A5100323622- Organic Light-Emitting Diodes Research
- CO2 Reduction Techniques and Catalysts
- Electrocatalysts for Energy Conversion
- Ionic liquids properties and applications
- Organic Electronics and Photovoltaics
- Lanthanide and Transition Metal Complexes
- Carbon dioxide utilization in catalysis
- Optical Network Technologies
- Advanced battery technologies research
- Conducting polymers and applications
- Luminescence and Fluorescent Materials
- Semiconductor Lasers and Optical Devices
- Engineering Applied Research
- Structural Engineering and Vibration Analysis
- Intellectual Capital and Performance Analysis
- IoT Networks and Protocols
- Advanced Thermoelectric Materials and Devices
- Advanced Wireless Communication Technologies
- Marine and Coastal Research
- Structural Load-Bearing Analysis
- Internet of Things and Social Network Interactions
- Electrohydrodynamics and Fluid Dynamics
- Maritime Ports and Logistics
- Educational Systems and Policies
- Advancements in Solid Oxide Fuel Cells
Hanyang University
2025
Yonsei University
2024
University of Toronto
2023-2024
Pohang University of Science and Technology
2013-2024
Chungbuk National University
2022
Korea Electrotechnology Research Institute
2021
Cheongam College
2020
Government of the Republic of Korea
2018
International University of Korea
2017
Samsung (South Korea)
2003-2017
We developed a novel interface engineering strategy for highly stable and efficient SnO<sub>2</sub>-based planar-perovskite solar cells.
Abstract Improving the kinetics and selectivity of CO 2 /CO electroreduction to valuable multi-carbon products is a challenge for science requirement practical relevance. Here we develop thiol-modified surface ligand strategy that promotes electrochemical CO-to-acetate. We explore picture wherein nucleophilic interaction between lone pairs sulfur empty orbitals reaction intermediates contributes making acetate pathway more energetically accessible. Density functional theory calculations...
We report a molecularly controlled interfacial chemoselective methodology to immobilize ligands and cells in patterns gradients self-assembled monolayers on gold. This strategy is based reacting soluble ketone or aldehyde tethered surface-bound oxyamine alkeanethiols generate covalent oxime linkage the surface. characterize kinetic behavior of reaction surface with ferrocenecarboxaldehyde (FcCHO) as model ligand. The precise extent immobilization therefore density FcCHO SAM monitored...
AIPE active deep-red and near infrared iridium(<sc>iii</sc>) complexes were developed using electron withdrawing substituents effectively utilized them in solution processable PhOLEDs.
Two different kinds of ancillary ligands such as picolinate and thenoyltrifluoroacetylacetonate have profound effects on the excited state properties deep red emissive iridium(<sc>iii</sc>) complexes
In this paper, we propose a novel hybrid automatic repeat and request (HARQ) scheme for 5th generation (5G) enhanced mobile broadband (eMBB) systems that also support ultra-reliable low latency communications (URLLC). The proposed performs retransmission of the lost part data packet when URLLC traffic, e.g., accident alert signal on road, is transmitted immediately upon its creation by puncturing current to avoid delay. With scheme, it becomes possible whole due error small caused...
A new deep green-emitting material, a 3,5-bis(trifluoromethyl)phenylene-substituted iridium(<sc>iii</sc>) complex, <italic>fac</italic>-tris[2-(3′,5′-bis(trifluoromethyl)biphenyl-3-yl)pyridine]iridium (Ir(mtfppy)<sub>3</sub>), was synthesized.
Vehicular ad hoc networks (VANETs) rely on multi-hop communication in order to disseminate information locations beyond the transmission range. In this paper, use of handshaking mechanism is evaluated against instant for safety message routing VANETs first time. It argued that due small size VANET (mean payload 100 bytes), may not be advantageous avoid hidden node problem and incur overhead delay. The simplified broadcast without handshake recommended. Theoretical analysis propagation delay...
The electrochemical reduction of CO
Abstract Autophagy is a crucial quality control mechanism that degrades damaged cellular components through lysosomal fusion with autophagosomes. However, elevated autophagy levels can promote drug resistance in cancer cells, enhancing their survival. Downregulation of oxidative stress clinically promising strategy to counteract resistance, yet precise autophagic proteins remains challenging. Here, molecular design biocompatible neutral Ir(III) photosensitizers demonstrated, B2 and B4, for...
Two new amorphous molecular materials, 2,5-bis(2',5'-dimethyl-4-triphenylsilyl-phenyl)-[1,3,4]oxadiazole (BDTSO) and 2,5-bis(2',5'-dimethyl-4-triphenylsilyl-phenyl)-[1,3,4]thiadiazole (BDTST) were synthesized investigated as hole blocking materials (HBM) for organic light-emitting diodes. The efficiency of electroluminescent device was improved by using BDTSO instead BAlq. current power the HBM is 39.6 cd/A 13.1 lm/W at 10 mA/cm2, respectively, which higher compared to same values devices...
Recently, as underground construction becomes larger and deeper, temporary facilities must be designed, methods suitable for the environment, such shape of surrounding structures ground conditions, applied. Among them, importance self-contained earth retaining wall facility is growing. Therefore, installation method technology structure improved. In this study, to evaluate structural behavior steel pipe piles wall, a full-scale specimen was fabricated, ends were welded with round plates,...
This study presents a system dynamics methodology to evaluate quantitatively the effect of Korean government's development policy, such as tax reductions, on industrial economy. System is often perceived an optimized means identify dynamic inter-relationships among various factors policies, and in particular characteristics uncertainties coastal shipping industry. The results simulations used this shows that impact policies reductions would increase demand for about 4 years, incentives could...
This study examines how the co-location of firms within same industry enhances their information environments. We hypothesize that benefits arise from two effects: peer effect, involving intra-industry spillovers, and geographic related to shared local economic conditions with nearby non-industry peers. Our analysis evaluates these effects, both separately jointly, impact analysts’ forecast properties stock price informativeness regarding future earnings. find effect is negatively dispersion...
This letter describes the fabrication and performance of microplasma devices arrays by a replica molding process in which substrate is flexible ultraviolet (UV) transparent glass/polymer hybrid structure. In particular, ultrathin glass sheets were embedded into device so as to minimize outgassing undesirable gas species reinforce substrates from fatigue. Extended lifetime polymeric has been observed up 200 h, with full recovery after refilling gas. The major component high UV transmittance,...
본 논문은 내항상선 선원의 수급 안정화를 기하여 연안해운의 발전을 도모하기 위하여 구체적으로 수급실태의 분석을 통해 향후 수요 전망을 예측하고자 하는 것이다. 연안 해운기업의 경쟁력 강화에 있어서 선원수급과 선원인력양성의 필요성을 인지하고, 특히 인력수요예측의 정밀성을 높이고 지속적이고 피드백이 가능한 예측 프로세스를 모색하는 것은 현재 연안해운기업의 열악한 선원인력관리의 어려움을 극복하기 위한 단초로서 시의적절한 연구주제가 될 수요부문에서 선박 척수의 변화에 따른 시뮬레이션 결과, 증가율 기준을 0.1%~1% 폭의 수준을 상정할 경우 7,879~8,258명으로 예측되었다. 이는 2009년 7,831명 수준에서 매년 약 20~430명의 추가 인력이 투입되어야 함을 의미한다. 일반적으로 5년 내지 10년 단위로 단속적으로 예측치를 제시하는 방법은 예측의 사후추적이 부실한 관계로 예측정확도가 떨어지기 쉬운 점을 선행연구 검토 부분에서 확인하였으며, 연구와 같이 현황자료를 기초로...
To satisfy food demand following the increase in population, smart farms have emerged with Internet of Things (IoT), and most gather data using Low Power Wide Area Network (LPWAN) protocols such as LoRa. In this paper, a platform is designed to check real-time information based on LoRaWAN. It intended confirm efficiency by applying Kubernetes platform. Experiments are conducted compare CPU usage, Request Per Seconds (RPS), response times before after Kubernetes.
Summary from only given. We propose a new bidirectional amplification method sharing optical amplifiers and dispersion compensated fibre for the traffic in two directions. Based on our scheme, we demonstrate 640 Gb/s transmission over 160 km of single mode compare with unidirectional same node condition.