유기준 (연세대학교) | 한빛사논문 > 한빛사

한빛사논문

조회310

연세대학교

CV File 343 kb

Sci. Adv., Sep 20 2024, 10 (38) eadr1099 | https://doi.org/10.1126/sciadv.adr1099 Extremely durable electrical impedance tomography-based soft and ultrathin wearable e-skin for three-dimensional tactile interfaces

Kyubeen Kim ^1,†, Jung-Hoon Hong ^1,†, Kyubin Bae^2,†, Kyounghun Lee ³, Doohyun J Lee ¹, Junsu Park ⁴, Haozhe Zhang ⁵, Mingyu Sang ¹, Jeong Eun Ju¹, Young Uk Cho ⁶, Kyowon Kang ¹, Wonkeun Park ², Suah Jung ¹, Jung Woo Lee ⁷, Baoxing Xu ⁵, Jongbaeg Kim ², Ki Jun Yu ^1,8,9

¹Functional Bio-integrated Electronics and Energy Management Lab, School of Electrical and Electronic Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea.

²School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea.

³Sciospec GmbH, Leipziger Str. 43b, Bennewitz 04828, Germany.

⁴Robotics Lab, Woowa Brothers Corp., Seoul 05544, Republic of Korea.

⁵Department of Mechanical and Aerospace Engineering, University of Virginia, Charlottesville, VA 22904, USA.

⁶Center for Emergent Matter Science (CEMS), RIKEN, The Institute of Physical and Chemical Research, Saitama 351-0198, Japan.

⁷Department of Biomedical & Robotics Engineering, Incheon National University, Yeonsu-gu, Incheon 22012, South Korea.

⁸Department of Electrical and Electronic Engineering, YU-Korea Institute of Science and Technology (KIST) Institute, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea.

⁹The Biotech Center, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea.

^*Corresponding authors: Jongbaeg Kim, Ki Jun Yu

^†These authors contributed equally to this work.

Abstract

In the rapidly evolving field of human-machine interfaces (HMIs), high-resolution wearable electronic skin (e-skin) is essential for user interaction. However, traditional array-structured tactile interfaces require increased number of interconnects, while soft material-based computational methods have limited functionalities. Here, we introduce a thin and soft e-skin for tactile interfaces, offering high mapping capabilities through electrical impedance tomography (EIT). We employed an organic/inorganic hybrid structure with simple, cost-effective fabrication processes, ensuring flexibility and stability. The conductive and stretchable sensing domain includes a micropatterned multiwall carbon nanotube and elastomer composite. The skin-like tactile interface effectively detects pressure-induced conductivity changes, offering superior spatiotemporal resolution with fewer interconnects (pixel/interconnects >57). This EIT-based tactile interface discerns external pressures to a submillimeter degree and vertical deformations of a few hundred micrometers. It sustains stable functions under external damage or environmental changes, confirming its suitability for persistent wearable use. We demonstrate practical applications in real-time HMIs: handwriting recognition and drone control.

논문정보

형식Research article
게재일2024년 09월 (BRIC 등록일 2024-10-07)
연구진국내(교신)+국외 연구진
분야

댓글 작성 로그인

CV 열람하기

연락처 보기