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Jung, Hunsang,Jung, Jihee,Kwon, Dahye,Lee, Kyungmin,Lee, Pilwoo,Kang, Wonkyu,Yoon, Tae-Sik,Kang, Chi Jung,Lee, Hyun Ho Elsevier 2019 Journal of industrial and engineering chemistry Vol.78 No.-
<P><B>Abstract</B></P> <P>In this study, a resistive switching (RS) memory characteristic of zinc oxide (ZnO) nanoparticles (NPs) multiple layer through a neurotransmitter and its corresponding antibody’s specific binding was demonstrated in Al/ZnO NPs/ITO device format. Particularly, a layer-by-layer (LbL) assembly was enabled through a specific immune binding between a stress hormone, cortisol, and its fittable cortisol monoclonal antibody (c-Mab). The assembly formation was accomplished using sequential LbL deposition, which could accomplish alternating self-assembly monolayers (SAMs) of ZnO NPs as the RS active layer. Here, the current–voltage (I–V) curve exhibited disparate nonvolatile RS characteristics depending on sweep polarity showing consecutively evolved hysteresis. In this study, analog-typed RS function of the ZnO NPs LbL device was demonstrated and characterized.</P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Multistate resistive switching characteristics of ZnO nanoparticles embedded polyvinylphenol device
Jung, Jihee,Kwon, Dahye,Jung, Hunsang,Lee, Kyungmin,Yoon, Tae-Sik,Kang, Chi Jung,Lee, Hyun Ho Elsevier 2018 Journal of industrial and engineering chemistry Vol.64 No.-
<P><B>Abstract</B></P> <P>Multistate resistive switching device was demonstrated with organic/inorganic nanocomposite layer of polyvinylphenol (PVP) embedded with zinc oxide nanoparticles (ZnO NPs). Both cap (ITO/ZnO NPs+PVP/Al) and crossbar (Pt/ZnO NPs+PVP/Al) device formats were examined, respectively. Extending range of voltage sweep could show adaptive memory effect, which could roughly emulate analog resistive switching device. In addition, potentiation and depression behaviors were also examined with 50 time consecutive pulsed bias (+2.0V and −2.0V respectively) having 10ms width measured at read voltage of −0.2V. A new possibility of analog resistive switching can be further pursued with the ZnO NPs+PVP nanocomposite.</P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
[동력전달계] 구동력 제어 시스템의 제어기 설계에 관한 연구
정훈상(Hunsang Jung),박영진(Youngjin Park) 한국자동차공학회 1999 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1999 No.11_2
Excessive traction torque while starting on slippery roads and slopes causes the wheels to spin, consequently reducing the directional stability and the traction force. It may be a difficult task for normal drivers to steer under these conditions. To solve this problem, researches on the traction control system (TCS) that controls the traction torque using various vehicle pans have been conducted. But these commercial TCSs use experiential methods such as lookup table and gain-scheduling to achieve proper performance under various road and vehicle conditions. This paper proposes a novel brake torque controller .which is insensitive to the variation of vehicle mass, brake gain and road conditions. and throttle angle controller using multiple sliding mode based on the engine model. Through the hybrid use of two controllers, the suggested controller could gain traction force and directional stability.