https://scholar.dgist.ac.kr/handle/20.500.11750/9971 2026-05-14T08:06:59Z 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 https://scholar.dgist.ac.kr/handle/20.500.11750/59888 Title: DC POWER GENERATION DEVICE USING CONDUCTIVE POLYMER GEL AND METHOD THEREOF Author(s): 박효식; 이주혁 Abstract: The present invention relates to a high-output DC electric energy generation device using a conductive polymer gel and, more particularly, to a technology for generating DC electric energy using a charge recombination mechanism through contact-separation and sliding methods, wherein a conductive polymer gel including a mixture of PVC and a plasticizer or a mixture of PVDF and an ionic liquid is disposed between upper and lower metal electrodes made of gold or aluminum. The present invention can provide stable and efficient DC power to various applications such as IoT sensors and small electronic devices by optimizing the thickness of the conductive polymer gel, the concentration of the plasticizer, the metal electrode material, and the like. In particular, the present invention can increase power efficiency through charge generation and accumulation processes performed by vertical and horizontal movements of the electrodes.