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自粘液体金属通道贴片,带有尖端导向的合规合和皮肤生物电子产品的泄漏抑制

Sang-Woo Lee¹, Hyeonseok Song¹, Jinseo Kim¹

¹Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)

|September 12, 2025

概括

这项研究介绍了一种用于可穿戴生物电子的新型自附着液态金属通道 (S-LMC) 补丁. 与传统电极相比,S-LMC贴片提供了卓越的皮肤粘附性,信号保真性和耐用性.

科学领域:

生物电子学生物电子学
材料科学材料科学材料科学
生物医学工程生物医学工程

背景情况:

传统的皮肤电极面临脱水,粘合不良和刺激等挑战,限制了长期可穿戴生物电子应用.
现有的电极在运动过程中经常发生故障,从而损害了生物信号监测的准确性和设备的寿命.

研究的目的:

为可穿戴生物电子产品开发一种具有增强粘附性,信号质量和耐用性的新型皮肤接口电极贴片.
解决当前凝和干式电极的局限性,特别是关于运动工件和长期可穿戴性.

主要方法:

开发一种可自粘合的液态金属通道 (S-LMC) 补丁,集成加林斯坦微通道和微柱阵列,具有回入式几何形状.
整合一个通过孔的互连,用于直接的垂直信号传输,从而实现紧的系统集成.
在各种条件下评估皮肤粘附度,接触阻抗,信号真实性 (ECG) 和抗泄漏性.

主要成果:

该S-LMC贴片表现出强烈的,可重复使用的皮肤粘附性 (>60kPa) 和最小的皮肤刺激.
与商业的Ag/AgCl电极相比,实现了较低的接触阻抗 (7.35kΩ·cm2在10Hz) 和显著更高的ECG信号保真度 (>2×),特别是在运动中.
经过7天,长期粘附度>2.4倍,泄漏临界压力>2倍,表明液体金属的封闭性得到改善.

结论:

在可穿戴生物电子产品中,S-LMC补丁为运动弹性生物信号监控提供了一个有希望的解决方案.
它独特的回入式微型架构和集成设计克服了传统电极的局限性,实现了可扩展的系统集成.
这项技术为下一代皮肤符合的生物电子接口铺平了道路,提高了性能和用户舒适度.

关键词:

卫生监测健康监测液体金属电极是液体金属的电极.皮肤电极是一个皮肤电极.通过洞互连连接.可穿戴电子产品的电子产品.

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