Direct Laser Processing and Functionalizing PI/PDMS Composites for an On‐Demand, Programmable, Recyclable Device Platform

Author:

Zhu Jia123,Xiao Yang1,Zhang Xianzhe3,Tong Yao4,Li Jiaying1,Meng Ke1,Zhang Yingying4,Li Jiuqiang4,Xing Chenghao3,Zhang Senhao4,Bao Benkun4,Yang Hongbo4,Gao Min1,Pan Taisong1,Liu Shangbin3,Lorestani Farnaz3,Cheng Huanyu3ORCID,Lin Yuan15

Affiliation:

1. School of Material and Energy University of Electronic Science and Technology of China Chengdu 610054 China

2. Yangtze Delta Region Institute (Quzhou) University of Electronics Science and Technology of China Quzhou 324000 China

3. Department of Engineering Science and Mechanics The Pennsylvania State University University Park PA 16802 USA

4. Suzhou Institute of Biomedical Engineering and Technology Chinese Academy of Science Suzhou 215011 P. R. China

5. Medico‐Engineering Cooperation on Applied Medicine Research Center University of Electronics Science and Technology of China Chengdu 610054 China

Abstract

AbstractSkin‐interfaced high‐sensitive biosensing systems to detect electrophysiological and biochemical signals have shown great potential in personal health monitoring and disease management. However, the integration of 3D porous nanostructures for improved sensitivity and various functional composites for signal transduction/processing/transmission often relies on different materials and complex fabrication processes, leading to weak interfaces prone to failure upon fatigue or mechanical deformations. The integrated system also needs additional adhesive to strongly conform to the human skin, which can also cause irritation, alignment issues, and motion artifacts. This work introduces a skin‐attachable, reprogrammable, multifunctional, adhesive device patch fabricated by simple and low‐cost laser scribing of an adhesive composite with polyimide powders and amine‐based ethoxylated polyethylenimine dispersed in the silicone elastomer. The obtained laser‐induced graphene in the adhesive composite can be further selectively functionalized with conductive nanomaterials or enzymes for enhanced electrical conductivity or selective sensing of various sweat biomarkers. The possible combination of the sensors for real‐time biofluid analysis and electrophysiological signal monitoring with RF energy harvesting and communication promises a standalone stretchable adhesive device platform based on the same material system and fabrication process.

Funder

Fundamental Research Funds for the Central Universities

National Science Foundation

National Institutes of Health

National Natural Science Foundation of China

Publisher

Wiley

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