https://scholar.dgist.ac.kr/handle/20.500.11750/906 2026-04-04T11:08:46Z https://scholar.dgist.ac.kr/handle/20.500.11750/59915 Title: Stretchable p/n-Pair Thermoelectric Fibers Based on Core (Ag)-Shell (Ag2Se) Structure for Wearable Electronics Author(s): Kwon, Chaebeen; Lee, Sanghyeon; Cho, Sungjoon; Won, Chihyeong; Kim, Byeonggwan; Jang, Kyung-In; Lee, Taeyoon Abstract: The development of stretchable p/n-pair thermoelectric (TE) fibers holds significant promise for multifunctional wearable electronics, yet remains challenging due to complex processing and limited mechanical durability. Here, a novel strategy is presented for the facile fabrication of stretchable Ag@Ag2Se-based TE fibers using a selective in situ chemical reduction process, eliminating the need for thermal treatment or specialized equipment. The resulting fibers feature a robust core-shell architecture, with conductive Ag cores and n-type Ag2Se shells, achieving a Seebeck coefficient of -96.75 mu V K-1 under 100% strain and stable electrical conductivity under 200% strain. Notably, the fibers exhibit excellent cyclic stability with Delta V/V0 maintained within 1.75% under mechanical deformation. When patterned into p/n-pair arrays through localized chemical treatment, the fibers function as efficient energy harvesters and strain/temperature sensors. Integrated into wearable platforms, these fibers demonstrate simultaneous mechanical and thermal sensing and effective energy harvesting from body heat. This work establishes a versatile platform for scalable, miniaturized, and multifunctional TE fiber systems, advancing the future of smart textiles and wearable electronics. https://scholar.dgist.ac.kr/handle/20.500.11750/59280 Title: Biotic-Abiotic Interface Engineering for Peripheral Nerve Modulation and Repair Author(s): Jekal, Janghwan; Park, Jin Tae; Kim, Eunmi; Lee, Yoon Kyeung; Jang, Kyung-In Abstract: The peripheral nervous system (PNS) has emerged as a versatile and clinically accessible target for neuroengineering, offering unique advantages in modularity, surgical accessibility, and regenerative capacity. These characteristics have led to the development of peripheral nerve interfaces aimed at clinical implementation across therapeutic and prosthetic applications. Peripheral nerve interfaces involve a broad range of technologies designed to record, stimulate, or repair neural pathways. These technologies are increasingly converging toward systems that are not only surgically and functionally integrated, but also capable of adaptive, closed-loop control. Collectively, these developments represent an advancement in peripheral nerve interface design from passive or pre-programmed interventions to interactive, responsive, and personalized platforms for neural repair and modulation. This review highlights recent advances in biotic-abiotic interface engineering for peripheral nerve applications, encompassing wearable and implantable approaches, as well as addressing current challenges and discussing future perspectives. 2026-01-31T15:00:00Z https://scholar.dgist.ac.kr/handle/20.500.11750/59079 Title: 액체 금속 기반의 형상 가변형 터치 센서 및 제조방법 Author(s): 하정대; 송수정; 장경인 Abstract: 일 실시예에 따른 액체 금속 기반의 형상 가변형 터치 센서는 플랙서블 터치전극을 포함하는 터치센서층, 상기 터치센서층의 아래에 배치되고, 전류가 가해지면 발생하는 자기장에 따라서 형상이 변화하는 제1 액체 금속 코일을 포함하는 액츄에이터층 및 상기 액츄에이터층의 아래에 배치되고, 상기 제1 액체 금속 코일과 사이에서 상기 자기장을 발생시키는 베이스층을 포함하고, 상기 터치센서층의 형상은 상기 액츄에이터층에 배치된 상기 제1 액체 금속 코일의 형상의 변화에 대응하여 변화한다. https://scholar.dgist.ac.kr/handle/20.500.11750/58996 Title: A soft neural interface with a tapered peristaltic micropump for wireless drug delivery Author(s): Lee, Hyeokjun; Song, Soojeong; Ha, Jeongdae; Lee, Yoon Kyeung; Jang, Kyung-In Abstract: Achieving precise, localized drug delivery within the brain remains a major challenge due to the restrictive nature of the blood-brain barrier and the risk of systemic toxicity. Here, we present a fully soft neural interface incorporating a thermo-pneumatic peristaltic micropump integrated with asymmetrically tapered microchannels for targeted, on-demand wireless drug delivery. All structural and functional components are fabricated from soft materials, ensuring mechanical compatibility with brain tissue. The system employs sequential actuation of microheaters to generate unidirectional airflow that drives drug infusion from an on-board reservoir. The nozzle-diffuser geometry of the microchannels minimizes backflow while enabling controlled, continuous delivery without mechanical valves. Fluid dynamics simulations guided the optimization of the microfluidic design, resulting in robust forward flow with minimal reflux. Benchtop validation in brain-mimicking phantoms confirmed consistent and programmable drug infusion. This platform represents a significant advancement in neuropharmacological research and therapeutic delivery for central nervous system disorders. 2025-07-31T15:00:00Z