https://scholar.dgist.ac.kr/handle/20.500.11750/9935 2026-04-04T11:17:38Z 2026-04-04T11:17:38Z Jeong, Jinwoong Kim, Yongwoo Lee, Sanghoon https://scholar.dgist.ac.kr/handle/20.500.11750/57823 2025-07-25T03:36:49Z 2024-07-15T15:00:00Z

Title: Optimization of Polymeric Microneedle Electrode for High-Quality EMG recording Author(s): Jeong, Jinwoong; Kim, Yongwoo; Lee, Sanghoon Abstract: This paper proposes the optimization of polyimide microneedle electrode using a 3D print double molding fabrication. Various shapes (circle, triangle, square, star, and hexagon) of microneedles are investigated by changing printing angles and double molding process. Aspect ratio, insertion force, and break point of the fabricated microneedles are investigated to maximize penetration capacity. Also, muscle signals were obtained using optimized microneedle electrodes to distinguish hand gesture. © 2024 IEEE.

2024-07-15T15:00:00Z Cho, Youngjun Shin, Heejae Kang, Minseok Kim, Yongwoo Jeong, Jinwoong Lee, Sanghoon https://scholar.dgist.ac.kr/handle/20.500.11750/47925 2025-07-25T03:30:46Z 2023-03-30T15:00:00Z

Title: Peripheral Neuromodulation for Bionic limbs and Electroceuticals Author(s): Cho, Youngjun; Shin, Heejae; Kang, Minseok; Kim, Yongwoo; Jeong, Jinwoong; Lee, Sanghoon Abstract: Modulation of nerve signals in the peripheral nervous system (PNS) is a promising research field for interfacing with bionic limbs and for therapeutic applications. To achieve this, peripheral neural interfaces should be improved in terms of biocompatibility and functionality of recording and stimulation. This presentation introduces shape memory polymer neural interfaces, which have been developed for use in bionic limbs and bladder modulation. Furthermore, this paper introduces triboelectric neurostimulators for modulating peripheral nerves. © 2023 IEEE.

2023-03-30T15:00:00Z Park, Jaeu Jeong, Jinwoong Kim, Donggun Pak, Changsik Hong, Joonpio Min, Sungjoon Kim, Byungchae Lee, Sanghoon https://scholar.dgist.ac.kr/handle/20.500.11750/47678 2025-07-25T02:40:44Z 2023-07-24T15:00:00Z

Title: Flexible & Stretchable EMG Sensor for Lower Extremity Amputee Author(s): Park, Jaeu; Jeong, Jinwoong; Kim, Donggun; Pak, Changsik; Hong, Joonpio; Min, Sungjoon; Kim, Byungchae; Lee, Sanghoon Abstract: EMG signals can be widely used for indicators of muscle activity, and it can be used for robot control. However, the practical use of the EMG sensor for the amputee has been limited due to harsh conditions in the socket where strong pressure and friction exist. In this paper, thus we suggested a flexible and stretchable EMG Sensor. It is designed to withstand the pressure of the socket and to be used repeatedly with soft adhesive material. The performance of mechanical and electrical properties is investigated, and the muscle signals are recorded in static and dynamic (jump and gait) conditions. The selectivity of the recorded muscle signals during dorsiflexion and plantar flexion shows better than that of commercial electrodes indicating that it could be used for control of robotic legs in the future.Clinical Relevance - The flexible material and stretchable electrode pattern could be helpful in clinical research for an amputee. © 2023 IEEE.

2023-07-24T15:00:00Z Jo, Yujin Kang, Minseok Shin, Heejae Lee, SangHoon https://scholar.dgist.ac.kr/handle/20.500.11750/46951 2025-07-25T02:40:04Z 2021-01-24T15:00:00Z

Title: Highly Stretchable Strain Sensor and Detecting System for Monitoring of Bladder Volume Author(s): Jo, Yujin; Kang, Minseok; Shin, Heejae; Lee, SangHoon Abstract: This paper demonstrates a highly stretchable strain sensor fabricated using biocompatible materials for bladder monitoring application. We fabricate Ecoflex-CNT strain sensors, and additionally formed AuCNT composite on the CNT film to increase stretchability as well as sensitivity. Furthermore, the monitoring system for the device using Arduino is developed. Our result shows that the device operates well within 200 % strain range, and allows to monitor the change with the monitoring system. © 2021 IEEE.

2021-01-24T15:00:00Z