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| 1 | Effects of Cr interlayer on mechanical and tribological properties of Cr-Al-Si-N nanocomposite coating显示文摘Cr-Al-Si-N coatings were deposited on SUS 304 substrate by a hybrid coating system. A Cr interlayer was introduced between Cr-Al-Si-N coating and SUS 304 substrate to improve the coating adherence. The effects of Cr interlayer on the microhardness, adhesion, and tribological behavior of Cr-Al-Si-N coatings were systematically investigated. The results indicate that the microhardness of the Cr-Al-Si-N coatings gradually deceases with increasing thickness of Cr interlayers. The adhesion between Cr-Al-Si-N and SUS 304 substrate is improved by addition of the Cr interlayers. A peak critical load of ~50 N is observed for the coating containing Cr interlayer of 60 nm as compared ~ 20 N for the coating without Cr interlayer. The thicker Cr interlayers result in reduced critical load values. Moreover, the wear resistance of the Cr-Al-Si-N coatings is greatly enhanced by introducing the Cr interlayer with thickness of 60 nm in spite of the decreased microhardness. The friction coefficient of the coating system is also moderately reduced. | Young Su HONG Se Hun KWON Tiegang WANG Doo-In KIM Jihwan CHOI Kwang Ho KIM | 2011 | Transactions of Nonferrous Metals Society of China2011，21，A01： | 6 |
| 2 | Separation of tetra- hydrofuran and water using pressure swing distillation: Modeling and optimization 显示文摘 | Jihwan Lee Jungho Cho Dong Min Kim | 2011 | Korean J Chem Eng2011，28，2： | 1 |
| 3 | Improvement of the biaxiaI flexure test method for concrete显示文摘 | Jihwan Kim Dong Joo Kim Goangseup Zi | 2013 | Cement and Concrete Composites2013，37，： | 1 |
| 4 | Nonvolatile flexible organic bistable devices fabricated utilizing CdSe/ZnS nanoparticles embedded in a conducting poly N-vinylcarbazole polymer layer显示文摘 | Son Dongick Kim Jihwan Park Donghee | | 0，，05： | 1 |
| 5 | Evaluation of mechanical properties of steel-fiber reinforced concrete exposed to high temperatures by double-punch test 显示文摘 | Jihwan Kim Gyu-Phil Lee Do Young Moon | 2015 | Construction and Building Materials2015，79，： | 1 |
| 6 | Human embryonic stem cell-derived neural precursor transplants attenuate apomorphine-induced rotational behavior in rats with unilateral quinolinic acid lesions显示文摘 | Jihwan Song Soon-Tae Lee Wonsuk Kang Jung-Eun Park Kon Chu Song-ee Lee Taesun Hwang Hyungmin Chung Manho Kim | 2007 | Neuroscience Letters2007，，1： | 1 |
| 7 | Modeling and Optimization Study on the Separation of Acetone from Methanol through Pressure Swing Distillation 显示文摘 | Alyssa Marie Fulgueras Dong Sun Kim Jihwan Lee Jungho Cho | 2008 | Book of Abstracts of the 12th Asian Pacific Confederation of Chemical Engineering Congress (Vol 2 Environment and Green Processing)2008，，08： | 1 |
| 8 | Separation of tetrahydrofuran and water using pressure swing distillation:Modeling and optimization显示文摘 | Lee Jihwan Cho Jungho Kim Dong Min | | 0，，02： | 1 |
| 9 | Impact of Korean Ginseng (Panax Ginseng) on Power Generation of Microbial Fuel Cells显示文摘 | Wonjae Kim Peter Lee Thomas W. Kim George Kim Jonathan Sukhee Chung Jihwan Alex. Joo Sung-Jae Chung | 2015 | Journal of Chemistry and Chemical Engineering2015，9，7： | 1 |
| 10 | Separation of Tetrahydrofuran and Water Using Pressure Swing Distillation:Modeling and Optimization显示文摘 | Lee Jihwan Cho Jungho Kim Dongmin | 2011 | Korean J Chem Eng2011，28，2： | 1 |
| 11 | A fully integrated high-power linear CMOS power amplifier with a parallel-series combining transformer显示文摘 | Jihwan Kim Woonyun Kim Kevin T Kornegay | 2012 | IEEE Journal of Solid-state Circuits2012，47，3： | 1 |
| 12 | All-fiber acousto-optic modulator based on a cladding-etched optical fiber for active mode-locking显示文摘An all-fiber acousto-optic modulator(AOM), which features a compact structure and a low-driving voltage, is experimentally demonstrated for the active mode-locking of a fiber laser. The proposed AOM is based on the short length of the cladding-etched fiber, the ends of which are fixed on a slide glass. On top of the cladding-etched fiber, a piezoelectric transducer was overlaid. A chemical wet-etching technique, which is based on a mixed solution of NH_4F and (NH_4)2SO_4, is used to reduce the fiber diameter down to ~25 μm, and the length of the etched section is only 0.5 cm. The fabricated device exhibited a modulation depth of 73.10% at an acoustic frequency of 918.9 kHz and a peak-to-peak electrical voltage of 10 V, while a laser beam was coupled at 1560 nm.By using the prepared AOM within an erbium-doped-fiber ring cavity, the mode-locked pulses with a temporalwidth of 2.66 ps were readily obtained at a repetition rate of 1.838 MHz. | JIHWAN KIM JOONHOI KOO JU HAN LEE | 2017 | Photonics Research2017，5，5： | 0 |
| 13 | Enhanced stability and rate performance of zinc-doped cobalt hexacyanoferrate (CoZnHCF) by the limited crystal growth and reduced distortion显示文摘Cobalt hexacyanoferrate (CoHCF) is a potential cathode for aqueous Na-ion batteries due to its high theoretical specific capacity (170 m Ah g^(-1));however,its lower rate capability and cyclability limit its applications.Structural distortion at a weak N-coordinated crystal field during cycling disintegrates Co,yielding an irreversible reaction.Different Zn amounts ranging 0–1 were added to the Co site to suppress the structural irreversibility of CoHCF,yielding Co_(1-x)Zn_(x)HCF powder;this Zn (x≤0.09) addition reduced the powder’s dimension because the lower four coordination of Zn–N,not the six coordination of Co–N,limits the powder growth.Simultaneously,a small lattice parameter and interaxial angle (~90°) are obtained,implying that a narrower Co_(1-x)Zn_(x)HCF inner structure is formed to accommodate Na ions.Moreover,the electronic conductivity of Co_(1-x)Zn_(x)HCF gradually increased within 0–0.09 range.A smaller particle size with a high surface area leads to a near-surface-limited redox process,similar to a capacitive reaction.Both the surface-limited reaction and electronic conductivity enhances the reversibility due to the smaller charge transfer resistance at the electrode/electrolyte interface caused by Zn addition.Replacing redox-active Co with non-active Zn amount of 0.07 (Co_(1-x)Zn_(x)HCF) slightly reduces the specific capacity from 127 to 119 mAh g^(-1)at 0.1 A g^(-1)due to the shrunken Co charging sites.Rate performance is enhanced by compromising the capacity and reduced distortion,resulting in 81%retention at a 20-times-faster charging rate.Notably,the Co_(1-x)Zn_(x)HCF sample exhibited the good stability while preserving 74%of the initial capacity at 0.5 A g^(-1)after 200 cycles. | Jihwan Kim Seong-Hoon Yi Li Li Sang-Eun Chun | 2022 | Journal of Energy Chemistry2022，31，6： | 0 |
| 14 | Temperature Induces Self-assembly of Silicon Nano/Micro-structure based on Multi-physics Approach显示文摘A three-dimensional dynamic model for nano/micro-fabrications of silicon was presented. With the developed model, the fabrication process of silicon on nothing(SON) structure was quantitatively investigated. We employ a diffuse interface model that incorporates the mechanism of surface diffusion. The mechanism of the fabrication is systematically integrated for high reliability of computational analysis. A semi-implicit Fourier spectral scheme is applied for high efficiency and numerical stability. Moreover, the theoretical analysis provides the guidance that is ordered by the fundamental geometrical design parameters to guide different fabrications of SON structures. The performed simulations suggest a substantial potential of the presented model for a reliable design technology of nano/micro-fabrications. | 张俐楠 CHENG Congxiu SONG Jihwan WU Liqun KIM Dongchoul | 2018 | Journal of Wuhan University of Technology(Materials Science)2018，33，4： | 0 |
| 15 | An Efficient and Spam-Robust Proximity Measure Between Communication Entities显示文摘Electronic communication service providers are obliged to retain communication data for a certain amount of time by their local laws. The retained communication data or the communication logs are used in various applications such as crime detection, viral marketing, analytical study, and so on. Many of these applications rely on effective techniques for analyzing communication logs. In this paper, we focus on measuring the proximity between two communication entities, which is a fundamental and important step toward further analysis of communication logs, and propose a new proximity measure called ESP (Efficient and Spam-Robust Proximity measure). Our proposed measure considers only the (graph-theoretically) shortest paths between two entities and gives small values to those between spam-like entities and others. Thus, it is not only computationally efficient but also spam-robust. By conducting several experiments on real and synthetic datasets, we show that our proposed proximity measure is more accurate, computationally efficient and spam-robust than the existing measures in most cases. | Joo Hyuk Jeon Jihwan Song Jeong Eun Kwon Yoon Joon Lee Man Ho Park Myoung Ho Kim | 2013 | Journal of Computer Science & Technology2013，28，2： | 0 |
| 16 | Strategic Implications for E-Business Organizations in the Ubiquitous Computing Economy显示文摘The ubiquitous economy brings both pros and cons for the organizations. The third space emerged by the development of ubiquitous computing generates new concept of community. The community is tightly coupled with people, products, and systems. Organizational strategies need to be reshaped for the changing environment in the third space and community. Organizational structure also needs to change for community serving organization. Community serving concept equipped with the standardized technology will be essential. One of the key technologies, RFID service will play a key role to acknowledge identification and services required. When the needs for sensing the environment increase, technological requirement such as the ubiquitous sensor network (USN) will be critically needed.. | YUM Jihwan KIM Hyoungdo | 2004 | Journal of Electronic Science and Technology of China2004，2，3： | 0 |
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