Ultrasensitive and Highly Compressible Piezoresistive Sensor Based on Polyurethane Sponge Coated with a Cracked Cellulose Nanofibril/Silver Nanowire Layer

ACS Applied Materials & Interfaces
Shuaidi ZhangZhanhu Guo

Abstract

With the rapid development of flexible wearable electronics, a piezoresistive sensor with low detection limit and wide strain sensing range turns out to be a great challenge for its application in this field. Here, a cracked cellulose nanofibril/silver nanowire (CA) layer-coated polyurethane (PU) sponge was acquired through a simple dip-coating process followed by precompression treatment. The electrical conductivity and mechanical property of the conductive CA@PU sponge could be effectively tuned through changing the dip-coating number. As a piezoresistive sensor, the sponge exhibited the capability of detecting both small and large motions over a wide compression strain range of 0-80%. Based on the "crack effect", the sensor possessed a detection limit as low as 0.2% and the gauge factor [GF, GF = (Δ R/ R0)/ε, where Δ R, R0, and ε represent the instantaneous resistance change, original resistance, and strain applied, respectively] was as high as 26.07 in the strain range of 0-0.6%. Moreover, the "contact effect" enabled the sensor to be applicable for larger strain, and the GF decreased first and then became stable with increasing compression strain. In addition, frequency- and strain-dependent sensing performances were obser...Continue Reading

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Citations

Jan 17, 2020·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Songyue ZhangKaiyong Cai
Mar 11, 2020·Chemical Record : an Official Publication of the Chemical Society of Japan ... [et Al.]·Nan WenZhanhu Guo
Aug 14, 2020·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Songyue ZhangKaiyong Cai
Mar 9, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Lihong WangLijun Qu
Nov 28, 2020·Analytical Chemistry·Joshua M ZieglerReginald M Penner
May 10, 2021·Materials Science & Engineering. C, Materials for Biological Applications·Ying WangShiyu Fu
Jun 30, 2021·ACS Sensors·Kelcilene B R TeodoroDaniel S Correa
Jul 6, 2021·Research : a Science Partner Journal·Shengshun DuanBaoping Wang
Jul 30, 2021·ACS Applied Materials & Interfaces·Kirthika Senthil KumarHongliang Ren
Apr 16, 2019·ACS Applied Materials & Interfaces·Fan HuXiang Yang Liu
Jun 30, 2019·ACS Applied Materials & Interfaces·Guan-Jun ZhuZhong-Ming Li
Aug 29, 2019·ACS Applied Materials & Interfaces·Debarun SenguptaAjay Giri Prakash Kottapalli
Sep 15, 2020·ACS Applied Materials & Interfaces·Wanhui ShiQi Chen
Oct 8, 2021·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Shengping YaoJunhao Chu
Nov 17, 2021·ACS Biomaterials Science & Engineering·Yangzhi ZhuAli Khademhosseini
Nov 30, 2021·ACS Applied Materials & Interfaces·Wenjing MaChaobo Huang
Dec 18, 2021·ACS Applied Materials & Interfaces·Qijin Huang, Yong Zhu
Jan 18, 2022·Advanced Science·Yiyuan ZhangJun Yang

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