A5100319590- Advanced Memory and Neural Computing
- Fuel Cells and Related Materials
- Ferroelectric and Negative Capacitance Devices
- Catalytic Processes in Materials Science
- Advancements in Solid Oxide Fuel Cells
- Semiconductor materials and devices
- Phase-change materials and chalcogenides
- Electrocatalysts for Energy Conversion
- Advancements in Battery Materials
- Transition Metal Oxide Nanomaterials
- Hydrogen Storage and Materials
- Advanced Battery Materials and Technologies
- Anodic Oxide Films and Nanostructures
- Surface Modification and Superhydrophobicity
- Icing and De-icing Technologies
- Semiconductor materials and interfaces
- Enzyme Structure and Function
- Advanced Battery Technologies Research
- Electronic and Structural Properties of Oxides
- Chalcogenide Semiconductor Thin Films
- Nuclear Materials and Properties
- Graphite, nuclear technology, radiation studies
- Fiber-reinforced polymer composites
- Quantum Dots Synthesis And Properties
- Radio Frequency Integrated Circuit Design
Pohang University of Science and Technology
2014-2025
Sungkyunkwan University
2011-2024
Korea Advanced Institute of Science and Technology
1998-2024
Electronics and Telecommunications Research Institute
2024
National Institute for Mathematical Sciences
2024
Chung-Ang University
2024
Korea Institute of Machinery and Materials
2011-2022
University of Notre Dame
2021
Rural Development Administration
2021
University of Michigan
2021
A two-terminal memristor memory based on a single VO2 nanowire is reported that can not only provide switchable resistances in large range of about four orders magnitude but also maintain the by low bias voltage. The phase transition was driven voltage 0.34 V without using any heat source. memristive behavior confirmed observing switching and non-volatile properties when pulses were applied, respectively. Furthermore, multiple retainable be utilized controlling number amount under This key...
Abstract Thick and dense graphite anodes used in lithium‐ion batteries (LIBs) suffer from sluggish reaction kinetics at the electrode level, causing Li metal plating on their surfaces significant capacity decay high charging currents. Thus, it is crucial to tailor electrodes based a comprehensive understanding of complex realize fast‐charging LIBs. A multi‐interface strategy proposed for tailoring using Al 2 O 3 nanoparticles enhance capability while suppressing plating. Molecular dynamics...
Superhydrophilic and superhydrophobic surfaces were studied with an eye to industrial applications use as research tools. Conventional methods involve complex time-consuming processes cannot feasibly produce large-area three-dimensional surfaces. Here, we report robust alumina nanowire structures or superhydrophilic properties, generated by inexpensive single-step anodization process that can routinely create arbitrary shapes. This is expected open up diverse applications.
In this letter, simple binary Ovonic threshold switching (OTS) material with outstanding selector device performance has been demonstrated. Even its composition and easy fabrication process, the OTS showed excellent such as high-OFF resistance (> 1 G <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\Omega $ </tex-math></inline-formula> at 0.1 V), low-ON (< k 2.0 extremely sharp slope mV/dec), fast operating...
Abstract This study demonstrates a hyper‐level control of metal‐ion migration through vacancy‐induced‐percolation (VIP) path to maximize the steep‐slope performance threshold selector with excellent selectivity and endurance. Highly efficient over VIP is achieved sophisticated stack engineering material evolution process refined electrical operation. A thorough analysis energetics metal‐ion‐ vacancy‐based hybrid filament performed using density functional theory calculations, which leads...
This study provides a first quantification of possible benefits global warming mitigation through heat stress reduction over East Asia by comparing projection results between low-emission and high-emission scenarios, as well 1.5° 2.0°C target temperature conditions. Future changes in summer were examined based on the wet-bulb globe (WBGT) using CMIP5 multimodel simulations. Changes intensity, frequency, duration analyzed terms area fraction across RCP2.6, RCP4.5, RCP8.5 scenarios also two...
ConspectusNitric oxide (NO) is an endogenous signaling molecule that participates in various physiological and biological pathways associated with vasodilation, immune response, cell apoptosis. Interestingly, NO has versatile distinct functions vivo depending on its concentration the duration of exposure; it aids cellular proliferation at nanomolar concentrations but causes death micromolar concentrations. Therefore, achieving precise on-demand modulation microenvironmental become a major...
Abstract During fast‐charging, uneven lithium plating on the surface of commercial graphite anode impedes electrochemical performance lithium‐ion batteries, causing a safety issue. The formation passivation layer, solid‐electrolyte interphase (SEI), due to side reactions with organic electrolyte, correlates long‐term cycling under fast‐charging conditions, necessitating comprehensive analysis. Herein, it is demonstrated that molybdenum disulfide (MoS 2 ) coating natural (NG) modulates...
In the development of renewable energy sources, batteries are considered best option for storage. High density and high performance key demands emerging technologies. Lithium-metal (LMBs) promising candidates storing generated energy. However, formation lithium dendrites infinite volume expansion during cycling serious limitations in current LMB applications. 3D-structured anodes have received considerable attention as an effective solution to overcome these problems. Herein, we synthesize a...
In this research, we investigate threshold voltage drift in a B-Te based OTS device under various operation conditions. To aim, of after switching process is examined. From the measurements, find that required to switch back first decreases when interval between pulsespplied for shorter than 10μs, and becomes drift-free afterward. This result implies certain amount heat generated during which results higher local temperature lowers voltage, dissipated completely 10μs. A 3D finite element...
We present resistive switching (RS) behavior of few-layer hexagonal boron nitride (h-BN) mediated by defects and interfacial charge transfer. Few-layer h-BN is grown metal–organic chemical vapor deposition used as active RS medium in Ti/h-BN/Au structure, exhibiting clear bipolar fast characteristics about ∼25 ns without an initial electroforming process. Systematic investigation on microstructural the reveals that there are structural such homoelemental B–B bonds at grain boundaries...
In this study, we comprehensively investigated the effect of Si doping on a boron-tellurium (B <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> Te xmlns:xlink="http://www.w3.org/1999/xlink">6</sub> ) based binary ovonic threshold switch (OTS). Through doping, achieved an OTS that is more suitable for mass-produced large arrays featuring low off-leakage current ( <inline-formula xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math...
Thin film solar cells with chalcopyrite <TEX>$CuInSe_2/Cu(In,Ga)Se_2$</TEX> absorber materials, commonly known as "CIS/CIGS cells" have recently attracted significant research interest a potential alternative energy-harvesting system for the next generation. Among different deposition techniques available CIGS layer, electrodeposition is an effective and low cost to vacuum based methods. This article reviews progress in area of emphasis on electrodeposited layer. Existing challenges...
In this study, we investigate the electrical characteristics of a W/Si–Te–As–Ge/W ovonic threshold switch (OTS) under various conditions to reveal origin its forming and effect on subsequent switching. Our results indicate that OTS is process generating metastable filamentary conductive path with statistical nature, which leaves behind lowest energy level activated trap, thereby significantly affecting conduction as well dynamics switching in OTS. addition, apply hot technique control...