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김정Jung Kim

KAIST

Sci. Adv., Jan 19 2024, 10 (3) eadk5260 | https://doi.org/10.1126/sciadv.adk5260 Skin preparation-free, stretchable microneedle adhesive patches for reliable electrophysiological sensing and exoskeleton robot control

Heesoo Kim^1†, Juhyun Lee^1†, Ung Heo², Dhileep Kumar Jayashankar³, Karen-Christian Agno¹, Yeji Kim⁴, Choong Yeon Kim¹, Youngjun Oh¹, Sang-Hyuk Byun¹, Bohyung Choi¹, Hwayeong Jeong², Woon-Hong Yeo^5,6,7,8, Zhuo Li⁹, Seongjun Park⁴, Jianliang Xiao^3*, Jung Kim^2*, Jae-Woong Jeong^1,10*

¹School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.

²Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.

³Department of Mechanical Engineering, University of Colorado Boulder, Boulder, CO 80309, USA.

⁴Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.

⁵IEN Center for Wearable Intelligent Systems and Healthcare at the Institute for Electronics and Nanotechnology, Georgia Institute of Technology, Atlanta, GA 30332, USA.

⁶George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.

⁷Wallace H. Coulter Department of Biomedical Engineering, Georgia Tech and Emory University, Atlanta, GA 30332, USA.

⁸Parker H. Petit Institute for Bioengineering and Biosciences, Institute for Materials, Neural Engineering Center, Institute for Robotics and Intelligent Machines, Georgia Institute of Technology, Atlanta, GA 30332, USA.

⁹Department of Material Science, Fudan University, Shanghai 200433, China.

¹⁰KAIST Institute for Health Science and Technology, Daejeon 34141, Republic of Korea.

^*corresponding authors: J.- W.J.; J.K.; J.X.

^†these authors contributed equally to this work.

Abstract

High-fidelity and comfortable recording of electrophysiological (EP) signals with on-the-fly setup is essential for health care and human-machine interfaces (HMIs). Microneedle electrodes allow direct access to the epidermis and eliminate time-consuming skin preparation. However, existing microneedle electrodes lack elasticity and reliability required for robust skin interfacing, thereby making long-term, high-quality EP sensing challenging during body movement. Here, we introduce a stretchable microneedle adhesive patch (SNAP) providing excellent skin penetrability and a robust electromechanical skin interface for prolonged and reliable EP monitoring under varying skin conditions. Results demonstrate that the SNAP can substantially reduce skin contact impedance under skin contamination and enhance wearing comfort during motion, outperforming gel and flexible microneedle electrodes. Our wireless SNAP demonstration for exoskeleton robot control shows its potential for highly reliable HMIs, even under time-dynamic skin conditions. We envision that the SNAP will open new opportunities for wearable EP sensing and its real-world applications in HMIs.

논문정보

형식Research article
게재일2024년 01월 (BRIC 등록일 2024-03-13)
연구진국내(교신)+국외 연구진
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