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금속 나노 파티클의 레이저 플라즈모닉 어닐링을 통한 메탈메쉬 전극 형성과 이를 활용한 유연 터치 센서
정성민 ( Seongmin Jeong ),황윤식 ( Yun Sik Hwang ),우유미 ( Yu Mi Woo ),조용준 ( Yong Jun Cho ),김찬혁 ( Chan Hyeok Kim ),안민기 ( Min Gi An ),서호석 ( Ho Seok Seo ),양찬현 ( Chan Hyeon Yang ),박귀일 ( Kwi-il Park ),박정환 ( Jung 한국전기전자재료학회 2024 전기전자재료학회논문지 Vol.37 No.2
Laser-induced plasmonic sintering of metal nanoparticles (NPs) holds significant promise as a technology for producing flexible conducting electrodes. This method offers immediate, straightforward, and scalable manufacturing approaches, eliminating the need for expensive facilities and intricate processes. Nevertheless, the metal NPs come at a high cost due to the intricate synthesis procedures required to ensure long-term reliability in terms of chemical stability and the prevention of NP aggregation. Herein, we induced the self-generation of metal nanoparticles from Ag organometallic ink, and fabricated highly conductive electrodes on flexible substrates through laser-assisted plasmonic annealing. To demonstrate the practicality of the fabricated flexible electrode, it was configured in a mesh pattern, realizing multi-touchable flexible touch screen panel.
광환원 공정을 이용한 계층적 산화아연/은 구조의 광 전기화학 소자 제작
조현민(Hyunmin Cho),권진형(Jinhyeong Kwon),정진욱(Jinwook Jung),김현석(Hyeonseok Kim),김동관(Dongkwan Kim),정성민(Seongmin Jeong),홍석준(Sukjoon Hong),여준엽(Junyob Yeo),고승환(Seung Hwan Ko) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
ZnO/Ag hierarchical nanostructure is fabricated by solution-based photoreduction process to demonstrate a photoelectrochimical (PEC) cell charging supercapacitor. The photoreduction process ensures rapid and simple route for employing of Ag nanoparticles onto the surface of ZnO nanorod with well-dispersed and clear crystallization structure. The fabricated ZnO/Ag hierarchical nanostructure showed improved optical and photoelectrochemical properties. Subsequently, the ZnO/Ag hierarchical nanostructure is used as photoanode for PEC cell with enhanced output photocurrent and stability. Furthermore, the PEC cell was connected to lab-made supercapacitors to turn on a light emitting diode. The photoreduction-processed ZnO/Ag hierarchical nanostructures provide a promising and simple production method for energy source in water splitting applications.
Hyeonseok Kim(김현석),Young D. Suh(서영덕),Jaeho Shin(신재호),Phillip Won(원필립),Seongmin Jung(정성민),Jinhyeong Kwon(권진형),Seung Hwan Ko(고승환) 대한기계학회 2016 대한기계학회 춘추학술대회 Vol.2016 No.12
We demonstrate a novel class of flexible transparent conductor based on metal nanowire micro-bundled networks at random patterns. Original random patterns are prepared from controlled random cracking of high-stress silicon nitride on the silicon substrate, and employed as repetitively usable master molds with independently controllable pattern density and linewidth. Silver nanowires are subsequently placed in the random crack channels through a facile solution process and transferred to the polymer substrate with UV curable epoxy resin. The resultant flexible and transparent conductor, spanning over wafer scale at high reproducibility, not only exhibits enhanced mechanical robustness upon repeated bending or scratching, which often occurs when used as touch-screen panel, but also is free from the moire pattern problem due to the random nature of nanowire bundle patterns. Further application of the resultant flexible transparent conductor as a touch-screen panel confirms easy