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Bioinspired Sandwich-structured Pressure Sensors Based on Graphene Oxide/hydroxyl Functionalized Carbon Nanotubes/bovine Serum Albumin Nanocomposites for Wearable Textile Electronics by Xiaohui Guo; Weiqiang Hong; Yunong Zhao; Tong Zhu; Hongjin Li; Guoqing Zheng; Jingyi Wang; Guopeng Tang; Jiaxu Cao; Yifan Wang; Jinyang Yang; Huishan Zhang; Deyi Zhou; Rui Feng; Decheng Xu; Qi Hong; Yaohua Xu is a Engineering article available to read on EtoBox.

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Herein, inspired by the tactile perception architecture of human skin, including the epidermis and touch receptor, skin-like flexible pressure sensors were fabricated via the assembly of a sandwich structure composed of an encapsulation layer (bionic epidermis), a piezoresistive sensing layer (bionic touch receptor), and a transducer layer. The piezoresistive sensing layer composed of graphene oxide/ hydroxyl functionalized carbon nanotubes/ bovine serum albumin (GO/CNTs/BSA) nanocomposites with wavy microstructures was fabricated using layerby-layer (LBL) self-assembly technology. The mechanisms of hydrogen bond and electrostatic interactions may improve the adhesion efficacy of the textile substrate with conductive nanomaterials. Based on the skin-like architecture for pressure sensing, the sensor exhibited the sensing characteristics, including wide pressuredetecting range (0~171 kPa), high sensitivity (2.456 kPa -1 ), rapid response/recovery time (225 ms and 50 ms), and outstanding durability (2000 cycles). Our work provide references for textile-based electronic devices that can be applied to intelligent robotics, wearable monitoring, and man-machine interaction.

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Author

Xiaohui Guo; Weiqiang Hong; Yunong Zhao; Tong Zhu; Hongjin Li; Guoqing Zheng; Jingyi Wang; Guopeng Tang; Jiaxu Cao; Yifan Wang; Jinyang Yang; Huishan Zhang; Deyi Zhou; Rui Feng; Decheng Xu; Qi Hong; Yaohua Xu

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Engineering (Physical Sciences)