A5100768587- Phase-change materials and chalcogenides
- Chalcogenide Semiconductor Thin Films
- Organic Light-Emitting Diodes Research
- 2D Materials and Applications
- Conducting polymers and applications
- Fuel Cells and Related Materials
- Advanced Thermoelectric Materials and Devices
- Perovskite Materials and Applications
- Advanced Memory and Neural Computing
- Transition Metal Oxide Nanomaterials
- Electrocatalysts for Energy Conversion
- Innovative Microfluidic and Catalytic Techniques Innovation
- Solid-state spectroscopy and crystallography
- Advanced battery technologies research
- Nonlinear Optical Materials Studies
- Organic Electronics and Photovoltaics
- Advanced Chemical Physics Studies
- Microfluidic and Bio-sensing Technologies
- Supercapacitor Materials and Fabrication
- Topological Materials and Phenomena
- Plasmonic and Surface Plasmon Research
- 3D Printing in Biomedical Research
- Luminescence and Fluorescent Materials
- Optical Coatings and Gratings
- Particle Dynamics in Fluid Flows
Yonsei University
2016-2025
Chungnam National University
2023-2025
RWTH Aachen University
2022-2025
Czech Academy of Sciences, Institute of Physics
2025
Novel (United States)
2025
Soongsil University
2020-2025
Sejong University
2020-2024
Electronics and Telecommunications Research Institute
2023-2024
Hanbat National University
2023-2024
Ajou University
2023
Abstract Monocrystalline SnSe is one of the most promising thermoelectric materials with outstanding performance and a high abundance constituting elements. However, polycrystalline SnSe, which more robust for applications, only shows large figure‐of‐merit ( zT ) values in its high‐symmetry phase. Stabilizing phase at low temperatures can thus enhance average value over broad temperature range. In this work, rock‐salt successfully obtained by alloying AgVVI 2 compounds (V = Sb, Bi; VI Se,...
A home network message specification for white goods based on power line communication is proposed. It designed such as air conditioners, refrigerators, washing machines etc. The proposed composed of a virtual device service and device-specific attribute. For practical implementation, an application software two types modules are used.
This review aims to provide a technical roadmap and progress update for backplane thin film transistors (TFTs) used in organic light emitting diodes flat panel displays next-generation flexible displays. In the introduction, we general overview as well trends research on TFTs. The main section describes current level future prospects amorphous metal oxide, semiconducting carbon nanotube, 2D transition dichalcogenide, summary are provided conclusion.
Abstract Plastic/ductile inorganic van der Waals (vdW) thermoelectric semiconductors offer transformative advantages for high‐performance flexible devices, which can displace the self‐charge system of wearable electronics. However, chemical origin their plasticity remains unclear. Here, it is reported that exceptionally large plastic strain bulk SnSe 2 crystal results from its polytype conversion under an external force. The single consists a large‐period with 18R low‐symmetry structure...
Abstract Hole‐transport layers (HTL) in perovskite solar cells (PSCs) with an n‐i‐p structure are commonly doped by bis(trifluoromethane)sulfonimide (TFSI) salts to enhance hole conduction. While lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) dopant is a widely used and effective dopant, it has significant limitations, including the need for additional solvents additives, environmental sensitivity, unintended oxidation, migration, which can lead lower stability of PSCs. A novel ionic...
Abstract A family of solids including crystalline phase change materials such as GeTe and Sb 2 Te 3 , topological insulators like Bi Se 3, halide perovskites CsPbI possesses an unconventional property portfolio that seems incompatible with ionic, metallic, or covalent bonding. Instead, evidence is found for a bonding mechanism characterized by half‐filled p‐bands competition between electron localization delocalization. Different concepts have recently been suggested based on quantum...
Engineering the electronic band structures upon doping is crucial to improve thermoelectric performance of materials. Understanding how dopants influence states near Fermi level thus a prerequisite precisely tune structures. Here, we demonstrate that Sn-s in SnTe contribute density at top valence band. This consequence half-filled p-p σ-bond (metavalent bonding) and its resulting symmetry orbital phases maximum (L point Brillouin zone). insight provides recipe for identifying superior...
This study utilized cellulose-based external light extraction films to enhance the outcoupling efficiency of organic light-emitting diodes (OLEDs). These were created through a straightforward fabrication employing biopolymers hydroxyethyl cellulose (HEC) and tannic acid (TA). We observed that hydrogen bonding between HEC TA could spontaneously generate random microtextured surface on HEC: films. Furthermore, morphology HECTA film can be adjusted by varying content. When applying as an...
Although Sb2Te3, as a candidate material for next-generation memory devices, has attractive properties such higher operation speed and lower power consumption than Ge2Sb2Te5, its poor stability prevents application to commercial devices. Transition metal dopants provide enhancements in phase change characteristics, improving both thermal energy. However, the enhancement mechanism remains be sufficiently investigated, standard need achieved. Herein, of Sb2Te3 are confirmed enhanced by...
This paper describes a system to study how small physical perturbations can affect bacterial community behavior in unexpected ways through modulation of diffusion and convective transport chemical communication molecules resources. A culture environment that mimics the chemically open characteristic natural habitats but with user-defined spatiotemporal control bacteria microcolonies is realized use an aqueous two phase (ATPS). The ATPS formulated nontoxic dextran (DEX) poly(ethylene glycol)...
Disordering atomic structures offers a functionality hardly expected in ordered states, including phase-change memory and photonic computing, offering the potential to renovate von Neumann architecture for neuromorphic engineering with low latency. However, significant energy consumption during disordering compromises data reliability integration efficiency, which is traditionally regarded take place after melting. Here, we investigate time isochronal isochoric manners, challenging...
This study investigates the potential for affordable and lightweight polymer electrolyte membrane fuel cells (PEMFCs) using flow-field plates, also referred to as bipolar plates. A comparative analysis was conducted on performance of metal-coated uncoated three-dimensional (3D)-printed well that a conventional graphite plate. The fabrication these plates involved application sputtering 3D printing technologies. polarization curves corresponding electrochemical impedance spectra PEMFCs with...
Using an aqueous two-phase system comprised of dextran and polyethylene glycol, this article describes the stable spatial patterning sub-microlitre droplets bacterial suspensions. Microdroplets different types populations are positioned maintained adjacent to each other without significant dispersion even though bacteria in suspension not surface bound. Small molecules, contrast, diffuse relatively freely between two phases. The usefulness these capabilities is demonstrated by generating a...
Abstract Scaling effects in Sesqui‐chalcogenides are of major interest to understand and optimize their performance heavily scaled applications, including topological insulators phase‐change devices. A combined experimental theoretical study is presented for molecular beam epitaxy‐grown films antimony‐telluride (Sb 2 Te 3 ). Structural,vibrational, optical, bonding properties upon varying confinement studied thicknesses ranging from 1.3 56 nm. In ultrathin films, the low‐frequency coherent...
Abstract Recently, 2D nanomaterials have received considerable attention in nanomedicine due to their intrinsic optical properties, biocompatibility, and therapeutic effect. Here, germanium telluride (GeTe) nanosheets coated with polyvinylpyrrolidone (PVP) (GeTe‐PVP NSs) developed as theranostic agents are reported that can be used for multispectral optoacoustic tomography (MSOT) fluorescence imaging therapy of inflammatory bowel disease (IBD). GeTe‐PVP NSs, fabricated by simple sonication...