http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
이산화탄소 수송을 위한 압축 및 액화 공정 설계 및 비용 평가
양시엽 ( See Yub Yang ),이웅 ( Ung Lee ),임영섭 ( Young Sub Lim ),정영수 ( Yeong Su Jeong ),김정남 ( Jeong Nam Kim ),이차섭 ( Chi Seob Lee ),한종훈 ( Chong Hun Han ) 한국화학공학회 2012 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.50 No.6
Energy and cost analysis of the preprocessing for carbon capture and storage transportation such as supercritical compression and liquefaction is done using chemical simulation model. Direct compression to supercritical phase (process 1-1), liquefaction and pumping (process 1-2), carbon dioxide compression and expansion as a refrigerant itself (process 2), usage of other refrigerant with compression and expansion (process 3-1), with absorption chiller (process 3-2), cascade refrigeration (process 3-2) have been simulated and evaluated. The specific cost is about 4 to 7 $/ton.
Ryu, Kwang-Su,Yang, See-Hun,Thomas, Luc,Parkin, Stuart IOP Publishing 2016 Japanese journal of applied physics Vol.55 No.9
<P>We have studied the current-induced domain wall (CIDW) dynamics in perpendicularly magnetized Co/Ni multilayers deposited on Au underlayer, where the conventional spin transfer torque governs the domain wall dynamics, by the Kerr microscope. It is found that the DW angle tilting following Oersted field profile plays an important role in domain wall (DW) motion at high current density J by decreasing DW velocity with the increasing J, while distorting its DW morphology. Also we find that the DW pinning becomes pronounced as the anisotropy decreases by increasing number of Co/Ni repeats. Most remarkably, the DW tilting angle changes its sign by inserting ultrathin Pt layer between Au and Co layer, which suggests that the Dzyaloshinskii-Moriya interaction and spin Hall effect induces opposite effect in DW tilting. Our findings can be of use for application of CIDW to spintronics with perpendicularly magnetized systems. (C) 2016 The Japan Society of Applied Physics</P>
Current-Induced Domain-Wall Motion for Electron Flow in Ferromagnetic Pt/Co/Ni/Co/Pt Wires
Ryu, Kwang-Su,Yang, See-Hun,Thomas, Luc,Parkin, Stuart IEEE 2016 IEEE transactions on magnetics Vol.52 No.7
<P>We report the current-induced domain-wall (CIDW) motion along the electron flow in the perpendicularly magnetized Co/Ni/Co structure sandwiched between the top and bottom Pt layers, observed by means of the Kerr microscope. As the lower Co thickness increases, the DW velocity for the electron flow is significantly increased, and also its motion becomes more stable irrespective of various current pulses. From the longitudinal field dependence of the DW velocity, it is found that the increase of the lower Co thickness increases a Dyzaloshinskii-Moriya interaction in the bottom Co/Pt interface, which results in the increase of the chiral spin torque, responsible for the increase of the DW velocity along the electron flow.</P>
반강자성 IrMn 층과 인접한 Co/Ni 다층박막의 수직 교환 바이어스
류광수(Kwang-Su Ryu),양시훈(See-Hun Yang) 한국자기학회 2017 韓國磁氣學會誌 Vol.27 No.6
We report the experimental observation of the perpendicular exchange bias effect in the ferromagnetic CoNi multilayers interfacing with antiferromagnetic IrMn layer. From a hysteresis loop measurement, it was found that as the antiferromagnetic IrMn thickness increases from 5 Å to 40 Å, the hysteresis loop is gradually changed from the symmetric shape to the asymmetric shape shifted by some amount corresponding to the exchange-biased field at the thickness of 20 Å. Also, the domain observation experiment shows that the domain reversals in the increasing and decreasing field regions at the sample with the thickness of 40 Å exhibit the same single domain wall motion even though they have the different coercivities.