A5100704973- Advanced Electron Microscopy Techniques and Applications
- Metal and Thin Film Mechanics
- Advanced ceramic materials synthesis
- Semiconductor materials and devices
- Electron and X-Ray Spectroscopy Techniques
- Plant Molecular Biology Research
- Catalytic Processes in Materials Science
- Copper-based nanomaterials and applications
- Advanced materials and composites
- nanoparticles nucleation surface interactions
- Nanofabrication and Lithography Techniques
- Electronic and Structural Properties of Oxides
- Light effects on plants
- Electrospun Nanofibers in Biomedical Applications
- Advanced Surface Polishing Techniques
- Fuel Cells and Related Materials
- Advanced Sensor and Energy Harvesting Materials
- Bone Tissue Engineering Materials
- Copper Interconnects and Reliability
- Thermal Radiation and Cooling Technologies
- Silk-based biomaterials and applications
- Sustainability and Ecological Systems Analysis
- Nanopore and Nanochannel Transport Studies
- MXene and MAX Phase Materials
- Nanomaterials and Printing Technologies
Seoul National University
2011-2025
Institute for Basic Science
2021-2025
Advanced Institute of Convergence Technology
2024
Ulsan National Institute of Science and Technology
2024
Seoul National University of Science and Technology
2020-2022
Sangmyung University
2022
Yeungnam University
2021
ORCID
2020
Gyeongsang National University
2020
Kumoh National Institute of Technology
2014-2016
The circadian clock synchronizes biological processes to daily cycles of light and temperature. Clock components, including CIRCADIAN CLOCK-ASSOCIATED1 (CCA1), are also associated with cold acclimation. However, it is unknown how CCA1 activity modulated in coordinating rhythms Here, we report that self-regulation Arabidopsis thaliana by a splice variant, CCA1β, links the CCA1β interferes formation CCA1α-CCA1α LATE ELONGATED HYPOCOTYL (LHY)-LHY homodimers, as well CCA1α-LHY heterodimers,...
Chronic wounds in diabetic patients are challenging because their prolonged inflammation makes healing difficult, thus burdening patients, society, and health care systems. Customized dressing materials needed to effectively treat such that vary shape depth. The continuous development of 3D-printing technology along with artificial intelligence has increased the precision, versatility, compatibility various materials, providing considerable potential meet abovementioned needs. Herein,...
Abstract Ice crystals at low temperatures exhibit structural polymorphs including hexagonal ice, cubic or a hetero-crystalline mixture of the two phases. Despite significant implications structure-dependent roles mechanisms behind growths each polymorph have been difficult to access quantitatively. Using in-situ cryo-electron microscopy and computational ice-dynamics simulations, we directly observe crystalline ice growth in an amorphous film nanoscale thickness, which exhibits...
Presented is a charge-optimized many-body potential (COMB) for metallic copper and oxide systems based on an extended Tersoff formalism coupled with variable charge electrostatics. To faithfully reproduce interactions between molecular oxygen the metal surface, includes atomic polarizabilities via both point dipole model dynamic partial charges, of which are equilibrated through Lagrangian scheme. The fit to training set composed experimental ab initio computational data cohesive energies,...
Using an ab initio atomistic thermodynamics framework, we identify the stable surface structures during early stages of Cu(100) oxidation at finite temperature and pressure conditions. We predict clean surface, 0.25 monolayer oxygen-covered missing-row reconstruction as thermodynamically in range 100--1000 K 10${}^{\ensuremath{-}15}$--10${}^{5}$ atm, consistent with previous experimental theoretical results. also investigate thermodynamic stabilities possible precursors to Cu${}_{2}$O...
Non-metal hexagonal boron nitride (BN) catalysts hold significant promise for the selective oxidation of light alkanes due to their distinctive anti-overoxidation properties. Although reaction-induced BOx species are typically considered active phase, formation within inert BN lattice generally requires harsh activation conditions and high reaction temperatures, which hinder production value-added liquid oxygenates. In this study, we demonstrate that can be efficiently generated on colloids...
Colloidal nanocrystals inherently undergo structural changes during chemical reactions. The robust structure-property relationships, originating from their nanoscale dimensions, underscore the significance of comprehending dynamic behavior in reactive media. Moreover, complexity and heterogeneity inherent atomic structures require tracking transitions individual at three-dimensional (3D) resolution. In this study, we introduce method time-resolved Brownian tomography to investigate temporal...
Abstract Employing thick electrodes with high active material loading is one of the most practical approaches to enhance energy density lithium‐ion batteries by fully leverage potential electrode materials. However, use typically leads a significant decline in performance, accompanied accelerated degradation. Herein, degradation mechanism elucidated high‐loading graphite electrodes, driven depth‐dependent reaction inhomogeneity along thickness. It demonstrated that primarily caused...
In this study, we present a water-in-silicone oil (W/S) Pickering emulsion system stabilized via in situ interfacial coacervation of attractive hectorite nanoplatelets (AHNPs) and bacterial cellulose nanofibrils (BCNFs). A bilayered coacervate is generated at the W/S interface by employing controlled electrostatic interaction between positively charged AHNPs negatively BCNFs. The with shows significant increase modulus 2 orders magnitude than that only. addition, observe water droplets are...
Thermal motion and interactions of sub–4-nm particles are directly observed by graphene liquid cell electron microscopy.
The energetics and kinetics of the $c$($2\ifmmode\times\else\texttimes\fi{}2$) to ($2\sqrt{2}\ifmmode\times\else\texttimes\fi{}\sqrt{2}$)$R$${45}^{\ifmmode^\circ\else\textdegree\fi{}}$ missing-row reconstruction transition on Cu(100) surface are investigated using density functional theory calculations. First, oxygen-molecule-induced restructuring unreconstructed is compared that reconstructed surface. We find surface-oxide energy decrease ($\ensuremath{-}0.149$ eV/\AA{}${}^{2}$) larger than...
Abstract A facile and scalable lithography-free fabrication technique, named solution-processable electrode-material embedding in dynamically inscribed nanopatterns (SPEEDIN), is developed to produce highly durable electronics. SPEEDIN uniquely utilizes a single continuous flow-line manufacturing process comprised of dynamic nanoinscribing metal nanoparticle solution coating with selective embedding. Nano- and/or micro-trenches are into arbitrary polymers, then an Ag dispersed, soft-baked,...