journal article·2018-09-25

Highly Robust, Transparent, and Breathable Epidermal Electrode

You Jun Fan, Xin Li, Shuang Yang Kuang, Lei Zhang, Yang Hui Chen, Lu Liu, Ke Zhang, Si Wei Ma, Fei Liang, Tao Wu, Zhong Lin Wang, Guang Zhu

ACS Nano· Volume 12· Issue 9
Publisher page

Abstract

Recently emerged electronic skins with applications in on-body sensing and human–machine interfaces call for the development of high-performance skin-like electrodes. In this work, we report a highly robust, transparent, and breathable epidermal electrode composed of a scaffold-reinforced conductive nanonetwork (SRCN). Solution-dispersed Ag nanowires, through facile vacuum filtration, are embedded into a scaffold made of polyamide nanofibers. Optical transmittance of 84.9% at 550 nm wavelength is achieved at a significantly low sheet resistance of 8.2 Ω sq–1. The resistance of the SRCN only slightly increases by less than 0.1% after being bent for 3000 cycles at the maximum curvature of 300 m–1 and by less than 1.5% after being dipped in saline solution for 2500 cycles. The excellent robustness is attributed to the reinforcement from the nanofiber-based scaffold as a backbone that maintains the connections among the Ag nanowires by undertaking most of the loaded stress. The SRCN not only forms tight and conformal bonding with the target surface but also allows the evaporation of perspiration, making it suitable as an epidermal electrode for long-time use. Furthermore, fine and clean-cut circuit patterns with a line width on the micrometer scale can be readily prepared, paving the way for fabricating sophisticated functional electronic skins.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Nanomaterials and Printing Technologies · Tactile and Sensory Interactions

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China

School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China

Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China

Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China

New Materials Institute, University of Nottingham Ningbo China, Ningbo 315100, China

School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States

Department of Mechanical, Materials and Manufacturing Engineering, The University of Nottingham Ningbo China, Ningbo 315100, China

Funding

Ministry of Science and Technology of the People's Republic of China · Natural Science Foundation of Beijing Municipality · National Natural Science Foundation of China · Central Committee of the Communist Party of China

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