Search results for: Hyun Jong Kim

Items from 1 to 20 out of 97 results

article

New Trends in Nanoarchitectured SERS Substrates: Nanospaces, 2D Materials, and Organic Heterostructures

Olga Guselnikova, Hyunsoo Lim, Hyun‐Jong Kim, Sung Hyun Kim, more

Small > 18 > 25 > n/a - n/a

This article reviews recent fabrication methods for surface‐enhanced Raman spectroscopy (SERS) substrates with a focus on advanced nanoarchitecture based on noble metals with special nanospaces (round tips, gaps, and porous spaces), nanolayered 2D materials, including hybridization with metallic nanostructures (NSs), and the contemporary repertoire of nanoarchitecturing with organic molecules. The...

article

Digital Laser Micropainting: Digital Laser Micropainting for Reprogrammable Optoelectronic Applications (Adv. Funct. Mater. 1/2021)

Younggeun Lee, Jinhyeong Kwon, Jaemook Lim, Wooseop Shin, more

Advanced Functional Materials > 31 > 1 > n/a - n/a

In article number 2006854, Seung Hwan Ko, Sukjoon Hong, and co‐workers propose a digital laser micropainting technique, based on controlled thin‐film interference, through direct laser growth of the absorbing metal oxide layer on a metallic reflector. Specific wavelength‐dependent photoresponsivity can be assigned, erased, and reassigned to an optoelectronic device by the successive application of...

article

Digital Laser Micropainting for Reprogrammable Optoelectronic Applications

Younggeun Lee, Jinhyeong Kwon, Jaemook Lim, Wooseop Shin, more

Advanced Functional Materials > 31 > 1 > n/a - n/a

Structural coloration is closely related to the progress of innovative optoelectronic applications, but the absence of direct, on‐demand, and rewritable coloration schemes has impeded advances in the relevant area, particularly including the development of customized, reprogrammable optoelectronic devices. To overcome these limitations, a digital laser micropainting technique, based on controlled...

article

GADD45β plays a protective role in acute lung injury by regulating apoptosis in experimental sepsis in vivo

Sung‐Je Moon, Hyun‐Yong Kim, Yong‐Hoon Kim, Kyoung‐Shim Kim, more

Journal of Cellular Physiology > 233 > 10 > 7128 - 7138

Sepsis is a systemic inflammatory response syndrome due to microbial infection. Growth arrest and DNA‐damage‐inducible 45 beta (GADD45β) are induced by genotoxic stress and inflammatory cytokines. However, the role of GADD45β during bacterial infection remains unclear. This study was aimed at investigating the role of GADD45β in sepsis. We used GADD45β‐knockout (KO) mice and C57BL/6J wild‐type (WT)...

article

Correction to: Optimization of Controllable Factors in the Aluminum Silicon Eutectic Paste and Rear Silicon Nitride Mono-Passivation Layer of PERC Solar Cells

Sungeun Park, Hyomin Park, Dongseop Kim, JungYup Yang, more

Metals and Materials International > 2018 > 24 > 5 > 1192-1192

The original version of this article unfortunately contained a mistake. The acknowledgements section was incomplete. The correct information is given below.

article

Optimization of Controllable Factors in the Aluminum Silicon Eutectic Paste and Rear Silicon Nitride Mono-Passivation Layer of PERC Solar Cells

Sungeun Park, Hyomin Park, Dongseop Kim, JungYup Yang, more

Metals and Materials International > 2018 > 24 > 3 > 664-671

Passivated emitter and rear contact (PERC) is a promising technology owing to high efficiency can be achieved with p-type wafer and their easily applicable to existing lines. In case of using p-type mono wafer, 0.5–1% efficiency increase is expected with PERC technologies compared to existing Al BSF solar cells, while for multi-wafer solar cells it is 0.5–0.8%. We addressed the optimization of PERC...

article

Creation of mesoporous defects in a microporous metal-organic framework by an acetic acid-fragmented linker co-assembly and its remarkable effects on methane uptake

Seo-Yul Kim, Ah-Reum Kim, Jung Woon Yoon, Hyun-Jong Kim, more

Chemical Engineering Journal > 2018 > 335 > C > 94-100

We propose for the first time an acetic acid (AcOH)-fragmented linker co-assembly strategy to create mesoporous defects in a microporous metal–organic framework (MOF), HKUST-1. By using various methods, including ¹H NMR, FT-IR and XPS, we confirmed the successful co-assembly of AcOH fragments into the HKUST-1 structure. The prepared AcOH-fragmented HKUST-1 materials showed improved methane uptake...

article

Gapless point back surface field for the counter doping of large‐area interdigitated back contact solar cells using a blanket shadow mask implantation process

Young‐Su Kim, Chanbin Mo, Doo Youl Lee, Sung Chan Park, more

Progress in Photovoltaics: Research and Applications > 25 > 12 > 989 - 995

Gapless interdigitated back contact (IBC) solar cells were fabricated with phosphorous back surface field on a boron emitter, using an ion implantation process. Boron emitter (boron ion implantation) is counter doped by the phosphorus back surface field (BSF) (phosphorus ion implantation) without gap. The gapless process step between the emitter and BSF was compared to existing IBC solar cell with...

article

Non-conventional Pt-Cu alloy/carbon paper electrochemical catalyst formed by electrodeposition using hydrogen bubble as template

Youngkwang Kim, Hyunjoon Lee, Taeho Lim, Hyun-Jong Kim, more

Journal of Power Sources > 2017 > 364 > C > 16-22

With emerging stability issues in fuel cell technology, a non-conventional catalyst not supported on carbon materials has been highlighted because it can avoid negative influences of carbon support materials on the stability, such as carbon corrosion. The nanostructured thin film catalyst is representative of non-conventional catalysts, which shows improved stability, enhanced mass specific activity,...

article

Performance of Pd Cathode Catalyst Electrodeposited on Gas Diffusion Layer in Polymer Electrolyte Membrane Fuel Cells

Sujin Gok, Youngkwang Kim, Taeho Lim, Hyun-Jong Kim, more

Electrocatalysis > 2018 > 9 > 1 > 59-66

Performance of a polymer electrolyte membrane fuel cell with a Pd cathode catalyst was systemically investigated in this study. The Pd catalyst was directly formed on a gas diffusion layer by using electrodeposition (Pd/GDL). The electrodeposition formed aggregates of Pd nanoparticles on a gas diffusion layer with the preferred orientation of Pd(111) and Pd(200). In addition, the Pd aggregates mainly...

article

Reliability of amorphous InGaZnO TFTs with ITO local conducting buried layer for BEOL power transistors

Hyun Jong Kim, Byung Sang Song, Won-Ju Cho, Jong Tae Park

Microelectronics Reliability > 2017 > 76-77 > C > 333-337

The device reliability of a-IGZOTFTs with ITO local conducting buried layer (LCBL) has been investigated under positive gate bias stress and hot carrier stress for the application as BEOL power transistors. The drive current of a-IGZO TFTs could be controlled by the modulation of ITO LCBL thickness and distance under source/drain electrode. The threshold voltage shifts, the drain current degradation,...

article

Agrimonia pilosa leaf extract accelerates skin barrier restoration by activation of transient receptor potential vanilloid 3

Yu-Ran Nam, Hyun Jong Kim, Young-Mi Kim, Young-Won Chin, more

Journal of Dermatological Science > 2017 > 86 > 3 > 255-258

article

Differential modulation of TWIK-related K+ channel (TREK) and TWIK-related acid-sensitive K+ channel 2 (TASK2) activity by pyrazole compounds

Hyun Jong Kim, Joohan Woo, Yuran Nam, Joo Hyun Nam, more

European Journal of Pharmacology > 2016 > 791 > C > 686-695

Pyrazole derivatives were originally suggested as selective blockers of the transient receptor potential cation 3 (TRPC3) and channel. In particular, pyr3 and 10 selectively inhibit TRPC3, whereas pyr2 (BTP2) and 6 inhibit ORAI1. However, their effects on background K⁺ channel activity have not been elucidated. In this study, the effects of BTP2, pyr3, pyr6, and pyr10 were studied on cloned human...

chapter

Photocatalytic Application of TiO₂ for Air Cleaning

Yong-Gun Shul, Hak-Soo Kim, Hyun-Jong Kim, Myung-Keun Han

Nanostructure Science and Technology > Environmentally Benign Photocatalysts > Photocatalytic Reactions for Environmentally-Harmonious Applications > 415-436

Photocatalytic process has been applied to the treatment of air pollutants. It is necessary to enhance the photocatalytic activity of TiO₂ and design of photocatalytic system, for the practical application. The practical aspects for the application of TiO₂ were discussed. Various species, such as transition metal ion, noble metal, metal oxide, and anion, could modify the surface of TiO₂ and improve...

chapter

ICT convergence-based application service development to support the re-configurability of door trim assembly line

Hyun Jong Kim, Yong Kwi Lee, Young Ae Jeon, Ji Yeon Son

2016 International Conference on Information and Communication Technology Convergence (ICTC) > 1126 - 1128

2016 International Conference on Information and Communication Technology Convergence (ICTC)

In this paper, We propose the ICT convergence-based application service to support the re-configurability of door trim assembly line. There is a need for a scheme capable of producing a variety of product models in an assembly line because recent car market has been converted from massive production massive consumption to small production small consumption. So, we develop an application service for...

article

Pharmacological modulation of sphingosine kinase 1 activity enhances epidermal innate immunity through cathelicidin production

Kyungho Park, Sin Hee Lee, Jeong Eun Jeon, Bong-Woo Kim, more

Journal of Dermatological Science > 2016 > 84 > 1 > e71

article

Preparation of onion-like Pt-terminated Pt–Cu bimetallic nano-sized electrocatalysts for oxygen reduction reaction in fuel cells

Taeho Lim, Ok-Hee Kim, Yung-Eun Sung, Hyun-Jong Kim, more

Journal of Power Sources > 2016 > 316 > C > 124-131

Onion-like Pt-terminated Pt–Cu bimetallic nano-sized electrocatalysts (Pt/Cu/Pt/C) were synthesized by using an electroless deposition method. The synthesized Pt/Cu/Pt/C consisted of a Pt-enriched shell, a sandwiched Pt–Cu alloy layer, and a Pt core. The Pt/Cu/Pt/C showed higher electrocatalytic activity toward oxygen reduction reaction in half-cell test than that of commercial Pt/C due to an electronic...

article

Enhancement of catalytic durability through nitrogen-doping treatment on the CNF-derivatized ACF support for high temperature PEMFC

Yukwon Jeon, Joo-Il Park, Jinhee Ok, Altansukh Dorjgotov, more

International Journal of Hydrogen Energy > 2016 > 41 > 16 > 6864-6876

As a new carbon support for high temperature – proton exchange membrane fuel cell (HT-PEMFC), the nitrogen doped CNF/ACF (N/CNF/ACF) was synthesized by coating and annealing the polypyrrole to the surface of carbon nanofiber (CNF) grown on activated carbon fiber (ACF). The durability and electrochemical performance of Pt/N/CNF/ACF and commercial Pt/C was examined and compared with various analytical...

article

Metal–organic frameworks with high working capacities and cyclic hydrothermal stabilities for fresh water production

Seung-Ik Kim, Tae-Ung Yoon, Min-Bum Kim, Seung-Joon Lee, more

Chemical Engineering Journal > 2016 > 286 > C > 467-475

In this work, we evaluated the working capacities of eight hydrothermally stable metal–organic frameworks (MOFs) for water adsorption under typical humidity conditions in three representative dry regions. Remarkably, three MIL-100(M) materials (M=Cr, Al, and Fe) and MIL-101(Cr) exhibited very high working capacities for medium and high humidity conditions due to their large surface areas. All of the...

chapter

An Active Queue Management for QoS Guarantee of the High Priority Service Class

Hyun Jong Kim, Jae Chan Shim, Hwa-Suk Kim, Kee Seong Cho, more

Communications in Computer and Information Science > Communication and Networking > 37-45

In this paper, we propose the active queue management mechanism (Active-WRED) for guaranteeing the quality of the high priority service class (VoIP or IPTV) in the multi-class traffic service environment. In the congestion situation, this mechanism increases the drop probability of the low priority traffic and reduces the drop probability of the high priority traffic; therefore it can guarantee the...

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INFONA - science communication portal

Search results for: Hyun Jong Kim

New Trends in Nanoarchitectured SERS Substrates: Nanospaces, 2D Materials, and Organic Heterostructures

Digital Laser Micropainting: Digital Laser Micropainting for Reprogrammable Optoelectronic Applications (Adv. Funct. Mater. 1/2021)

Digital Laser Micropainting for Reprogrammable Optoelectronic Applications

GADD45β plays a protective role in acute lung injury by regulating apoptosis in experimental sepsis in vivo

Correction to: Optimization of Controllable Factors in the Aluminum Silicon Eutectic Paste and Rear Silicon Nitride Mono-Passivation Layer of PERC Solar Cells

Optimization of Controllable Factors in the Aluminum Silicon Eutectic Paste and Rear Silicon Nitride Mono-Passivation Layer of PERC Solar Cells

Creation of mesoporous defects in a microporous metal-organic framework by an acetic acid-fragmented linker co-assembly and its remarkable effects on methane uptake

Gapless point back surface field for the counter doping of large‐area interdigitated back contact solar cells using a blanket shadow mask implantation process

Non-conventional Pt-Cu alloy/carbon paper electrochemical catalyst formed by electrodeposition using hydrogen bubble as template

Performance of Pd Cathode Catalyst Electrodeposited on Gas Diffusion Layer in Polymer Electrolyte Membrane Fuel Cells

Reliability of amorphous InGaZnO TFTs with ITO local conducting buried layer for BEOL power transistors

Agrimonia pilosa leaf extract accelerates skin barrier restoration by activation of transient receptor potential vanilloid 3

Differential modulation of TWIK-related K+ channel (TREK) and TWIK-related acid-sensitive K+ channel 2 (TASK2) activity by pyrazole compounds

Photocatalytic Application of TiO₂ for Air Cleaning

ICT convergence-based application service development to support the re-configurability of door trim assembly line

Pharmacological modulation of sphingosine kinase 1 activity enhances epidermal innate immunity through cathelicidin production

Preparation of onion-like Pt-terminated Pt–Cu bimetallic nano-sized electrocatalysts for oxygen reduction reaction in fuel cells

Enhancement of catalytic durability through nitrogen-doping treatment on the CNF-derivatized ACF support for high temperature PEMFC

Metal–organic frameworks with high working capacities and cyclic hydrothermal stabilities for fresh water production

An Active Queue Management for QoS Guarantee of the High Priority Service Class

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