https://scholar.dgist.ac.kr/handle/20.500.11750/11764 2026-07-25T17:48:52Z https://scholar.dgist.ac.kr/handle/20.500.11750/60514 Title: Highly Conductive and Stretchable Photothermal CuSe Fiber for Wearable Electronics and Implantable Drug Release Systems Author(s): Yoon, Kukro; Lee, Yukye; Rhee, Sang Ki; Park, Hyeonjoo; Kang, Kyowon; Sang, Mingyu; Kim, Byeonggwan; Lee, Jung Seung; Lee, Jaehong; Lee, Taeyoon Abstract: Recently, fiber electronics have emerged as promising platforms for next-generation wearable and biomedical systems because of their flexibility, light weight, and softness. Among them, photothermal fibers are particularly attractive for therapeutic applications because of their remote and localized heat generation. However, most existing photothermal fibers rely on near-infrared (NIR)-I-responsive materials, which exhibit shallow tissue penetration and limited efficiency, thereby restricting their applicability in tissue implantation. In this study, a stretchable photothermal copper (II) selenide (CuSe) fiber was fabricated via a simple solution-based synthesis. Owing to the uniformly embedded CuSe nanoplates within the polyurethane matrix, the fabricated CuSe fiber exhibits high electrical conductivity (3.419 S/cm), excellent stretchability (100% tensile strain), and stable heating up to 81.7 degrees C under NIR-II irradiation. When integrated into textiles, the fiber can function as both a reliable strain sensor (gauge factor = 28.88) and a wearable heater (photothermal conversion efficiency = 40.1%). In addition, an implantable NIR-triggered drug release fiber was developed by coating the prepared CuSe fiber with a thermo-responsive hydrogel, achieving photothermal-triggered drug release and exhibiting therapeutic efficacy in mice with lipopolysaccharide-induced sepsis. Overall, the developed NIR-II-responsive CuSe photothermal fiber provides a versatile and clinically relevant platform for next-generation wearable and biomedical systems. 2026-04-30T15:00:00Z https://scholar.dgist.ac.kr/handle/20.500.11750/59953 Title: All-textile, chip-less, battery-free body sensor networks enabled by a concentric multi-node hub antenna architecture Author(s): Lee, Junyeong; Lee, Mugeun; Kim, Jinho; Kim, Hwajoong; Yu, Jongbin; Kim, Namjung; Lee, Jaehong Abstract: Textile-based, chip-less, wireless body sensor networks (WBANs) offer continuous, wireless monitoring of physiological signals from passive sensors distributed across body locations, representing a promising solution for daily wearable sensing. Here, we introduce an all-textile, chip-less, and battery-free textile-based body sensor network (tBSN) capable of simultaneously monitoring multiple passive sensors across the body. The tBSN is seamlessly integrated into conventional textiles via digital embroidery of flexible conductive fiber electrodes. Single-node tBSN exhibits robust wireless transmission over interconnect up to 40 cm and demonstrates durability under various conditions. By arranging multiple single-node sensor networks into a concentric multi-hub antenna architecture, we extend the system to a multi-node tBSN, enabling simultaneous wireless monitoring of distributed passive sensors within a single frequency scan. A wearable garment incorporating the multi-node tBSN tracked biomechanical signals from the vastus lateralis and knee joint during motion, highlighting its significant potential for personalized rehabilitation, fitness-assistive technologies, and advanced gait analysis. 2025-10-31T15:00:00Z https://scholar.dgist.ac.kr/handle/20.500.11750/59872 Title: 저온-전열 구동 타입의 섬유형 액추에이터, 섬유형 액추에이터의 제조 방법 및 모니터링 시스템 Author(s): 이재홍; 노승범 Abstract: 본 발명의 실시예에 따른 섬유형 액추에이터의 제조 방법은, 비전도성 스판덱스 재질의 제1 폴리머 섬유 및 비전도성의 제2 폴리머 섬유를 코일 구조로 꼬아서 비전도성의 섬유형 액추에이터 본체를 제조하는 단계, 및 상기 섬유형 액추에이터 본체의 표면에 화학적 환원 기법으로 전도성 입자를 결합시키는 단계를 포함한다. https://scholar.dgist.ac.kr/handle/20.500.11750/59856 Title: 일체형 자가 모니터링 소프트 액츄에이터 및 소프트 액츄에이터의 자가 모니터링방법 Author(s): 김화중; 이재홍