한빛사논문
Saswat Mishra1,*, Yun-Soung Kim1,*, Jittrapol Intarasirisawat2, Young-Tae Kwon1, Yongkuk Lee3, Musa Mahmood1, Hyo-Ryoung Lim1, Robert Herbert1, Ki Jun Yu4, Chee Siang Ang2 and Woon-Hong Yeo1,5,6,†
1George W. Woodruff School of Mechanical Engineering and Institute for Electronics and Nanotechnology, Georgia Institute of Technology, Atlanta, GA 30332, USA.
2School of Engineering and Digital Arts, Jennison Building, University of Kent, Canterbury, Kent CT2 7NT, UK.
3Department of Biomedical Engineering, Wichita State University, Wichita, KS 67260, USA.
4School of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, Republic of Korea.
5Parker H. Petit Institute for Bioengineering and Biosciences, Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA.
6Flexible Wearable Electronics Advance Research Program, Institute for Materials, and Neural Engineering Center, Georgia Institute of Technology, Atlanta, GA 30332, USA.
†Corresponding author.
*These authors contributed equally to this work.
Abstract
Recent advancements in electronic packaging and image processing techniques have opened the possibility for optics-based portable eye tracking approaches, but technical and safety hurdles limit safe implementation toward wearable applications. Here, we introduce a fully wearable, wireless soft electronic system that offers a portable, highly sensitive tracking of eye movements (vergence) via the combination of skin-conformal sensors and a virtual reality system. Advancement of material processing and printing technologies based on aerosol jet printing enables reliable manufacturing of skin-like sensors, while the flexible hybrid circuit based on elastomer and chip integration allows comfortable integration with a user’s head. Analytical and computational study of a data classification algorithm provides a highly accurate tool for real-time detection and classification of ocular motions. In vivo demonstration with 14 human subjects captures the potential of the wearable electronics as a portable therapy system, whose minimized form factor facilitates seamless interplay with traditional wearable hardware.
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