DataVXACS Applied Materials & InterfacesPaper
journal article·2023-05-10

Highly Stable Liquid Metal Conductors with Superior Electrical Stability and Tough Interface Bonding for Stretchable Electronics

Shengding Wang, Chao Liu, Jinyun Liu, Shiying Li, Feng Xu, Dan Xu, Wuxu Zhang, Yuanzhao Wu, Jie Shang, Yiwei Liu, Run-Wei Li

ACS Applied Materials & Interfaces· Volume 15· Issue 18
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Source abstract

Abstract

Ga-based liquid metal stretchable conductors have recently gained interest in flexible electronic devices such as electrodes, antennas, and sensors. It is essential to maintain electrical stability under strain or cyclic strain for reliable data acquisition and exhibit tough interfacial bonding between liquid metal and polymers to prevent performance loss and device failure. Herein, a highly stable conductor with superior electrical stability and tough interface bonding is introduced by casting curable polymers and a peeling-activated process from liquid metal particles. Based on the compensating effect of liquid metal, similar to the recharge relationship of water between rivers and lakes in nature, the conductor is not only strain-insensitive (Δ R / R 0 < 10% for 100% strain) but also immune to cyclic deformation (Δ R / R 0 < 7% with 5000 stretching cycles at 50% strain). Embedding liquid metal within the elastomer to create stretchable conductors effectively improves interfacial adhesion properties (the fluid–solid interfacial adhesion force increases from 0.48 to 0.62 mN/mm 2 ). The constructed tough interface could even withstand sonication treatment. Finally, by combining strategies in material design and fabrication, an integrated array composed of vertical interconnect access and robust electrodes is fabricated, which simultaneously holds tough interfacial bonding with the upper and lower layers.
Source: openalex_inverted_index · Quality: baseline

Research context

Polymers

OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Advanced Materials and Mechanics · Electrospun Nanofibers in Biomedical Applications

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

Affiliations

CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, P. R. China

Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, P. R. China

College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China

School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, People’s Republic of China

Funding

Primary Research and Development Plan of Zhejiang Province · K. C. Wong Education Foundation · China Postdoctoral Science Foundation · Ningbo Municipal Bureau of Science and Technology · Youth Innovation Promotion Association of the Chinese Academy of Sciences · National Natural Science Foundation of China · Chinese Academy of Sciences · Natural Science Foundation of Zhejiang Province · Zhejiang Provincial Basic Public Welfare Research Project · Pioneer and Leading Goose Research and Development Program of Zhejiang

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