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Your search keyword '"Qing, Yongquan"' showing total 153 results
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153 results on '"Qing, Yongquan"'

40. Micro-/nanofiber-coupled superhydrophobic and conductive textile for underwater wearable strain sensors with full-scale human motion detection ability.

Author

Ma, Junchi, Qing, Yongquan, Song, Haoyang, Yao, Yuxuan, Xu, Xinyu, Long, Cai, Liu, Niu, Li, Hengjun, and Liu, Changsheng

Abstract

Underwater sensing is important for healthcare and sports management monitoring in extreme water environments, where traditional strain sensors often fail. Therefore, we fabricated a superhydrophobic nanocoating wearable textile composite (SNWTC) strain sensor with exceptional liquid repellency, excellent strain sensing performance, and sensing stability in water environments. The conductive pathways in terms of direct overlapping and indirect contact of fluorinated MWCNTs in micro-/nanofiber-coupled network structures endowed the SNWTC surface with excellent conductivity. Also, the superhydrophobicity of the SNWTC was maintained after a series of mechanical and corrosion damage tests due to the synergistic enhancement between epoxy–silicone oligomers/polydimethylsiloxane and textile fibers. Importantly, the SNWTC strain sensor simultaneously achieved a wide sensing range (over 100% strain), superior sensitivity (a gauge factor of 949.5), low detection limit (strain ∼0.2%), and fast response time (∼100 ms) in air. Moreover, it could also efficiently monitor full-scale human motions in air and underwater with equally excellent sensitivity. Overall, the proposed textile composite strain sensor looks promising for divers' extraordinary ocean exploration. [ABSTRACT FROM AUTHOR]

Published
2023
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49. High‐Performance, Superhydrophobic, and Wearable Strain Sensor for Amphibious Human Motion Detection.

Author

Ma, Junchi, Qing, Yongquan, Song, Haoyang, Yao, Yuxuan, Xu, Xinyu, Long, Cai, Cui, Miao, Han, Mengxue, and Liu, Changsheng

Subjects
*STRAIN sensors, *WEARABLE technology, *INTELLIGENT sensors, *ELECTRONIC equipment, *JOINTS (Anatomy), *MECHANICAL abrasion
Abstract

Wearable strain sensors with water repellency can enable the monitoring of human health and body motions when in contact with water; however, realization of such sensors with both high sensitivity and dynamic wetting behaviors simultaneously in air and underwater environment is a challenging task. Herein, a superhydrophobic, breathable, and wearable microfiber composite (SBWMC) strain sensor is fabricated using a stearic acid functionalized multi‐walled carbon nanotubes/TiO2 modified textile. The resultant network of hierarchical micro/nano structure endows the SBWMC surface with excellent conductivity and water damage prevention, and it maintains superhydrophobicity after mechanical abrasion, illumination, and water soaking. More importantly, the SBWMC strain sensor simultaneously achieves the wide sensing ranges (strain over 100%) and superior sensitivity (gauge factor of 461.5) in air, and it can efficiently monitor real‐time bending of human joints in air. Compared to traditional sensors, this SBWMC strain sensor also exhibits superior sensitivity in underwater environment, even comparable to that in air. Undoubtedly, such smart sensor offers broad application prospects in next generation of wearable electronic devices in extremely humid environments. [ABSTRACT FROM AUTHOR]

Published
2023
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