The University of Tokyo · 공학
Junho Choi 교수의 연구실은 마이크로·나노스케일의 표면 기술과 마찰·윤활 특성 제어를 핵심으로 하며, 특히 다이아몬드-like 탄소(DLC) 및 타액전기 나노발전기(TENG)를 활용한 스마트 센서 및 고내구성 윤활 시스템 개발에 주력하고 있습니다. 자기디스크의 초박막 윤활막 제어, 산업용 베어링의 자가진단 기능 구현, 그리고 기계적 에너지 수확 기술의 실용화를 위한 표면 기능화 기술이 핵심 연구 주제입니다. 특히 나노스케일의 표면 구조 제어와 분자 자가조립 기반 윤활막 형성 기술이 응용되고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
Abstract With the rapid development of the Internet of Things and artificial intelligence (AI), the requirement for sensing technologies for smart bearings has increased dramatically. The general bearing sensors can only recognize the basic information from temperature or vibration, far from satisfying the self‐diagnosis and self‐maintenance. Recently, self‐powered sensing technologies based on triboelectric nanogenerators have paved a new route for fabricating smart bearings. In this study, the
Self-assembled monolayers (SAMs) of 1H,1H,2H,2H-perfluorodecyltriethoxysilane were deposited on the magnetic hard disk surface by immersion. SAM formation was confirmed by contact angle measurement, ellipsometry, and x-ray photoelectron spectroscopy. Friction of unlubricated, SAM-coated, and perfluoropolyether (PFPE) Zdol-coated disk surfaces was measured with lateral force microscopy, spin-stand tester, and scratch tester. The SAM-coated disk surfaces had lower friction as compared to the unlub
Abstract In the present study, the effects of silicon oxide layer of Si‐DLC coatings on the tribological properties were investigated. The Si‐DLC coatings were deposited on Si substrates using a bi‐polar type plasma‐based ion implantation and deposition technique (bi‐polar type PBII&D), and the surface of the Si‐DLC coating was treated by oxygen plasma for 180 seconds. The friction coefficient of the Si‐DLC coatings is effectively reduced due to the treatment of oxygen plasma whereas the wea
