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전해질 변화에 따른 Viologen 자기조립박막의 전하이동 특성 연구
이동윤,박상현,신훈규,박재철,장정수,권영수,Lee, D.Y.,Park, S.H.,Shin, H.K.,Park, J.C.,Chang, J.S.,Kwon, Y.S. 한국전기전자재료학회 2004 전기전자재료학회논문지 Vol.17 No.12
The self-assembled monolayers of alkane derivatives with sulfur containing head groups on gold substrates have been widely examined recently, since the binding between S atoms and Au surface is strong. The viologen has been widely investigated their well-behaved electrochemistry including electron transfer mediation, the surface-enhanced of the adsorption and the behavior of supramolecular assemblies at electrode surfaces in theses and various studies. Yiologen monolayers are formed onto QCM by self-assembly method. We studied the relationship of electron transfer from changing the anions in 0.1 M NaCl and NaClO$_4$ electrolyte solution. The EQCM measurements revealed the anions transfer during reduction and oxidation, respectively From the EQCM data, the well-defined shape peaks were nearly equal charges by cyclic voltammetry.
장명,장정수,강면식,조범구,홍필훈,Chang, M.,Jang, J.S.,Kang, M.S.,Cho, B.K.,Hong, P.W. 대한흉부심장혈관외과학회 1980 Journal of Chest Surgery (J Chest Surg) Vol.13 No.3
The rupture of the aorta commonly follows major blunt trauma to the thorax. It has markedly increased in recent years, paralleling the rising number of vehicular accidents. The most frequent site of rupture is the area of the isthmus, with the ascending aorta second. The diagnosis of the condition from clinical data is difficult, and aortography is used whenever aortic tear is suspected. We are presenting a case of patient who had intimal tearing of the thoracic aorta with multiple injuries. The patient underwent surgical repair 28 days after injury with left heart [LA-Femoral artery] bypass.
수정진동자에 의한 Polypyrrole중합막의 Electrochromatic 현상
김정명,김종민,장상목,장정수,권영수 경북대학교 센서기술연구소 1995 센서技術學術大會論文集 Vol.6 No.1
This paper shows that the electrochemical mass transport in polypyrrole(Ppy) thin film deposited electrode, involves the rheological change and electrochromatics of the Ppy. These changes can be detected by measuring the resonant frequency, resonant resistance, and UV spectrum of a Ppy deposited quartz crystal. A Ppy deposited quartz crystal is used and measured the cyclic voltammograms in KClO_(4) electrolyte solution. The changes of the resonant frequency and resonant resistance showed that mass transport and viscoelastic changes occur in the Ppy film. The absorption change means that the electrochromatics change occurs also in the Ppy film
공중합체 LB막의 누적상태 평가 및 유기 가스 반응 특성
신훈규,최용성,이범종,정귀상,장정수,권영수 경북대학교 센서기술연구소 1995 센서技術學術大會論文集 Vol.6 No.1
In this paper, the monolayers of the polymers which were polyion-complexed with PAA at the air-water interface can be transferred onto solid substrates such as porous fluorocarbon membranes filter and quartz crystal microbalance. The properties of the monolayers and the LB films have been discussed by π-A isothemis, FT-IR, DSC, deposition ratio, QCM, SEM and UV absorbance. In addition, it was attempted to investigate response characteristics of polymer LB films to the organic gas by the use of QCM.