https://scholar.dgist.ac.kr/handle/20.500.11750/9971 2026-07-14T09:26:13Z https://scholar.dgist.ac.kr/handle/20.500.11750/60423 Title: Skin-Integrated Wearable Electronics: A Dual-Interface Perspective Author(s): Dong, Fuying; Han, Chi; Cai, Sheling T.; Lee, Ju-Hyuck; Niu, Simiao Abstract: Skin-integrated wearable electronics enable continuous, medical-grade monitoring and therapy in daily life, but must balance conflicting needs related to mechanics, power, and communication. This review uses a dual-interface approach that separates the sensor–receiver interface, which handles wireless data and energy transfer, from the sensor–skin interface, where physiological signals are converted and mechanical and biological integration occur. We first reviewed wireless connections designed for skin electronics, focusing on Bluetooth Low Energy (BLE), Radio Frequency Identification (RFID)/Near-Field Communication (NFC) systems, and hybrid systems. Next, we examine sensor–skin interfaces ranging from mediated contact layers such as hydrogels for wearable ultrasound and soft conductive electrodes, to skin-conformal direct-contact methods based on structural mechanics, and ultrathin epidermal devices. Finally, we discuss cross-interface coupling, emphasizing how antenna layouts, power budgets, and body-induced RF effects limit mechanical design, and how skin mechanics influence link reliability. We conclude by exploring opportunities in battery-free and energy-autonomous systems, body-coupled communication, and integration with artificial intelligence (AI)-enabled digital health, positioning future electronic skins as soft, networked platforms that are comfortable and reliable. © 2026 The Author(s). SmartSys published by John Wiley & Sons Australia, Ltd on behalf of Youke Publishing Co., Ltd. 2025-11-30T15:00:00Z https://scholar.dgist.ac.kr/handle/20.500.11750/60328 Title: 이온성 폴리우레탄 기반 자가치유 및 생분해성 마찰전기 나노발전소자 Author(s): 이주혁; 주현서 Abstract: 본 발명은 이온성 폴리우레탄 기반 자가치유 및 생분해성 마찰전기 마찰전기 나노발전소자에 관한 것으로, 본 발명의 일실시예에 따른 이온성 폴리우레탄 기반 자가치유 및 생분해성 마찰전기 나노발전소자는 음극성(negative)을 나타내는 마찰 물질로 형성되는 제1 마찰층, 상기 제1 마찰층에 대향하고, 이온성 액체 기반 사슬 연장제의 비율에 따라 양극성(positive), 자가치유 및 생분해성 정도가 제어되는 이온성 폴리우레탄으로 형성되는 제2 마찰층 및 상기 제2 마찰층내 삽입되고, 상기 이온성 폴리우레탄과 금속 물질이 결합된 물질로 형성되며, 상기 제1 마찰층과 상기 제2 마찰층 간의 접촉 마찰에서 발생되는 전자를 생성 및 전달하는 전극층을 포함할 수 있다. https://scholar.dgist.ac.kr/handle/20.500.11750/59987 Title: Dielectric Polarization-Driven Energy Amplification in 2D Nanostructure-Embedded PVC Gel TENGs for Tribo-Resistive Sensing Applications Author(s): Park, Hyosik; Gbadam, Gerald Selasie; Lee, Cheoljae; Joo, Hyeonseo; Gwak, Sujeong; Rojas, Orlando J.; Lee, Ju-hyuck Abstract: Plasticized poly(vinyl chloride) (PVC) gels are prototypical soft ionic polymers that combine strongly negative charge polarity with inherently high permittivity; however, their mobile ions impose substantial dielectric loss and leakage currents, which limit the output of triboelectric nanogenerators (TENGs). Here, graphene oxide (GO) nanosheets are embedded as 2D capacitive layers in a PVC gel, where they immobilize excess ions and add interfacial polarization, giving a dielectric constant of 32 at 1 kHz while lowering the dissipation factor (tan delta) by 65% relative to the pristine gel. The optimized GO-doped gel TENG delivers 282 V, 20.1 mu A, and 612 mu W/cm2-approximately 2.3, 2.0, and 2.5 times the values of the pristine PVC gel, respectively. A single GO-PVC gel layer simultaneously functions as both dielectric and electrode, powering a self-powered tribo-resistive sensor that pinpoints pressures up to 800 kPa over a 5 x 5 virtual grid, with a spatial resolution of approximate to 1.8 mm and pressure sensitivities of 194 mV/kPa (0-200 kPa) and 25 mV/kPa (200-800 kPa). By suppressing ion-driven loss while amplifying polarization, this 2D capacitive-layer strategy is transferable to other ionic-gel systems-including ionic-liquid gels and ionomers-charting a versatile route toward high-output soft TENGs for energy-autonomous wearables and electronic skin. 2026-01-31T15:00:00Z https://scholar.dgist.ac.kr/handle/20.500.11750/59895 Title: 마찰 대전 터치 센서, 마찰 대전 터치 센서의 구동 방법, 및 전자 기기 Author(s): 이주혁; 박효식