Search results for: Jinwoo Lee

Items from 1 to 20 out of 257 results

article

Synergistic Effect of Multilayered Alginate/Poly(SBMA) Coatings on Marine Antifouling Property

Jinwoo Lee, Inho Kim, Sung Min Kang

Macromolecular Bioscience > 24 > 9 > n/a - n/a

Alginate (Alg) coatings have attracted attention as protective layers on solid surfaces for marine antifouling applications due to their strong water binding capability and environmentally friendly characteristics. However, the effectiveness of Alg coatings in preventing marine fouling diminishes upon interaction with divalent cations present in seawater. To address this issue, post‐modification of...

article

9‐1: Invited/Distinguished Paper: Flexible TFT Backplane Development for Extremely Small Bending Radius with Organic ILD and Island TFT Structure

Taewoong Kim, Younggug Seol, Sunhee Lee, Jinhwan Choi, more

SID Symposium Digest of Technical Papers > 55 > 1 > 72 - 75

A new flexible low‐temperature polycrystalline silicon thin film transistors (LTPS TFTs) backplane on PI substrate with organic dielectric layer and low‐stress structure of island TFT is proposed. This new extremely low stress backplane is able to withstand 20,000 inward bending cycles at a bending radius of 1mm without any noticeable TFT degradation. After 200,000 bending inward cycles at bending...

article

Flexible TFT backplane development for extremely small bending radius with organic ILD and novel TFT structures

Taewoong Kim, Younggug Seol, Sunhee Lee, Jinhwan Choi, more

Journal of the Society for Information Display > 32 > 5 > 397 - 405

A new flexible low‐temperature polycrystalline silicon thin film transistors (LTPS TFTs) on PI substrate with organic ILD layer, island TFT, and TFT channel perpendicular to stress direction was proposed. AMOLED display panel manufactured with organic ILD did not show any visible degradation of panel image after outward rolling cycles of 200,000 at rolling radius of 4 mm or inward folding cycles of...

article

Hierarchically Superstructured Anisotropic Carbon Particles by Multiscale Assembly Driven by Spinodal Decomposition

Minkyeong Ban, Jisung Lee, Jioh Kim, Seung‐Jae Shin, more

Small > 20 > 13 > n/a - n/a

Hierarchical superstructures have novel shape‐dependent properties, but well‐defined anisotropic carbon superstructures with controllable size, shape, and building block dimensionality have rarely been accomplished thus far. Here, a hierarchical assembly technique is presented that uses spinodal decomposition (SD) to synthesize anisotropic oblate particles of mesoporous carbon superstructure (o‐MCS)...

article

Bridging the Catalytic Turnover Gap Between Single‐Atom Iron Nanozymes and Natural Enzymes by Engineering the First and Second Shell Coordination

Daeeun Choi, Hyeonjung Jung, Jihye Im, Seung Yeop Yi, more

Advanced Materials > 36 > 13 > n/a - n/a

Single‐atom nanozymes (SAzymes) constitute a promising category of enzyme‐mimicking materials with outstanding catalytic performance. The performance of SAzymes improves through modification of the coordination environments around the metal center. However, the catalytic turnover rates of SAzymes, which are key measures of the effectiveness of active site modifications, remain lower than those of...

article

Boosting Alkaline Hydrogen Oxidation Activity of Ru Single‐Atom Through Promoting Hydroxyl Adsorption on Ru/WC₁₋_x Interfaces

Jinkyu Park, Honghui Kim, Seongbeen Kim, Seung Yeop Yi, more

Advanced Materials > 36 > 4 > n/a - n/a

The sluggish kinetics of the hydrogen oxidation reaction (HOR) in alkaline conditions continue to pose a significant challenge for the practical implementation of anion‐exchange membrane fuel cells. Developing single‐atom catalysts can accelerate the pace of new HOR catalyst discovery for highly cost‐effective and active HOR performance. However, single‐atom catalysts (SACs) for the alkaline HOR have...

article

Advancements of Intense Terahertz Field Focusing on Metallic Nanoarchitectures for Monitoring Hidden Interatomic Gas‐Matter Interactions

Jinwoo Lee, Jongsu Lee, Geon Lee, Dai‐Sik Kim, more

Advanced Materials > 36 > 3 > n/a - n/a

With the advancements of nanotechnology, innovative photonic designs coupled with functional materials provide a unique way to acquire, share, and respond effectively to information. It is found that the simple deposition of a 30 nm‐thick palladium nanofilm on a terahertz (THz) metasurface chip with a 14 nm‐wide effective nanogap of asymmetric materials and geometries allows the tracking of both interatomic...

article

Advancements of Intense Terahertz Field Focusing on Metallic Nanoarchitectures for Monitoring Hidden Interatomic Gas‐Matter Interactions (Adv. Mater. 3/2024)

Jinwoo Lee, Jongsu Lee, Geon Lee, Dai‐Sik Kim, more

Advanced Materials > 36 > 3 > n/a - n/a

Gas Sensing Light‐assisted investigation of gas–matter interactions have been regarded challenging area of study. A real‐time and highly reliable gas‐molecule‐sensing scheme, employing an asymmetric nanogap architecture with distinct compositional metals, allows the study of nanoscale gas dynamics and water forming. Maximized light absorption and an enhanced terahertz field are realized, opening up...

article

High Efficiency Breathable Thermoelectric Skin Using Multimode Radiative Cooling/Solar Heating Assisted Large Thermal Gradient (Small 1/2024)

Yeongju Jung, Seongmin Jeong, Jiyong Ahn, Jinwoo Lee, more

Small > 20 > 1 > n/a - n/a

Thermoelectric Skins In article number 2304338, Jinwoo Lee, Seung Hwan Ko, and co‐workers present a stretchable and breathable flip‐overable thermoelectric skin with Janus structure that can switch between radiative cooling and solar heating mode depending on the solar intensity for enhanced sustainable energy harvesting. This device is based on polydimethylsiloxane‐based electrospun nanofibers that...

article

High Efficiency Breathable Thermoelectric Skin Using Multimode Radiative Cooling/Solar Heating Assisted Large Thermal Gradient

Yeongju Jung, Seongmin Jeong, Jiyong Ahn, Jinwoo Lee, more

Small > 20 > 1 > n/a - n/a

This study proposes a Janus structure‐based stretchable and breathable thermoelectric skin with radiative cooling (RC) and solar heating (SH) functionalities for sustainable energy harvesting. The challenge of the wearable thermoelectric generator arises from the small temperature difference. Thus, this dual‐sided structure maximizes the thermal gradient between the body and the surrounding environment,...

article

Recent Advances in Biodegradable Green Electronic Materials and Sensor Applications

JinKi Min, Yeongju Jung, Jiyong Ahn, Jae Gun Lee, more

Advanced Materials > 35 > 52 > n/a - n/a

As environmental issues have become the dominant agenda worldwide, the necessity for more environmentally friendly electronics has recently emerged. Accordingly, biodegradable or nature‐derived materials for green electronics have attracted increased interest. Initially, metal‐green hybrid electronics are extensively studied. Although these materials are partially biodegradable, they have high utility...

article

Insight into Defect Engineering of Atomically Dispersed Iron Electrocatalysts for High‐Performance Proton Exchange Membrane Fuel Cell

Seung Yeop Yi, Eunho Choi, Ho Yeon Jang, Seonggyu Lee, more

Advanced Materials > 35 > 46 > n/a - n/a

Atomically dispersed and nitrogen coordinated iron catalysts (Fe‐NCs) demonstrate potential as alternatives to platinum‐group metal (PGM) catalysts in oxygen reduction reaction (ORR). However, in the context of practical proton exchange membrane fuel cell (PEMFC) applications, the membrane electrode assembly (MEA) performances of Fe‐NCs remain unsatisfactory. Herein, improved MEA performance is achieved...

article

Effect of child benefit payments on child outcome expenditures in South Korea

Jinwoo Lee, Michael S. Pollard, Rafiq Dossani

Asian Social Work and Policy Review > 17 > 3 > 185 - 195

Extensive research has shown the positive impact of conditional child benefits on child outcomes. However, there is limited work on the impact of universal child benefit payments on how families spend on child outcomes. Our study explores this issue. This study examined the relationship between child benefit payments on child outcome expenditures using longitudinal data from the Korean National Survey...

article

Cooperative Electronic Structure Modulator of Fe Single‐Atom Electrocatalyst for High Energy and Long Cycle Li–S Pouch Cell

Won‐Gwang Lim, Cheol‐Young Park, Hyeonjung Jung, Seoa Kim, more

Advanced Materials > 35 > 10 > n/a - n/a

High‐energy and long cycle lithium–sulfur (Li–S) pouch cells are limited by the insufficient capacities and stabilities of their cathodes under practical electrolyte/sulfur (E/S), electrolyte/capacity (E/C), and negative/positive (N/P) ratios. Herein, an advanced cathode comprising highly active Fe single‐atom catalysts (SACs) is reported to form 320.2 W h kg⁻¹ multistacked Li–S pouch cells with total...

article

Exploring the pH dependence of the SARS‐CoV‐2 complete fusion domain and the role of its unique structural features

Daniel Birtles, Anna E. Oh, Jinwoo Lee

Protein Science > 31 > 9 > n/a - n/a

SARS‐CoV‐2 may enter target cells through the process of membrane fusion at either the plasma (~pH 7.4–7.0) or endosomal (~pH 6.5–5.0) membrane in order to deliver its genetic information. The fusion domain (FD) of the spike glycoprotein is responsible for initiating fusion and is thus integral to the viral life cycle. The FD of SARS‐CoV‐2 is unique in that it consists of two structurally distinctive...

article

A Versatile Strategy for Achieving Fast‐Charging Batteries via Interfacial Engineering: Pseudocapacitive Potassium Storage without Nanostructuring

Seoa Kim, Hyeonjung Jung, Won‐Gwang Lim, Eunho Lim, more

Small > 18 > 27 > n/a - n/a

The rapid transport of alkali ions in electrodes is a long‐time dream for fast‐charging batteries. Though electrode nanostructuring has increased the rate‐capability, its practical use is limited because of the low tap density and severe irreversible reactions. Therefore, development of a strategy to design fast‐charging micron‐sized electrodes without nanostructuring is of significant importance...

article

Rational Development of Co‐Doped Mesoporous Ceria with High Peroxidase‐Mimicking Activity at Neutral pH for Paper‐Based Colorimetric Detection of Multiple Biomarkers

Phuong Thy Nguyen, Junsang Lee, Ara Cho, Min Su Kim, more

Advanced Functional Materials > 32 > 21 > n/a - n/a

Peroxidase‐mimicking nanozymes have been extensively studied, however, their application is limited by the requirement for an acidic pH. Herein, the development of Co‐doped mesoporous cerium oxide (Co‐m‐ceria) is reported, which operates optimally at a near‐neutral pH and exhibits a peroxidase‐like catalytic efficiency that is 600‐times higher than that of pristine m‐ceria. Density functional theory...

article

Engineered Nanoenzymes with Multifunctional Properties for Next‐Generation Biological and Environmental Applications

Puranjan Mishra, Junsang Lee, Deepak Kumar, Ricardo O. Louro, more

Advanced Functional Materials > 32 > 8 > n/a - n/a

As a powerful tool, nanoenzyme electrocatalyst broadens the ways to explore bioinspired solutions to the world's energy and environmental concerns. Efforts of fashioning novel nanoenzymes for effective electrode functionalization is generating innovative viable catalysts with high catalytic activity, low cost, high stability and versatility, and ease of production. High chemo‐selectivity and broad...

article

Thermo‐Haptic Materials and Devices for Wearable Virtual and Augmented Reality

Jinwoo Lee, Dongkwan Kim, Heayoun Sul, Seung Hwan Ko

Advanced Functional Materials > 31 > 39 > n/a - n/a

The current generation of virtual and augmented realities (VR/AR) has substantially advanced in the past decade because of the rapid development of converging technologies in various engineering and scientific fields. However, the current VR/AR technologies rely mainly on visual and auditory senses to physically replicate the virtual environment, although tactile senses play a significant role in...

article

Biomass‐Derived P, N Self‐Doped Hard Carbon as Bifunctional Oxygen Electrocatalyst and Anode Material for Seawater Batteries

Jioh Kim, Jinkyu Park, Jisung Lee, Won‐Gwang Lim, more

Advanced Functional Materials > 31 > 22 > n/a - n/a

Owing to the demand for low‐cost batteries with safety, Na‐seawater batteries (SWBs) have received considerable attention as a new energy storage system (ESS). In SWB, it is necessary to use an advanced oxygen evolution/reduction reaction (OER/ORR) catalyst for high energy efficiency (EE) in the cathode and a good sodium storage material for a highly reversible capacity in the anode part. In this...

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INFONA - science communication portal

Search results for: Jinwoo Lee

Synergistic Effect of Multilayered Alginate/Poly(SBMA) Coatings on Marine Antifouling Property

9‐1: Invited/Distinguished Paper: Flexible TFT Backplane Development for Extremely Small Bending Radius with Organic ILD and Island TFT Structure

Flexible TFT backplane development for extremely small bending radius with organic ILD and novel TFT structures

Hierarchically Superstructured Anisotropic Carbon Particles by Multiscale Assembly Driven by Spinodal Decomposition

Bridging the Catalytic Turnover Gap Between Single‐Atom Iron Nanozymes and Natural Enzymes by Engineering the First and Second Shell Coordination

Boosting Alkaline Hydrogen Oxidation Activity of Ru Single‐Atom Through Promoting Hydroxyl Adsorption on Ru/WC₁₋_x Interfaces

Advancements of Intense Terahertz Field Focusing on Metallic Nanoarchitectures for Monitoring Hidden Interatomic Gas‐Matter Interactions

Advancements of Intense Terahertz Field Focusing on Metallic Nanoarchitectures for Monitoring Hidden Interatomic Gas‐Matter Interactions (Adv. Mater. 3/2024)

High Efficiency Breathable Thermoelectric Skin Using Multimode Radiative Cooling/Solar Heating Assisted Large Thermal Gradient (Small 1/2024)

High Efficiency Breathable Thermoelectric Skin Using Multimode Radiative Cooling/Solar Heating Assisted Large Thermal Gradient

Recent Advances in Biodegradable Green Electronic Materials and Sensor Applications

Insight into Defect Engineering of Atomically Dispersed Iron Electrocatalysts for High‐Performance Proton Exchange Membrane Fuel Cell

Effect of child benefit payments on child outcome expenditures in South Korea

Cooperative Electronic Structure Modulator of Fe Single‐Atom Electrocatalyst for High Energy and Long Cycle Li–S Pouch Cell

Exploring the pH dependence of the SARS‐CoV‐2 complete fusion domain and the role of its unique structural features

A Versatile Strategy for Achieving Fast‐Charging Batteries via Interfacial Engineering: Pseudocapacitive Potassium Storage without Nanostructuring

Rational Development of Co‐Doped Mesoporous Ceria with High Peroxidase‐Mimicking Activity at Neutral pH for Paper‐Based Colorimetric Detection of Multiple Biomarkers

Engineered Nanoenzymes with Multifunctional Properties for Next‐Generation Biological and Environmental Applications

Thermo‐Haptic Materials and Devices for Wearable Virtual and Augmented Reality

Biomass‐Derived P, N Self‐Doped Hard Carbon as Bifunctional Oxygen Electrocatalyst and Anode Material for Seawater Batteries

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