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장소 #1323, E6-2 
일시 May 311 (Thu.), 04:00 PM 
연사 Prof. Teun-Teun Kim 

Physics Seminar Series

 

 

Dynamic control of optical properties with gated-graphene metamaterials

 

Prof. Teun-Teun Kim

 

Center for Integrated Nanostructure Physics (CINAP)

Institute for Basic Science (IBS)

Sungkyunkwan University (SKKU)

 

May 311 (Thu.), 04:00 PM

#1323, E6-2

 

Abstract:

In this talk, I will present recent my research results with different design of artificial media, called metamaterials which consist of the arrangement of periodic subwavelength optical elements that exhibit unusual optical properties beyond what natural materials can offer. I will show the gate-induced switching and linear modulation of terahertz waves can be achieved in a hybrid material system consisting of artificially constructed meta-atoms and an atomically thin graphene layer [1]. It has been experimentally demonstrated that by integrating graphene with metamaterials, significant transmission amplitude modulation of up to 50% with high modulation speed of about 80ns was achieved with gated graphene metamaterials. Based this approach, I will introduce electrically controllable unique optical properties such as optical activity [2], anomalous refraction, and focusing [3], and analogue of electromagnetically induced transparency (EIT) [4] by integrating 2D graphene layer onto metamaterials with different functional unit cells. The switching and linear modulation of unique optical properties are realized by changing coupling among meta-atoms or electrical conductivity of metallic structures caused by increased sheet conductivity of the single layer graphene. Benefitting from the electrically controllable unique optical properties, the proposed graphene based meta-devices are expected to provide a myriad of important applications such as active polarization controllers, active slow light devices, ultrasensitive sensors and nonlinear devices. 

Reference 

[1] S. H. Lee, et al, Nature Materials 11,936-641 (2012)

[2] T. -T. Kim, et al, Science Advances 3, e1701377 (2017)

[2] T. -T. Kim, et al, Advanced Optical Materials 6(1)1700507, (2018)

[3] T. -T. Kim, et al, ACS Photonics, 5(5), 1800-1807(2018).

 

 

Department of Physics, KAIST

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공지 2019/09/18 - 12/5  Seminar Room #1323  Prof. David Schuster and etc.  Fall 2019: Physics Seminar Serises
공지 2019/09/02 - 12/09  Seminar Room 1501  이호성 박사 (한국표준과학연구원) and etc.  Fall 2019: Physics Colloquium
178 July 9 (Mon.), 14:00 PM  #1323, E6-2  Prof. Cesar A. Hidalgo, MediaLab, MIT  The principles of collective learning file
177 July 8(Mon), 14:00  E6, #1322  T. L. M. Guedes (Univ. of Konstanz)  Ultrabroadband squeezed pulses and their relation to relativity file
176 July 31(Wed.)/ 16:00  E6-2, #1323  Dr. Ivan Borzenets  Features of ballistic superconducting graphene file
175 July 30 (Tue), 4:00 PM  #1323, E6-2  Dr. Mingu Kang  Dirac fermions and flat bands in correlated kagome metals file
174 July 27, 2018 at 15:00  Room 5318, KAIST Natural Sciences Lecture Hall(E6).  Dr. Hyejung Kim(Technische University Dresden)  Muon g-2 in the 2HDM and MSSM: comprehensive numerical analysis and absolute maxima file
173 July 26, 2018 at 14:00  Room 5318, KAIST Natural Sciences Lecture Hall(E6).  Manki Kim (Department of Physics, Cornell University)  Inflation in String Theory and Backreaction file
172 July 25(Thur.),4:00PM  E6-2, #1323  Prof.Bohm-Jung Yang  Band topology of twisted bilayer graphene file
171 July 21 - August 2  E6-2,# 5318  Junmou Chen/Thomas Flacke/Kaoru Hagiwara/Junichi Kanzaki/Chris Kelso/Jeong Han Kim/Kyoungchul Kong/Gabriel Lee/Hye-Sung Lee/Ian Lewis  Challenges and Opportunities in Theoretical Particle Physics 2019 file
170 July 2. 2018 (Monday) 3:00 PM  Seminar Room (C303), Creation Hall (3F), KAIST Munji Campus  Dr. Peter Winter (Argonne National Laboratory)  High Precision Magnetic Field Measurement for the Muon g-2 Experiment file
169 July 2, 2020 (Thursday)  Zoom Video Conference Seminar  Dr. Emmanuel Flurin (CEA Saclay)  An irreversible qubit-photon coupling for the detection of itinerant microwave photons file
168 July 13, 2018 at 14:00  Room 5318, KAIST Natural Sciences Lecture Hall(E6).  Prof. Ian Lewis (The University of Kansas, Department of Physics & Astronomy)  Loop Induced Single Top Partner Production and Decay at the LHC
167 July 10 (Wed.), 04:00 PM-  Academic Cltural Complex (E9) 5층 스카이라운지  Prof. Sidney Nagel/Young-Kee Kim  Public Lectures file
166 Jul. 28 (Thu.) 4PM  #1323(E6-2. 1st fl.)  Prof. Johannes Pollanen, Jerry Cowen Chair of Experimental Physics at Michigan State University  Low Dimensional Electrons: On the Road to Hybrid Quantum Systems
165 Jul. 08 (Fri.) 2PM  #1323(E6-2. 1st fl.)  Dr. Junhyun Lee, Harvard University  Electronic quasiparticles in the quantum dimer model
164 Jul. 08 (Fri.) 11:00 AM  #1323(E6-2. 1st fl.)  Dr. Michael Lawler(Binghampton Univ. / Cornell Univ.)  Isostatic magnetism
163 Jul. 07 (Thu.) 2PM  #1323(E6-2. 1st fl.)  Dr. Eun Ah Kim, CORNELL UNIV.  Let there be topological superconductors
162 Jul 3rd, 2019 (Wed)  E6-2, 2501  Kyung Soo Choi  Many-body quantum electrodynamis (QED) with atoms and photons: A new platform for quantum optics" file
161 January 23, 2019  Rm. C303, Creation Hall (3F), Munji Campus  Mikko Mottonen  Ultrasensitive Microwave Bolometer: Opportunity for Axion Detectors file
160 January 17 (Fri), 4:00 PM  #1323, E6-2  Hiroki Ikegami  Symmetry Breaking and Topology in Superfluid 3He file
159 Jan.9 (Wed.), 04:00 PM  E6-2. 2nd fl. #2501  Dr. Heung-Sik Kim  Molecular Mott state in the deficient spinel GaV4S8 file