https://scholar.dgist.ac.kr/handle/20.500.11750/812 2026-09-13T12:00:07Z https://scholar.dgist.ac.kr/handle/20.500.11750/60693 Title: 세탁 후 전기적 특성이 유지되는 고내구도 전도성 섬유 및 이의 제조방법 Author(s): 마요한; 정우성; 이동주; 이선학; 이선민; 최혁주; 이성원; 유승선 Abstract: 본 발명은 세탁을 포함한 반복적인 외부 응력에도 전도성을 유지하는 고내구도 전도성 섬유에 관한 것으로, 상세하게는 섬유와 금속간의 계면 접착력을 유지하면서도 반복적인 외부 응력에도 전기적 특성이 열화되지 않는 고내구도 전도성 섬유 및 이의 제조방법에 관한 것이다. https://scholar.dgist.ac.kr/handle/20.500.11750/60689 Title: Tissue-Adaptive, Adhesive, and Ultra-Conformal Polymer Nanomesh-Based Implantable Bioelectrode for Long-Term Stable Electrical Stimulation Author(s): Choi, Hyeokjoo; Shin, Juhee; Bae, Jihoon; Lee, Seungyeop; Hwang, Sieun; Jang, Gain; Mun, Seul-Ah; Kim, Chi Heon; Han, Inbo; Roh, Jong Wook; Kim, Kyoung-Tae; Lee, Sungwon Abstract: Electrical stimulation has emerged as a promising strategy for enhancing bone regeneration; however, its long-term effectiveness is often limited by poor electrode-tissue conformity, mechanical mismatch, and interfacial instability in the complex and heterogeneous bone environment. Here, we present a tissue-adaptive, ultra-conformal polymer nanomesh-based implantable bioelectrode designed to enable stable and reliable electrical stimulation on mechanically rigid and topographically irregular bone surfaces. Nanomesh-based bioelectrodes demonstrated superior mechanical compliance and tissue adaptability, with smaller changes in dermal (polyimide film: 1192.26 & micro;m, nanomesh: 905.56 & micro;m) and fibrotic thickness (polyimide film: 240 & micro;m, nanomesh: 49.04 & micro;m) after eight weeks of implantation. The porous nanomesh structure exhibited 2.9- and 7.3-times improved adhesive properties for sliding and peel-off, respectively. Additionally, its porosity promoted tissue growth, enhancing adhesion, mechanical compliance, and stable long-term electrical energy transfer. Finally, in a rabbit calvaria bone defect model, the nanomesh-based electroceutical system enhanced bone mineral density by 15% and bone volume by 25% compared to the control group. This work highlights the potential of nanomesh-based implantable bioelectrode as a platform for effective, long-term tissue regeneration. 2026-04-30T15:00:00Z https://scholar.dgist.ac.kr/handle/20.500.11750/59285 Title: Ultra-thin high-resolution transfer-printed breathable electronics for conformal wearable devices Author(s): Choi, Hyeokjoo; Lee, Dongju; Hwang, Sieun; Shin, Juhee; Bae, Jihoon; Jang, Gain; Kwon, Seokhun; Kang, Hyunil; Myeong, Jihyeon; Jeong, Youngtae; Roh, Jong Wook; Lee, Sungwon Abstract: Nanomesh electronics offer remarkable potential for biomedical and human–machine interface applications due to their conformability to nonplanar surfaces, versatile functionality, and long-term reliability. However, existing materials face significant challenges related to surface structure and chemical resistance, resulting in high electrical resistance and complex fabrication requirements. To address these challenges, we present transfer-printed nanomesh electrodes (NEs) produced by integrating fine-patterned 2D electrodes with porous nanomesh. Electrospun thermoplastic-polyurethane nanofibers provide strong adhesion to the electrodes, which generate sufficient force (95.1 mN∙cm−1) to maintain structural integrity and electrical performance. Unlike direct deposition, which requires a minimum thickness of 100nm to achieve 14.12±2 mS, transfer-printed NEs reach 16.91±8.7 mS only with 20nm. Furthermore, our electrodes demonstrate excellent durability under deformation, maintaining stable electrical performance with only a 0.53% change at a bending radius of 1mm. To validate their practical application, we demonstrate a NE-based tactile sensor, which exhibits a conductance change from 0 mS in the normal state to 130 mS upon touch. These results highlight the potential of transfer-printed NEs for next-generation e-skin with fine patterning, high conductivity, and long-term reliability. In addition, our novel method addresses the challenges of manufacturing breathable devices with functionalities extending beyond simple electrodes. 2025-11-30T15:00:00Z https://scholar.dgist.ac.kr/handle/20.500.11750/59253 Title: 초음파 센서를 이용한 방광 모니터링 장치 및 방법 Author(s): 고영휘; 윤영훈; 이성원 Abstract: Provided is a bladder monitoring apparatus including: an ultrasonic sensor module including an ultrasonic sensor configured to transmit an ultrasonic wave toward a front wall of a bladder and receive the reflected ultrasonic wave; a control module configured to measure a passage time interval, calculate distance information, and calculate a volume of the bladder from the distance information and configuration information; and an output module configured to output the bladder volume calculated by the control module.