期刊
ACS APPLIED MATERIALS & INTERFACES
卷 14, 期 11, 页码 13713-13721出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.1c25206
关键词
stretchable electronics; epidermal electronics; liquid metal; stretchable conductor; permeable conductor
资金
- Key Research and Development Program of the Jiangsu Provincial Department of Science and Technology of China [BE2019002]
- High-Level Entrepreneurial and Innovative Talents Program of Jiangsu Province
A facile physical deposition approach is established to create a liquid metal micromesh, which exhibits low resistance, high stretchability, and excellent durability, allowing for comfortable and long-term wearing. The stretchable and permeable liquid metal conductor shows promising potentials in next-generation epidermal electronics.
Stretchable electronics allow functional devices to integrate with human skin seamlessly in an emerging wearable platform termed epidermal electronics. Compliant conductors represent key building components for functional devices. Among the various candidates, gallium-based liquid metals stand out with metallic conductivity and inherent deformability. Currently, the widespread applications of liquid metals in epidermal electronics are hindered by the low steam permeability and hence unpleasant wearing perceptions. In this study, a facile physical deposition approach is established to create a liquid metal micromesh over an elastomer sponge, which exhibits low sheet resistance (similar to 0.5 Omega sq(-1) ), high stretchability (400% strain), and excellent durability. The porous micromesh shows textile-level permeability to achieve long-term wearing comfort. The conformal interaction of the liquid metal micromesh with the skin gives rise to a low contact impedance. An integrated epidermal sensing sleeve is demonstrated as a human-machine interface to distinguish different hand gestures by recording muscle contractions. The reported stretchable and permeable liquid metal conductor shows promising potentials in next-generation epidermal electronics.
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