제 목 Using classical wave systems to illustrate topological and pseudo-spin concepts
강 사 Prof. C.T. Chan (Hong Kong University)
시 간 2016년 7월 18일 (월요일) 오전 11시
장 소 제1신공학관 301동 201호
Abstract:
Man-made structures such as photonic crystals and metamaterials can have complex band dispersions in the momentum space. We will show that some geometric and topological properties in the momentum space of some carefully design periodic artificial structures can lead to interesting phenomena. In fact, many modern notions and novel phenomena that were usually considered and discussed as quantum phenomena can be realized in photonic and acoustic metamaterial systems. I will use a few examples to illustrate the ideas. We will show that geometric phases, synthetic gauge flux and topological Weyl points can be realized in electromagnetic and acoustic meta-crystals. We will also see that pseudospin physics, most commonly known in graphene, can also be manifested in classical wave systems. We can construct photonic crystals with pseudospin of 1 (instead of pseudospin of 1/2 as in graphene) which carries some rather intriguing properties. We will see that the topological characteristics and the pseudospin can each lead to unique transport properties.
Biography:
Professor Che Ting Chan received his BSc degree from the University of Hong Kong in 1980. He completed his PhD degree at the University of California at Berkeley in 1985. He joined the Physics Department of HKUST in 1995. Before coming to HKUST, Professor Chan worked at Ames Laboratory in the United States. Professor Chan was a co-winner of an Outstanding Scientific Accomplishment Award (Solid State Physics) in the U.S.A Department of Energy Materials Science Research Competition. He has been a Fellow of the American Physical Society since 1996. In 1999, he was award ed the Michael Gale Medal for Distinguished Teaching, HKUST. In 2000, he was awarded the Achievement in Asia Award by the Overseas Chinese Physics Association. Professor Chan's main research interests include application of first principles and related methods to study the electronic, structural and other physical properties of matter; surface physics; photonic band gaps; and material physics.
댓글 0
번호 | 제목 | 글쓴이 | 날짜 | 조회 수 |
---|---|---|---|---|
344 | 윤정근 연구 Nature Photonics에 소개 | 이병호 | 2017.08.10 | 296 |
343 | 소년한국일보 - 간섭계 | 이병호 | 2015.06.17 | 296 |
342 | Nano Korea 2018 | 이병호 | 2018.02.22 | 294 |
341 | 부고 - 정윤찬 선배님 부친상 | 이요한 | 2017.08.15 | 293 |
340 | 제 20차 홈커밍데이 공지입니다. | 이창건 | 2015.11.12 | 293 |
339 | 이병호 교수님 한국정보디스플레이학회 수석 부회장 당선 | 정진수 | 2019.06.29 | 292 |
338 | 제 22회 홈커밍데이 공지 | 홍종우 | 2019.05.27 | 292 |
337 | HoloKnight 웹페이지 | 이병호 | 2015.07.04 | 292 |
» | 세미나 - Prof. C. T. Chan | 이병호 | 2016.07.12 | 291 |
335 | 소년한국일보 - 인터랙티브 디스플레이 | 이병호 | 2015.07.09 | 290 |