Search Results - "Kwac, Lee Ku"

Advances in physicochemical characterization of lead-free hybrid perovskite [NH3(CH2)3NH3]CuBr4 crystals by Lim, Ae Ran, Kwac, Lee Ku

“…To support the development of eco-friendly hybrid perovskite solar cells, structural, thermal, and physical properties of the lead-free hybrid perovskite [NH 3…”
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Electrochemical behavior of pitch-based activated carbon fibers for electrochemical capacitors by Lee, Hye-Min, Kwac, Lee-Ku, An, Kay-Hyeok, Park, Soo-Jin, Kim, Byung-Joo

“…•Electrode materials for electrochemical capacitors were developed using pitch-based activated carbon fibers with steam activation.•Activated carbon fibers…”
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Improved Optical Efficiency of 850-nm Infrared Light-Emitting Diode with Reflective Transparent Structure by Lee, Hyung-Joo, Park, Jin-Young, Kwac, Lee-Ku, Lee, Jongsu

“…This study investigated a reflective transparent structure to improve the optical efficiency of 850 nm infrared light-emitting diodes (IR-LEDs), by effectively…”
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Improvement of Near-Infrared Light-Emitting Diodes' Optical Efficiency Using a Broadband Distributed Bragg Reflector with an AlAs Buffer by Lee, Hyung-Joo, Park, Jin-Young, Kwac, Lee-Ku, Lee, Jongsu

“…This study developed an advanced 850 nm centered distributed Bragg reflector (DBR) (broadband DBR) composed of nanomaterial-based multiple structures to…”
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Graphitization of Oak-Tree-Based White Charcoals by High Temperature Heat Treatment by Park, Young-Nam, Lee, Jae Jun, Kwac, Lee-Ku, Ryu, Seung Kon, Kim, Hong-Gun

“…Oak-tree-based white charcoals were subjected to high-temperature heat treatment at up to 2400 °C to analyze changes in their surface morphology and internal…”
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Thermotropic liquid crystalline copolyester fibers according to various heat treatment conditions by Lee, Won Jun, Kwac, Lee Ku, Kim, Hong Gun, Chang, Jin-Hae

“…Thermotropic liquid crystal copolyester (TLCP) was synthesized using a melt polymerization method, with a molar ratio composition of 2,5-diethoxy terephthalic…”
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Study on P-AlGaAs/Al/Au Ohmic Contact Characteristics for Improving Optoelectronic Response of Infrared Light-Emitting Device by Lee, Hyung-Joo, Shim, Jae-Sam, Park, Jin-Young, Kwac, Lee-Ku, Seo, Chang-Ho

“…The Al/Au alloy was investigated to improve the ohmic characteristic and light efficiency of reflective infrared light-emitting diodes (IR-LEDs). The Al/Au…”
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Enhanced mechanical properties of anti-corrosive concrete coated by milled carbon nanofiber-reinforced composite paint by Song, Jeong-Sang, Kwac, Lee-Ku, Kim, Hong-Gun, Ryu, Seung-Kon

“…In this study, a milled carbon nanofiber-reinforced composite paint was prepared to enhance the anti-corrosive properties of concrete structures…”
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Correction: Lee et al. Improved Optical Efficiency of 850-nm Infrared Light-Emitting Diode with Reflective Transparent Structure. Micromachines 2023, 14 , 1586 by Lee, Hyung-Joo, Park, Jin-Young, Kwac, Lee-Ku, Lee, Jongsu

“…In the original publication [...]…”
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A Study on the Improvement of Filter Performance to Remove Indoor Air Pollution by Kim, Yong-Sun, Kim, Hong-Gun, Kwac, Lee-Ku, Ko, Sang-Cheol

“…This study carried out a simplified baffle filter shape study on the over the range (OTR) filter used in a general kitchen. In order to improve the filter’s…”
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Correlation between Drop Impact Energy and Residual Compressive Strength According to the Lamination of CFRP with EVA Sheets by Go, Sun-Ho, Lee, Min-Sang, Hong, Chang-Gi, Kwac, Lee-Ku, Kim, Hong-Gun

“…Carbon-fiber-reinforced plastic is an important building material; however, its application is limited because of its brittleness, leading to vulnerability…”
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The Development of Evaluation Algorithm for Blood Infection Degree by Kim, Chang-Hyun, Kwac, Lee-Ku, Kim, Hong-Gun

“…In this paper, a series of processes are performed to assess the degree of infection in a subject’s blood infected with malaria. This process improves the…”
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Dependence of Laminar Flow Fluctuation on Indium Composition in In0.07GaAs/GaAs Quantum Wells for 940-nm Infrared Light-Emitting Diodes by Kim, Dae-Kwang, Lee, Hyung-Joo, An, Won-Chan, Kim, Hong-Gun, Kwac, Lee-Ku

“…The effect of laminar flow fluctuation on the indium composition of In0.07GaAs quantum wells was investigated in order to obtain a higher output power from…”
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Atomic layer coating of hafnium oxide on carbon nanotubes for high-performance field emitters by Il Song, Young, Yang, Cheol-Min, Ku Kwac, Lee, Gun Kim, Hong, Ahm Kim, Yoong

“…Carbon nanotubes coated with hafnium oxide exhibit excellent electron emission characteristics, including a low turn-on voltage, a high field enhancement…”
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Effects of organoclay on colorless and transparent polyimide nanocomposites: thermomechanical properties, morphology, and optical transparency by Na, Yeji, Kwac, Lee Ku, Kim, Hong Gun, Joo, Yong Lak, Chang, Jin-Hae

“…Although aromatic polyimide (PI) exhibits excellent mechanical performance and thermal stability, its dark color limits applicability in optical displays…”
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Effect of organoclay on the physical properties of colorless and transparent copoly(amide imide) nanocomposites by Na, Changyub, Kwac, Lee Ku, Kim, Hong Gun, Chang, Jin-Hae

“…Copoly(amic acid) was prepared using the diamine monomer N , N ′-[2,2′-bis(trifluoromethyl)-4,4′-biphenylene]bis(4-aminobenzamide) ( TFAB ) and the anhydride…”
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Improved optical efficiency of GaAs-based infrared vertical-cavity surface-emitting laser enabled by combining a metallic reflector and a Bragg reflector by Jang, In-Kyu, Lee, Hyung-Joo, Kim, Dae-Kwang, Kwac, Lee-Ku, Cho, Sung Woon

“…The use of coupled reflectors was investigated to improve the device performance of GaAs-based 860 nm vertical-cavity surface-emitting lasers (VCSELs). Here,…”
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Nanostructured carbon and copper oxide: Synchronous and facile synthesis from a single source and multidimensional applications by Akter, Jeasmin, Abu Hanif, Md, Lee, Insup, Shrestha, Santu, Pandey, Anil, Gyawali, Narayan, Chaizul, Syawalina, Fualo, Vince, Ku Kwac, Lee, Ryang Hahn, Jae

“…[Display omitted] •C-NPs and CuO-NRs are prepared simultaneously from a single source.•Hydrophilic C-NPs show excitation-dependent and -independent PL…”
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Effects of various types of organo-mica on the physical properties of polyimide nanocomposites by Jeon, Hara, Na, Changyub, Kwac, Lee Ku, Kim, Hong Gun, Chang, Jin-Hae

“…Poly(amic acid) (PAA) was synthesized using dianhydride 4,4’-oxydiphthalic anhydride and diamine 3,3'-dihydroxybenzidine, and polyimide (PI) hybrid films were…”
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Carbon Papers from Tall Goldenrod Cellulose Fibers and Carbon Nanotubes for Application as Electromagnetic Interference Shielding Materials by Park, Jihyun, Kwac, Lee Ku, Kim, Hong Gun, Shin, Hye Kyoung

“…To transform tall goldenrods, which are invasive alien plant that destroy the ecosystem of South Korea, into useful materials, cellulose fibers isolated from…”
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