세미나

대기환경감시를 위한 항공/우주급 초분광영상기 소개

Technology, into the Market

Engineering is not simply a study to solve our curiosity, but it is meaningful only when someone actually uses its outcome. In this presentation, we will take a look at the process that the technology developed in academia actually goes through to enter the market...

Overview of the Demonstration Project for CO2 Storage in the East Sea Gas Field

중수로 사고해석 안전연구 최근 현황

Rare-earth free/lean permanent magnets and their applications

Rare-earth free/lean permanent magnets and their applications   Jihoon Park Department of Magnetic Materials, Powder Materials Division, Korea Institute of Materials Science, Changwon, Gyeongnam, 51508, Republic of Korea   Permanent magnet materials are essential for converting mechanical and electrical energy and are required for electric vehicles, electronics, wind turbines, etc....

Accurate prediction of thermophysical properties of supercritical hydrocarbon aviation fuels and its application

ACCURATE PREDICTION OF THERMOPHYSICAL PROPERTIES OF SUPERCRITICAL HYDROCARBON AVIATION FUELS AND ITS APPLICATION Hyung Ju Lee, Ph.D. Assistant Professor, Department of Mechanical Engineering, Pukyong National University ABSTRACT Scramjet engines have been studied worldwide for decades for applications in hypersonic flight over the Mach 5 within the atmosphere, as they...

Physical mechanism of turbulence suppression by fast ions in the Fast Ion Regulated Enhancement (FIRE) plasmas

Growth and Applications of Hexagonal Boron Nitiride

Growth and Applications of Hexagonal Boron Nitride by Chemical Vapor Deposition   Hyeon Suk Shin Department of Chemistry, Ulsan National University of Science and Technology, Ulsan 44919, Republic of Korea shin@unist.ac.kr Hexagonal boron nitride (hBN) is a promising two-dimensional (2D) material owing to its unique optical properties in the deep-UV region, mechanical robustness, thermal stability, and chemical inertness. hBN thin films have gained significant attention for various applications, including nanoelectronics, photonics, single photon emission, anti-corrosion, and membranes. Thus, wafer-scale growth of hBN films is crucial to enable their industrial-scale applications. In this regard, chemical vapor deposition (CVD) is a promising method for scalable high-quality films. To date, considerable efforts have been made to develop continuous hBN thin films with high crystallinity, from those with large grains to single-crystal ones, and to realize thickness control of hBN films by CVD. However, the growth of wafer-scale high crystalline hBN films with precise thickness control has not been reported yet. The hBN growth is significantly affected by substrate, in particular the type of metals, because the intrinsic solubilities of boron and nitrogen depend on the type of metal. In this talk, state-of-the-art strategies adopted for growing wafer-scale, highly crystalline hBN are summarized, followed by the proposed mechanisms of hBN growth on catalytic substrates. Furthermore, various applications of the hBN thin films are demonstrated, including a dielectric layer, an encapsulation layer, a wrapping layer of gold nanoparticles for surface enhanced Raman scattering, a proton-exchange membrane, a template for growth of other 2D materials or nanomaterials, and a platform of fabricating in-plane heterostructures. ...

Sea ice emissivity and emitting layer temperature over the Arctic Ocean for assimilating surface-sensitive microwave channels

ALD Based Synthesis and Applications of Nanomaterials and Other Related Emerging Materials

 ALD Based Synthesis and Applications of Nanomaterials and Other Related Emerging Materials   Hyungjun Kim School of Electrical and Electronic Engineering, Yonsei University   Recently, the exclusive benefits of atomic layer deposition (ALD), including excellent conformality over nanoscale complex structures, high quality of deposited films even at low temperature down...