MEMS-based variable metasurfaces to control the direction and color of light빛의 방향과 색상을 제어하기 위한 MEMS 기반 가변 메타표면 연구

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dc.contributor.advisorShin, Jonghwa-
dc.contributor.advisor신종화-
dc.contributor.authorJung, Joonkyo-
dc.date.accessioned2019-09-03T02:46:08Z-
dc.date.available2019-09-03T02:46:08Z-
dc.date.issued2018-
dc.identifier.urihttp://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=867954&flag=dissertationen_US
dc.identifier.urihttp://hdl.handle.net/10203/266482-
dc.description학위논문(석사) - 한국과학기술원 : 신소재공학과, 2018.2,[iii, 48 p. :]-
dc.description.abstractActively tunable metasurface have been of interest after recognition of the importance of un-natural response of metasurfaces. Micro-electro-mechanical system(MEMS) have obtained attention as the component which gives tunability to metasurfaces because of its reliable movement and high speed. However, for visible and near-infrared regime, since the wavelength is too small, a complex structure with subwavelength dimension is difficult to be realized generally. In this study, the possibility of combination of MEMS and metasurface for visible and near-infrared regime is investigated in terms of amplitude and phase control, which is the representative characteristic of a light. As part of the amplitude control, color switches are proposed and analyzed. By controlling the mechanical displacement, this device can pass a range of wavelength(color) or block all light(dark). As part of the phase control, beam-steering metasurface is proposed. This device is designed to steer normally incident beam into the direction we want using Gires-Tournois etalons as resonators. With appropriate design of unit cells, MEMS can be used in a variety of field such as energy-efficient display, light detection and ranging(LiDAR) for autonomous car and many other devices.-
dc.languageeng-
dc.publisher한국과학기술원-
dc.subjectColor switch▼atransmission type▼aMEMS▼ametasurface▼abeam-steering-
dc.subject컬러 스위치▼a투과형▼a미세전자기계 시스템▼a메타표면▼a빔-조향-
dc.titleMEMS-based variable metasurfaces to control the direction and color of light-
dc.title.alternative빛의 방향과 색상을 제어하기 위한 MEMS 기반 가변 메타표면 연구-
dc.typeThesis(Master)-
dc.identifier.CNRN325007-
dc.description.department한국과학기술원 :신소재공학과,-
dc.contributor.alternativeauthor정준교-
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MS-Theses_Master(석사논문)
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