Search Results - "Hwan Seok Chung"

Hybrid carbon thermal interface materials for thermoelectric generator devices by Chung, Seok-Hwan, Kim, Jong Tae, Kim, Dong Hwan

“…Thermal interface materials (TIMs) are extensively used in electronic devices as efficient heat transfer materials. We fabricated all-carbon TIMs by…”
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Performance Improvement of Multi-IFoF-Based Mobile Fronthaul Using Dispersion-Induced Distortion Mitigation With IF Optimization by Han, Changyo, Sung, Minkyu, Cho, Seung-Hyun, Seok Chung, Hwan, Kim, Sun Me, Lee, Jong Hyun

“…Nowadays, there have been many research works on multiple-intermediate-frequency-over-fiber (multi-IFoF)-based mobile fronthaul link to accommodate explosive…”
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Impact of Quadrature Imbalance in Optical Coherent QPSK Receiver by Sun Hyok Chang, Sun Hyok Chang, Hwan Seok Chung, Hwan Seok Chung, Kwangjoon Kim, Kwangjoon Kim

“…In this letter, we present the impact of quadrature imbalance in an optical coherent quadrature phase-shift-keying (QPSK) receiver. Arbitrary conjugate…”
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Thermoelectric properties of PEDOT: PSS and acid-treated SWCNT composite films by Chung, Seok-Hwan, Kim, Dong Hwan, Kim, Hanna, Kim, Hoyoung, Jeong, Sang Won

“…We investigated the thermoelectric properties of composite films that consist of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) and…”
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Transmission of Multiple HD-TV Signals Over a Wired/Wireless Line Millimeter-Wave Link With 60 GHz by Hwan Seok Chung, Hwan Seok Chung, Sun Hyok Chang, Sun Hyok Chang, Jong Dae Park, Jong Dae Park, Moo-Jung Chu, Moo-Jung Chu, Kwangjoon Kim, Kwangjoon Kim

“…For the first time to our knowledge, we demonstrate a transmission of 37 channels a 64 quadratic-amplitude-modulation (QAM)-coded high-definition television…”
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Improved thermal conductivity of carbon-based thermal interface materials by high-magnetic-field alignment by Chung, Seok-Hwan, Kim, Hoyoung, Jeong, Sang Won

“…Carbon-based fillers for thermal interface materials (TIMs) are attractive due to their advantages such as high thermal conductivity, low thermal expansion,…”
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Energy-Efficient Virtual Base Station Formation in Optical-Access-Enabled Cloud-RAN by Xinbo Wang, Thota, Saigopal, Tornatore, Massimo, Hwan Seok Chung, Han Hyub Lee, Soomyung Park, Mukherjee, Biswanath

“…In recent years, the increasing traffic demand in radio access networks (RANs) has led to considerable growth in the number of base stations (BSs), posing a…”
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Polymer-dispersed liquid crystal devices with graphene electrodes by Chung, Seok-Hwan, Noh, Hee Yeon

“…Although polymer-dispersed liquid crystal (PDLC) devices have considerable potential application in smart windows, the high material cost of the indium tin…”
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High-temperature Bi2Te3 thermoelectric generator fabricated using Cu nanoparticle paste bonding by Chung, Seok-Hwan, Kim, Jong Tae, Kim, Hoyoung, Kim, Jeongmin, Kim, Dong Hwan

“…•The application of copper nanoparticle paste is investigated.•The CNP is used as bonding material for Cu electrodes and thermoelectric materials.•The CNP…”
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Bidirectional two colored light emission from stress-activated ZnS-microparticles-embedded polydimethylsiloxane elastomer films by Jeong, Soon Moon, Song, Seongkyu, Joo, Kyung-Il, Jeong, Jaewook, Chung, Seok-Hwan

“…Bidirectional two-colored mechanoluminescent light emission has been demonstrated by unifying two polydimethylsiloxane elastomer layers functionalized with…”
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40-Gb/s NRZ wavelength conversion with 3R regeneration using an EA modulator and SOA polarization-discriminating delay interferometer by Hwan Seok Chung, Inohara, R., Nishimura, K., Usami, M.

“…We propose and demonstrate, for the first time, to our knowledge, a 40-Gb/s nonreturn-to-zero wavelength converter with 3R regeneration based on an…”
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Low-temperature Cu-to-Cu electrode bonding by sintering Cu core-Ag shell nanoparticle paste by Chung, Seok-Hwan, Kim, Jong Tae, Jeong, Sang Won

“…Metal-to-metal bonding is critical in modern electronics technology such as 3D-IC packaging and automotive electronics. In this study, we applied Cu core-Ag…”
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High Speed and Low Latency Passive Optical Network for 5G Wireless Systems by Kim, KwangOk, Doo, Kyeong-Hwan, Lee, Han Hyub, Kim, SeungHwan, Park, Heuk, Oh, Jung-Yeol, Chung, Hwan Seok

“…To meet the latency and bandwidth requirements of 5G mobile services and next-generation residential/business services, we present high speed and low-latency…”
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Enhanced blue photoluminescence realized by copper diffusion doping of ZnO thin films by Allabergenov, Bunyod, Chung, Seok-Hwan, Jeong, Soon Moon, Kim, Sungjin, Choi, Byeongdae

“…ZnO thin films with blue photoluminescence (PL) have been fabricated through Cu diffusion doping. A CuO sub(x)-ZnO mixture, and Cu/ZnO double layer, films were…”
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Magnetic alignment of graphite platelets in polyimide matrix toward a flexible electronic substrate with enhanced thermal conductivity by Chung, Seok-Hwan, Kim, Jong Tae, Kim, Hoyoung, Kim, Dong Hwan, Jeong, Sang Won

“…A soft and stable substrate is an essential component for realizing flexible electronics and displays. We fabricated flexible substrate films by compositing…”
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Dynamic bandwidth and wavelength allocation scheme for next-generation wavelength-agile EPON by Wang, Lin, Wang, Xinbo, Tornatore, Massimo, Chung, Hwan Seok, Lee, Han Hyub, Park, Soomyung, Mukherjee, Biswanath

“…Recently, the IEEE 802.3 Ethernet Working Group has classified three architectures for the nextgeneration Ethernet passive optical network (NG-EPON). They are…”
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Color-tunable stacked organic light-emitting diode with semi-transparent metal electrode by Chung, Seok-Hwan, Noh, Hee Yeon

“…Stacked organic light-emitting diode (OLED) devices with two terminals have been fabricated by successive application of solution coating and vacuum…”
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Mode- and wavelength-division multiplexed transmission using all-fiber mode multiplexer based on mode selective couplers by Chang, Sun Hyok, Chung, Hwan Seok, Ryf, Roland, Fontaine, Nicolas K, Han, Changyo, Park, Kyung Jun, Kim, Kwangjoon, Lee, Jyung Chan, Lee, Jong Hyun, Kim, Byoung Yoon, Kim, Young Kie

“…We propose all-fiber mode multiplexer composed of two consecutive LP₁₁ mode selective couplers that allows for the multiplexing of LP₀₁ mode and two-fold…”
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Comparisons of Audiologic Characteristics in Patients with Continuous and Intermittent Tinnitus by Chung, Seok Hwan, Kim, Sung Soo, Kim, Sang Hoon, Yeo, Seung Geun

“…Background: No studies to date have compared audiologic characteristics in patients with continuous and intermittent tinnitus. The present study classified…”
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Electrically tunable birefringence of a polymer composite with long-range orientational ordering of liquid crystals by Choi, Byeongdae, Song, Seongkyu, Jeong, Soon Moon, Chung, Seok-Hwan, Glushchenko, Anatoliy

“…We report an optical film with electrically tunable birefringence in which the liquid crystals (LCs), mixed with the host polymer, form long-range ordering…”
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