Weijie; Zhang, Yue; Zhai, Jianyu; Guo, Ronghui; Cheng, Cheng; Qin, Wenfeng; Ren, Erhui; Xiao, Hongyan; Zhou, Mi; Zhang, Jinwei
- Abstract
Biomass-derived 3D and porous conductive aerogels have been considered as potential environmentally friendly material for wearable pressure sensors. However, the development of a simple strategy for the fabrication of biomass-derived aerogels with the properties of wide-sensing range, high sensitivity, and low detection is still significantly challenging. Here, graphene was incorporated into waste paper to prepare graphene-coated waste paper aerogel (GWA) using a simple "filtration-oven drying" method under atmospheric pressure. The GWA was further annealed to obtain carbonized graphene-coated waste paper aerogel (C-GWA) for low density and excellent resilience. The C-GWA shows 3D porous structure formed by interpenetrated fibers and low density (25 mg/cm3). The pressure sensor based on C-GWA exhibits wide detection working range (0–132 kPa), ultra-low detection limit (2.5 Pa), and high sensitivity of (31.6 kPa−1). In addition, the pressure sensor can be used to detect human motions including the pulse of the human body, cheek blowing, and bending of human joints. The result indicates that the C-GWA-based sensor shows great potential for wearable electronic products.
- Subjects
WASTE paper; PRESSURE sensors; WEARABLE technology; AEROGELS; GRAPHENE; DRYING
- Publication
Journal of Materials Science: Materials in Electronics, 2022, Vol 33, Issue 7, p4388
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-021-07631-6