A5002071633- Plasma and Flow Control in Aerodynamics
- Fluid Dynamics and Turbulent Flows
- Plasma Applications and Diagnostics
- Computational Fluid Dynamics and Aerodynamics
- Laser-induced spectroscopy and plasma
- Combustion and flame dynamics
- Plasma Diagnostics and Applications
- Aerodynamics and Acoustics in Jet Flows
- Advanced Combustion Engine Technologies
- Fire effects on ecosystems
- Fire dynamics and safety research
- Aerodynamics and Fluid Dynamics Research
- Catalytic Processes in Materials Science
- Gas Dynamics and Kinetic Theory
- Aerosol Filtration and Electrostatic Precipitation
- Radiative Heat Transfer Studies
- Wind and Air Flow Studies
- Analytical chemistry methods development
- Electrohydrodynamics and Fluid Dynamics
- Recycling and Waste Management Techniques
- Laser Material Processing Techniques
- Particle Dynamics in Fluid Flows
- Rocket and propulsion systems research
- Lightning and Electromagnetic Phenomena
- Catalysts for Methane Reforming
Korea University
2019-2024
University of Notre Dame
2016-2022
Institute of Forest Science
2021
Sungkyunkwan University
2017-2018
Korea Research Institute of Standards and Science
2018
Worcester Polytechnic Institute
2015-2016
Stanford University
2005-2015
Yonsei University
2002
This paper presents a comprehensive thermal scaling analysis of multilevel interconnects in deep nanometer scale CMOS technologies based on technological, structural, and material data from the International Technology Roadmap for Semiconductors. Numerical simulations have been performed using three-dimensional electrothermal finite element methods, combined with accurate calculations temperature- size-dependent Cu resistivity conductivity low-/spl kappa/ interlayer dielectrics (ILD) fully...
Energy recovery of plastic waste without carbon capture resulted in higher CO 2 emissions than from fossil fuels. Potential electricity generation 2050 waste-to-energy could be significantly increased.
The unstart phenomena in a model scramjet with free stream Mach number of 4.5 were investigated at an arc-heated hypersonic wind tunnel. High-speed schlieren imaging and high resonance frequency pressure measurements used to capture the flow features during process. Three conditions tested: (i) low-enthalpy mass loading, (ii) high-enthalpy loading (iii) heat release. It was revealed that threshold time from onset completion depended strongly on rate exchange. negative addition (cooling)...
This paper reports on the study of repetitive nanosecond-pulsed discharge splitting carbon dioxide (CO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> ) for production CO. Gas chromatography is used to analyze composition reformed gas when CO exposed high-voltage (15 kV) very short (10 ns) electrical discharges that deposit as much 0.4 mJ energy at a rate 30 kHz. Conversion and efficiency are obtained while pressure varied between 2.4...
We report on the fabrication of organic light-emitting devices (OLEDs) using a thin NaCl interlayer as an electron-injection medium. The results show that device containing layer has higher brightness and electroluminescent efficiency than without this layer. also fabricated similar-structured comparable devices, which were prepared with LiF different maximum (1 nm)/Al cathode was 2.85 cd/A, is 2.25 cd/A device. ultrathin modified carrier injection properties. In conclusion, between emitting...
We demonstrate effective manipulation of a turbulent boundary layer at Mach 4.7 conditions using surface dielectric barrier discharge (DBD) actuator. The freestream low static pressure (1 kPa) and temperature (60 K) are conducive to the visualization flow features Rayleigh scattering from condensed CO2 particles. thinning is observed when spanwise momentum induced by power (6.8 W), frequency (28 kHz) single actuator pair oriented parallel flow.
Abstract The manipulation of an unstarting supersonic flow is demonstrated using a dielectric barrier discharge (DBD). Experiments are carried out in Mach 4.7 model inlet flow. Flow features, such as boundary layers and shockwaves at low freestream static pressure (1 kPa) temperature (60 K) visualized with Rayleigh scattering from condensed CO 2 particles. unstart, initiated by mass injection, studied for three configurations, distinguished the initial conditions (untripped or tripped,...
Fast Schlieren imaging was performed to visualize the interactions between previously produced laser breakdown and a subsequent pulse. A pair of pulses used generate successive breakdowns in quiescent standard air, interval varied from 50 ns 100 μs experimentally simulate various repetition rates. The incident energies ranged 5 mJ 31 mJ, energy absorbed by second pulse quantified measuring before after breakdown. results indicate that coupled background gas only when shorter than 250 or...
A method, which can accurately measure carbon emission and gas temperature simultaneously in real-time from a laser-induced breakdown spectrum (LIBS) via machine learning, is proposed this study. In typical, peak intensity ratios had been used to map species concentrations prior plasma formation, after removing the broadband continuum of spectrum; however, dependence these on concentration changes with change density. Therefore, considering fact that strength shape function density for given...
Electrodeless microwave plasmas in carbon dioxide at atmospheric pressure have been studied for decomposition. Plasma optical emission spectroscopy has conducted to measure ro-vibrational temperatures of the plasma. It is found that temperature reaches 6200 K plasma center and there little difference between trans-rotational vibrational temperatures. Kinetic simulations considering trans-rotational, vibrational, electron separately are also investigate details decomposition dioxide. As...