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권효정(Hyo-Jeong Kwon),조현신(Hyun-Sin Cho),김치용(Chee-Yong Kim) 한국멀티미디어학회 2006 한국멀티미디어학회 학술발표논문집 Vol.2006 No.1
가장 기초적이면서도 단순한 조형 놀이 도구로 여겨졌던 레고 브릭이 현재는 남녀노소에 국한되지 앓고 사용자 계층의 확장에 성공하며 한충 터 복합적이고 지능적인 방식으로 디지털 분야와 접목을 시도하고 있다. 본 연구에서는 무한 가변성과 창조성을 지닌 디지털 시대의 브릭이 한층 더 진보하여 디지털화ㆍ네트워크화 되는 등, 3D 가상 브릭 시스템으로 진화된 현황에 관하여 분석해보고자 한다.
Comparison of Durability for PUA Type Resin using Wear and Nano-indentation Test
Hyun Min Choi(최현민),Sin Kwon(권신),Yoon-Gyo Jung(정윤교),Young Tae Cho(조영태) 한국기계가공학회 2018 한국기계가공학회지 Vol.17 No.5
Films with special properties (e.g., water-repellent films, optical films, anti-reflection films, and flexible films) are referred to as functional films. Recently, there has been interest in fine patterning methods for film fabrication. In particular there have been many studies that use a UV nanoimprint process involving a UV curing method. In this paper, a polymer film was fabricated by the UV nanoimprint process with a micro-pattern, and its durability was evaluated by a wear test and a nano-indentation test. The film mechanical properties (such as coefficient of friction, hardness, and modulus of elasticity) were measured. Moreover, the choice of PUA type resin used in the UV nanoimprint process was confirmed to impact the durability of the thin film. Despite making the polymer film samples using the same method and PUA type resin, different coefficient of friction, hardness, and modulus of elasticity values were obtained. PUA 4 resin had the most favorable coefficient of friction, hardness, and modulus of elasticity. This material is predicted to produce a high durability functional film.
고평삼(Pyeongsam Ko),Nguyen Dang Thuan,권신(Sin Kwon),우규희(Kyoohee Woo),이택민(Taikmin Lee),Zhaoyang Zhong,윤홍석(Hongseok Youn) 한국생산제조학회 2018 한국생산제조학회지 Vol.27 No.5
Polymer light-emitting diodes (PLEDs) have great potential toward next generation light source because of their flexibility, facile fabrication, and simple structure. However, the fabrication of low-cost PLEDs is still quite challenging, owing to the vulnerability of cathode and electron injection/transportation materials against the oxygen and moisture in the air. In this paper, we propose an all solution-processable polymer light-emitting diode structure and lamination method. Generally, electrode layers are formed by vacuum deposition; however, in this study, a solution-processed Ag film was developed and used as an electrode. The solution-processed Ag film was transferred to a polymer hot-melt film and then laminated onto the PLED layer. The laminated device exhibited good performances in turn-on voltage (5.0 V), brightness (2500 cd/m²) and current efficiency (0.6 cd/A), which were comparable to that of the evaporated device.