logo

korean english

게시판

Home > 게시판 > 세미나

아래와 같이 콜로퀴움을 개최하오니 많이 참석해 주시기 바랍니다.

4시 20분부터 제1과학관 31214 e+강의실에서 다과를 준비하오니 많은 참석 부탁드립니다

 

아 래

 

제목: 나노구조 산화물 재료의 기능성-용매화전자에서 전자화합물까지...

 

연사: 김   성   웅  교수님 (성균관대학교 에너지과학과)

 

일시: 2012년 5월 23(수) 오후4:30

 

장소: 제1과학관 31214  e+첨단강의실

 

초록: 

  This talk will cover the functionalities of nanostructured oxide materials composed of ubiquitous elements, specially the electro-active functionalities of both natural and artificial nanostructured oxide. It is well-known in the college textbook that the abundant light-metal oxides such as SiO2, Al2O3 and CaO are typical insulators exhibiting no electro-active functionalities. However, this common sense should be revised to that “Nanostructured light-metal oxides show the electrical conduction from semiconducting to metallic and finally to superconductivity.” This phenomenon is based on the interstitial electrons in a structural space with the size of nanoscale, which have a long history over 2 century, from the birth of solvated electrons discovered in 1806 to the recent discovery of electride materials.

Electrides, ionic compounds with electrons working as anions, are regarded as new elecro-active materials in condensed matter physics and material science. Electrides have been studied extensively owing to exotic electronic structures, relevant unique chemical and physical properties based on interstitial electrons. A discovery of new electride in light-metal oxide, 12CaO×7Al2O3 (C12A7) with a high stability under ambient condition, facilitates and widens the electride researches for scientific and practical applications, and changes the above-mentioned common sense in science. In this talk, a history from the birth solvated electrons discovered in 1806 to a recent achievement of our C12A7 will be introduced. Further, as a promising candidate of energy-related materials, the physical and chemical properties of electrides, being utilized as a new electron source material, will be discussed. Additionally, the artificial nanostructure between insulating oxides having a high potential as a new electronics and an energy material will be introduced.

 

번호 제목 날짜 조회 수
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 1091512
658 <5/18> Baryons in AdS/QCD 2007.05.15 109159
657 <9/13> Multiferroic properties of BiFeO3 single crystal and 1D-Chain system 2007.09.04 83335
656 <9/10> Nanomaterials for Biotech Applicastions 2007.09.05 88553
655 <1/17>Quantum criticality and superconductivity 2008.01.16 90577
654 <2/11>Marginal Deformations For Lower Dimensional D-bran... 2008.02.05 94429
653 <5/1> Schwinger Pair Production in dS_2 and AdS_2 2008.04.29 84998
652 <5/15>Black Hole Entropy Function in (Anti-)de Sitter Space-Time 2008.05.09 126052
651 <5/19> High Energy Physics and The Gas Electron Multiplier Detector Technology 2008.05.15 87144
650 <6/10> Traffic Problem in Physics and Its Application 2008.06.10 92013
649 <6/26> Hawking radiation and divergence anomalies 2008.06.26 114605
648 <7/3> Complex networks and the graph structure of metabolism 2008.06.26 107340
647 <7/2> Dyonic Instanton and Its Higgs Structures 2008.07.01 73619
646 <10/14> Applications of holographic QCD 2008.10.13 84765
645 <11/14> Resonance collective mode in novel superconductors 2008.11.11 101849
644 <11/27> N=4,5,6,8 superconformal Chern-Simons theory 2008.11.25 80653
643 <1/8>Supersymmetric states in AdS/CFT 2009.01.05 110168
642 <1/14>Dark Matter signals from PAMELA and ATIC 2009.01.12 91116
641 <1/22>Vortices, Q-balls, domain walls on dielectric M2 brane 2009.01.19 83282
640 <4/3> Spin-orbit coupling induced Mott insulating state 2009.03.13 96458
639 <3/26>A perturbative & non-perturbative test of ABJM model 2009.03.19 92591