电极
材料科学
纳米技术
共形矩阵
生物医学工程
皮肤刺激
计算机科学
复合材料
工程类
皮肤病科
医学
化学
物理化学
作者
Maria A. Menke,Braden M. Li,Jialiang Wang,Leonard J. Mueller,Robin Dietrich,Shijie Zhou,Nancy Kelley‐Loughnane,Patrick B. Dennis,Jason T. Boock,Joseph E. Estevez,Christopher E. Tabor,Jessica L. Sparks
标识
DOI:10.1002/adhm.202301811
摘要
Next generation on-skin electrodes will require soft, flexible, and gentle materials to provide both high-fidelity sensing and wearer comfort. However, many commercially available on-skin electrodes lack these key properties due to their use of rigid hardware, harsh adhesives, uncomfortable support structures, and poor breathability. To address these challenges, this work presents a new device paradigm by joining biocompatible electrospun spider silk with printable liquid metal to yield an incredibly soft and scalable on-skin electrode that is strain-tolerant, conformable, and gentle on-skin. These electrodes, termed silky liquid metal (SLiM) electrodes, are found to be over five times more breathable than commercial wet electrodes, while the silk's intrinsic adhesion mechanism allows SLiM electrodes to avoid the use of harsh artificial adhesives, potentially decreasing skin irritation and inflammation over long-term use. Finally, the SLiM electrodes provide comparable impedances to traditional wet and other liquid metal electrodes, offering a high-fidelity sensing alternative with increased wearer comfort. Human subject testing confirmed the SLiM electrodes ability to sense electrophysiological signals with high fidelity and minimal irritation to the skin. The unique properties of the reported SLiM electrodes offer a comfortable electrophysiological sensing solution especially for patients with pre-existing skin conditions or surface wounds.
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