A5100733406- Dynamics and Control of Mechanical Systems
- Mechanical Engineering and Vibrations Research
- Bone Tissue Engineering Materials
- Advancements in Battery Materials
- Additive Manufacturing and 3D Printing Technologies
- Conducting polymers and applications
- Risk and Safety Analysis
- Organic Electronics and Photovoltaics
- Advanced Battery Technologies Research
- Phase Equilibria and Thermodynamics
- 3D IC and TSV technologies
- Engineering Applied Research
- Semiconductor Lasers and Optical Devices
- Thermal Radiation and Cooling Technologies
- Marine and Coastal Research
- Advanced Glycation End Products research
- solar cell performance optimization
- Gear and Bearing Dynamics Analysis
- Vehicle Dynamics and Control Systems
- Analytical Chemistry and Chromatography
- Composite Structure Analysis and Optimization
- Photonic and Optical Devices
- Diverse Topics in Contemporary Research
- Robotic Mechanisms and Dynamics
- Innovations in Concrete and Construction Materials
Pusan National University
2005-2024
Electronics and Telecommunications Research Institute
2023-2024
Kyung Hee University
2013-2024
Seoul National University
2000-2024
Korea Institute of Materials Science
2013-2023
Samsung (South Korea)
2012-2020
Incheon National University
2016
Hanwha Techwin (South Korea)
2015
Andong National University
2014
Pusan National University Hospital
2014
Abstract Highly efficient and bendable organic solar cells (OSCs) are fabricated using solution‐processed silver nanowire (Ag NW) electrodes. The Ag NW films were highly transparent (diffusive transmittance ≈ 95% at a wavelength of 550 nm), conductive (sheet resistance 10 Ω sq −1 ), flexible (change in 1.1 ± 1% bending radius ≈200 μm). Power conversion efficiencies ≈5.80 5.02% obtained for devices on NWs/glass NWs/poly(ethylene terephthalate) (PET), respectively. Moreover, the NWs/PET...
Bacterial cellulose nanofiber (BCNF) with high thermal stability produced by an ecofriendly process has emerged as a promising solution to realize safe and sustainable materials in the large-scale battery. However, understanding of actual behavior BCNF full-cell battery been lacking, yield is still limited for commercialization. Here, we report entire production manufacture. We systematically constructed strain highest (31.5%) increasing metabolic flux improved safety introducing Lewis base...
Abstract Thin-film optical diodes are important elements for miniaturizing photonic systems. However, the design of relies on empirical and heuristic approaches. This poses a significant challenge identifying optimal structural models at given wavelengths. Here, we leverage quantum annealing-enhanced active learning scheme to automatically identify designs 130 nm-thick diodes. An diode is stratified volume diffractive film discretized into rectangular pixels, where each pixel assigned either...
To obtain highly efficient, stable, and environmentally friendly blue-light-emitting materials for display applications, we prepared a specially tailored Cd-free, colloidal quantum-well (CQW) structure of ZnS/ZnTeSe/ZnS. We optimized the synthetic methods to construct very uniform ZnS core having diameter ∼2.9 nm within 10% size distribution. In addition, it was found that QD structures were either cube with (100) surface facets or tetrahedron (111) facets. As ZnTeSe mid-shell grew on...
Critical properties for carbon dioxide + methanol, ethanol, 1-propanol, and 1-butanol were measured using a variable-volume view cell apparatus. Binary mixtures with mole fractions of 0.976 to 0.637 have been investigated up 430 K 175 bar. The dew point bubble the measured, particularly in vicinity critical point, narrow increments P−T projection, was estimated two adjacent points. experimental results compared literature values.
Radiative coolers spectrally tailored at mid-infrared wavelengths (5–30 μm) achieve passive and efficient heat dissipation, thereby working together with existing conduction convection channels. However, radiative developed to date are structurally too complex be scalable, thick for monolithic integration, visibly opaque or reflective, thermally unstable, particularly when integrated into optoelectronic devices. Here, we report wafer-scale, submicron-thick, on-chip designed high-temperature...
Ceramic suspension is a basic ingredient for various ceramic processing, and designing system important to secure material processability in applications. Especially when engineering ceramics, highly loaded essential fabricate dense bodies proper mechanical properties. However, as solid loading increases, the viscosity of keeps increasing shows shear‐thickening behavior under shear condition, which makes formulation challenging issue interest. Herein, strategy design with optimal organic...
We report highly emissive and radiatively cooled metallic surfaces that sustain multiple high-amplitude gap plasmon cavity modes within the principal thermal radiation spectrum at room temperature (i.e., 8–13 μm). A square-lattice array of Cu/ZnS/Cu cavities with five different widths was designed to avoid near-field coupling between adjacent anticrossing a mode first diffraction mode. The fabricated on Si substrate exhibited an effective emissivity >0.62, up incidence 60°. Outdoor solar...
Solar reflectance and thermal emissivity are critical benchmarks for evaluating the effectiveness of passive cooling strategies. The integration three-dimensional (3D) printing techniques with materials enables local management multifaceted objects, offering opportunities unexplored energy-saving applications. For example, conformal can mitigate solar absorption caused by top metal electrodes in cells, thereby improving their efficiency lifetime. In this study, we report synthesis 3D...
Reactive oxygen species (ROS) cause oxidative stress and aging. The catalase gene is a key component of the cellular antioxidant defense network. However, molecular mechanisms that regulate expression are poorly understood. In this study, we have identified DNA replication‐related element (DRE; 5′‐TATCGATA) in 5′‐flanking region Drosophilacatalase gene. Gel mobility shift assays revealed previously factor called DREF (DRE‐ binding factor) binds to DRE sequence Drosophila We used...
Sulfabenzamide was recrystallized from its solutions by using liquid and supercritical fluid as antisolvents. The drug compound dissolved in various organic solvents, such acetone, methanol, ethanol, ethyl acetate, the came into contact with two antisolvents, water (liquid) carbon dioxide (supercritical fluid). Variations of habit, particle size, thermal behavior crystals were examined to investigate effect operating temperature, type solvent antisolvent, mixing method, presence ultrasound....
Abstract A new finite element of a thin spatial beam is proposed using the absolute nodal coordinate formulation (ANCF). In contrast to other large deformation formulations, equations motion contain constant mass matrices and generalized gravity forces as well zero centrifugal Coriolis inertia forces. The only nonlinear term vector elastic elements equation are developed in details including air resistance constraint satisfy boundary conditions. An application dynamics rotating light strip...