James Jungho Pak
고려대학교 전기전자공학부 · 공학
James Jungho Pak 교수의 연구실은 전자재료 및 나노소재를 기반으로 한 에너지 변환 및 저장 기술, 특히 초박판 전기화학 소재, 리트로스위칭 메모리(RRAM), 마이크로펌프 및 전기진동 기반 미세유체 장치 개발에 중점을 두고 있습니다. 고성능, 저비용, 대량 생산이 가능한 소재 합성 및 공정 기술 개발을 통해 실용적 응용을 목표로 하며, 특히 생체적합성과 안정성을 확보한 전기적·화학적 성능 향상 기술을 연구하고 있습니다. 특히, 이온 폴리머-금속 복합체(IPMC), 바이오 기반 섬유, 산화물 기반 슈퍼커퍼시터 및 전기촉매 소재 등 다양한 나노소재의 설계 및 응용에 기여하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
This paper describes the fabrication and characteristics of an ionic polymer-metal composite (IPMC) membrane-shaped micro-actuator and its application to the fabrication of a micro-pump. After fabricating two 8mm×8mm IPMC membrane-shaped actuators using a Nafion film, their displacements were measured. The fabricated IPMC membrane-shaped micro-actuators showed displacement of 14~27μ at the applied voltage ranging from 4VP-P to 10VP-P at 0.5Hz. Displacement of the IPMC actuator fabricated wi
In dry jet-wet spinning of a cellulose/ N-methylmorpholine N-oxide hydrate solution, the effects of the hydration number n in NMMO hydrates and the concentration and molecular weight of cellulose are investigated in terms of the physical properties of the fibers. Dry jet-wet spinning of lyocell fibers is also investigated using three different set-ups; a piston type, an N 2 gas pressure type, and spinning equipment with an extruder. The effects of spinning conditions such as the spin draw ratio,
Abstract In this study, we have investigated the resistive switching behavior of multi-stacked PVA/GO + PVA composite/PVA insulating layer-based RRAM (resistive random-access memory) as the annealing temperature of the insulating layer was varied between 100 °C, 150 °C, and 200 °C. The fabricated RRAM device with a multi-stacked insulating layer annealed at 200 °C showed relatively good switching properties with a high on/off ratio (∼10 4 ) and low V SET (3.5 ± 0.29 V) and V RESET (−1.81 ± 0.10
The use of easy synthesis methodology, high performance, and stable electrode materials is mandatory while developing potential energy storage devices on a mass scale. In the present work, room-temperature operating, a simple solution method is employed for obtaining ultrathin bismuth oxide chloride (BiOCl) supercapacitor electrode material over 3D nickel-foam. This free-standing BiOCl ultrathin petal-type electrode material was characterized for confiming the crystal strcture, surface morpholog
