A5100682709- Advanced Memory and Neural Computing
- Telecommunications and Broadcasting Technologies
- Neuroscience and Neural Engineering
- Advanced Battery Materials and Technologies
- Gold and Silver Nanoparticles Synthesis and Applications
- Plasmonic and Surface Plasmon Research
- Neural Networks and Reservoir Computing
- Advancements in Battery Materials
- Multimedia Communication and Technology
- Terahertz technology and applications
- Advanced battery technologies research
- Neural dynamics and brain function
- Photoreceptor and optogenetics research
- CO2 Reduction Techniques and Catalysts
- Ferroelectric and Negative Capacitance Devices
- Quantum Dots Synthesis And Properties
- Industrial Gas Emission Control
- Machine Learning in Materials Science
- Advanced Image and Video Retrieval Techniques
- Advanced Battery Technologies Research
- Electrocatalysts for Energy Conversion
- Advanced MIMO Systems Optimization
- Aerogels and thermal insulation
- Underwater Acoustics Research
- Software-Defined Networks and 5G
Kyungpook National University
2022-2024
Pohang University of Science and Technology
2024
Daegu Gyeongbuk Institute of Science and Technology
2022
Konkuk University
2020
Electronics and Telecommunications Research Institute
2019-2020
University of Science and Technology
2020
Korea University of Science and Technology
2019
Seoul National University
2017
Terahertz (THz) nanogap structures have emerged as versatile platforms for THz science and applications by virtue of their strong in-gap field enhancements accompanying high levels sensitivity to gap environments. However, despite potential, reliable fabrication methods which create with sub-10 nm gaps remain limited. In this work, we fabricated split-ring resonator (SRR) arrays featuring a split gap. Our method, involving photolithography, argon ion milling, atomic layer deposition, is...
The 5G mobile communication system is attracting attention as one of the most suitable models for broadcasting and managing disaster situations, owing to its large capacity low latency. High-quality videos taken by a drone, which an embedded IoT device shooting in environment, play important role disaster. However, mmWave frequency band susceptible obstacles has beam misalignment problems, severing connection greatly affecting degradation TCP performance. This problem becomes even more...
It is of great importance to remove toxic gases by efficient methods for recovering the atmosphere safe levels. The adsorption gas molecules on solid adsorbents one most useful techniques because its simple operation and economic feasibility. Here, we report uniform Bead-Shaped Mesoporous Alumina (BSMA) with tunable particle size use as an adsorbent removal ammonia. BSMA particles diameters were synthesized means a sol–gel reaction Al(NO3)3∙9H2O alumina precursor in presence chitosan...
Abstract Transmission of Terahertz (THz) electromagnetic wave through a substrate is encumbered because scattering, multiple reflections, absorption, and Fabry–Perot effects when the interacts with substrate. We present experimental realization nonresonant field enhancement by factor almost 10 4 in substrate-free 5-nm gold nanoslits. Our nanoslits yielded greater than 90% normalized electric transmission low-frequency THz region; slit width was 5 nm, gap coverage ratio −4 entire membrane,...
Abstract The ethylene glycol oxidation reaction (EGOR) has attracted attention because (EG), which exhibits large‐scale production and a low market price, can be reformed into valuable glycolic acid (GCA) with the cogeneration of high‐purity hydrogen gas during reaction. In this study, noble catalyst material Pt nanoparticles supported on Se‐doped porous carbon (Pt/SePC) is prepared investigated for selective electrochemical EG to GCA. Pt/SePC achieved maximum conversion 94.6% GCA...
Linear and symmetric updates of the channel current redox transistor are involved in bulk mobile ion motion. In this study, we introduce concept a variable effective electrolyte thickness (teff) precisely tuned by gate voltage-driven ions into drain equation conventional transistor. order to understand switching characteristics nonvolatile analog that serves as an artificial synapse for neuromorphic systems, developed physics-based model MATLAB. The simulated synaptic update curves obtained...
While electro-chemical RAM (ECRAM)-based cross-point synaptic arrays are considered to be promising candidates for energy-efficient neural network computational hardware, array-level analyses achieve update operations have not yet been performed. In this work, we fabricated CuO x /HfO /WO ECRAM and demonstrated linear symmetrical weight capabilities in both fully parallel sequential operations. Based on the experimental measurements, showed that source-drain leakage current (I SD ) through...
본 연구는 로봇 시스템에서 깊이 센서를 이용한 동적 객체 위치 추정 문제를 다룬다. 객체에 대한 센서 데이터는 오차를 포함하고 있기 때문에 파티클 필터와 같은 확률적 필터를 사용해야 한다. 하지만 기존 필터는 공핍(Depletion) 문제로 인해 성능이 저하된다. 논문은 입자군집최적화 기법을 필터에 적용함으로써 재추출(Resampling) 과정 이후 수렴 성능을 높임으로써 향상시킴과 동시에, 개수를 유지하면서도 수행시간을 단축시키기 위한 GPU(Graphics Processing Unit)기반 병렬 처리 제안한다. 제안된 방법은 다양한 실험을 통해 오차의 평균 및 표준편차를 감소시킴과 동시에 전체 연산 시간은 방법과 유사하게 유지할 수 있음이 입증되었다.
The optimization of nanomaterial synthesis using numerous synthetic variables is considered to be extremely laborious task because the conventional combinatorial explorations are prohibitively expensive. In this work, we report an autonomous experimentation platform developed for bespoke design nanoparticles (NPs) with targeted optical properties. This operates in a closed-loop manner between batch module NPs and UV- Vis spectroscopy module, based on feedback AI modeling. With silver (Ag) as...
ATSC 3.0 is a next-generation terrestrial- broadcasting standard for digital television systems. As the early versions of 4K ultra high definition TVs do not use an receiver in Korea, consumers have had to separate converter device. Herein, we proposed new concept and system structure home media gateway that can transfer various services any device equipped with communication network functions. We evaluate verified its performance by building test case.
We demonstrate linear and symmetric weight update behavior in Cu-ion-driven electro-chemical RAM (ECRAM) for neuromorphic computing systems. specifically introduce CuOx gate to prevent excessive injection of Cu ions into the channel, thereby showing a highly controllable synaptic response. Our results also reveal that injected are involved analog switching.
This article proposes a dynamic linkage service which is specific model of integrated broadcast — broadband services based ATSC 3.0. The useful to the viewer who wants continue watching programs using TV or their personal devices, even after terrestrial ends due start next regular programming. In addition, we verify feasibility proposed extended through developed emulation system on consideration network capabilities environment, was tested with 4K/2K Ultra HD and receiving finished within 4...
Graphite remains an anode candidate for all-solid-state batteries (ASSBs) in order to fundamentally avoid the risks of lithium metal secondary batteries. However, due low specific capacity graphite, its thickness inevitably increases beyond that lithium-ion battery achieve a much higher areal ASSBs. The current study aimed present surface-patterned graphite electrode with solid-state hybrid electrolyte, composite poly(ethylene oxide) (PEO) and Li7La3Zr2O12 (LLZO), which is mechanically soft...