Highly Breathable and Stretchable Strain Sensors with Insensitive Response to Pressure and Bending. (25th January 2021)

• Record Type: Journal Article
• Authors: Liu, Zekun; Zheng, Yan; Jin, Lu; Chen, Kaili; Zhai, Heng; Huang, Qiyao; Chen, Zhongda; Yi, Yangpeiqi; Umar, Muhammad; Xu, Lulu; Li, Gang; Song, Qingwen; Yue, Pengfei; Li, Yi; Zheng, Zijian
• Is Part Of: Advanced functional materials. Volume 31:Number 14(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-01-25
• Subjects: breathability -- copper deposition -- pressure and bending insensitive -- strain sensor -- wearable electronics; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adfm.202007622
• Languages: English
• ISSNs: 1616-301X

Abstract

Abstract: Wearable tensile strain sensors have aroused substantial attention on account of their exciting applications in rebuilding tactile inputs of human and intelligent robots. Conventional such devices, however, face the dilemma of both sensitive response to pressure and bending stimulations, and poor breathability for wearing comfort. In this paper, a breathable, pressure and bending insensitive strain sensor is reported, which presents fascinating properties including high sensitivity and remarkable linearity (gauge factor of 49.5 in strain 0–100%, R 2 = 99.5%), wide sensing range (up to 200%), as well as superior permeability to moisture, air, and water vapor. On the other hand, it exhibits negligible response to wide‐range pressure (0–100 kPa) and bending (0–75%) inputs. This work provides a new route for achieving wearing comfortable, high‐performance, and anti‐jamming strain sensors. Abstract : A highly breathable tensile strain sensor with an insensitive response to pressure and bending is developed through polymer‐assisted metal deposition and novel embroidery techniques. The strain sensor shows fast response, superior durability, high sensitivity, and prominent linearity throughout the broad detection range. The all fiber‐structure sensor possesses remarkable breathability, indicating great potential in the application of body sensing networks.