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seminar Date  
Date & Time Nov. 10th(Thu) 4 p.m. 
Venue E6-2. #1323(1st fl.) 
Speaker Prof. Min Seok Jang, Electrical Engineering, KAIST 

Low Dimensional Active Plasmonics and Electron Optics in Graphene

 

Nov. 10th(Thu) 4 p.m., E6-2. #1323(1st fl.)
Prof. Min Seok Jang, Electrical Engineering, KAIST

 

 

The field of plasmonics has been attracting wide interest because it has provided routes to guide and localize light at nanoscales by utilizing metals as its major building block. Meanwhile, graphene, a two-dimensional lattice of carbon atoms, has been regarded as a candidate material for future electronic applications owing to its remarkably high carrier mobility and superior thermal properties. Both research fields have been growing rapidly, but quite independently. However, a closer look reveals that there are actually numerous similarities between them, and it is possible to extract useful applications from these analogies. Even more interestingly, these research fields are recently overlapping to create a new field of research, namely graphene plasmonics, which offers a unique platform to dynamically modulate light with unprecedented spatial and temporal resolutions.

 

In this talk, I will present a few examples of these intertwined topics. First, I will introduce “rainbow trapping” structures, broadband plasmonic slow light systems composed of single or double negative materials, and clarify the mode-conversion mechanism and the light-trapping performance by analyzing the dispersion relation. I will then show that electrons in graphene exhibit photon-like dynamics and how this analogy between photonics and electronics can inspire to solve an interesting problem of electron backscattering in graphene field effect transistors. Finally, I will present how the surface plasmons in graphene can be harnessed to create infrared metasurfaces that have tunable optical properties including extreme light-matter interaction and macroscopic modulation of light absorption and thermal emission.

 

Contact: Contact: Min-kyo Seo, Physics Dept. (T.2517)

 

번호 seminar Date Venue 제목
공지     Spring 2019: Physics Seminar Serises
공지     Spring 2019: Physics Colloquium
공지   Seminar Room #1323  Fall 2017: Physics Seminar Serises
공지   Seminar Room 1501  Fall 2017: Physics Colloquium
100     Spring 2017: Physics Colloquium file
99   Seminar Room 1323  Spring 2017: Physics Seminar Serises file
98   #1323(E6-2. 1st fl.)  “Progress in the comparison of ARPES to DMFT for d and f strongly correlated electron systems”
97   #1323(E6-2. 1st fl.)  Quantum electron optics using flying electrons
96   Lecture Hall, College of Natural Sciences [#1501,E6-2]  Topological Defects and Phase Transitions
95   1:30p.m. #1323(E6-2. 1st fl.)  “Possible symmetry in the phase diagrams of electron- & hole-doped cuprate high-Tc superconductors”
94   #1323(E6-2. 1st fl.)  Entanglement area law in strongly-correlated systems
93   #1323(E6-2. 1st fl.  Shift Charge and Spin Photocurrents in Dirac Surface States of Topological Insulator
92   #1323(E6-2. 1st fl.)  Dynamical Resonance between Two Optical Cavities via Optomechanical Oscillator
91   #1323(E6-2. 1st fl.)  Symmetry Protected Kondo Metals and Their Phase Transitions
90   #1323(E6-2. 1st fl.)  Harmonic oscillator physics with single atoms in a state-selective optical potential
89   #5318(5th fl.)  Non-equilibrium many-body spin dynamics in diamond
88   #1323(E6-2. 1st fl.)  Realizing Haldane Model in Fe-based Honeycomb Ferromagnetic Insulators
»   E6-2. #1323(1st fl.)  Low Dimensional Active Plasmonics and Electron Optics in Graphene
86   #1323(E6-2. 1st fl.)  Dirac fermions in condensed matters
85   #1323(E6-2. 1st fl.)  Bandgap Engineering of Black Phosphorus
84   E6-2. #1323(1st fl.)  Quantum information experiments using few electron spins in semiconductors
83   E6-2. #1323(1st fl.)  Exotic phenomena at oxide LaAlO3/SrTiO3 hetero-interface and their applications
82   #1323(E6-2 1st fl.)  Time scale dependent dynamics in InAs/InP quantum dot gain media