logo

korean english

게시판

Home > 게시판 > 세미나

University of Massacusetts-Lowell 의 Joel Therrien 교수님을 초청하여 아래와 같이 특별 세미나를 개최합니다.

학과 구성원 여러분의 많은 참석을 부탁 드립니다. 

 

         아             래  

 

     1. 일시: 2013년 7월 25일(목) 오전 11시 

 

     2. 장소: 제1과학관 31355호실 물리학과 세미나실  

 

     3. 초청연사: Joel Therrien  교수님 (ECE Dept, University of Massacusetts-Lowell

 

     4. 제목: Beyond Graphene: Synthesis of Single Layer Graphitic Carbon Nitride — A Carbon-Nitrogen Alloy System

 

     5. 초록: Graphene attracted the world’s attention since its discovery in 2004. Dubbed “the next silicon” graphene has an impressive array of properties that made it a compelling potential competitor for silicon. However as time passed, the limitations in graphene have become more apparent and less likely to be overcome. In the meantime other 2-D materials have emerged. It is clear now that two-dimensional materials will exist as a unique class of materials. We have begun exploring a promising material: single layer graphitic carbon nitride (referred to as melon). The structure of melon resembles graphene with a hexagonal lattice of atoms, except that every other atom is either carbon or nitrogen. Due to nitrogen’s valency, the melon lattice has a lacey structure. Melon is a wide-bandgap semiconductor, with an optical bandgap of approximately 2.6eV. Ourgroup has succeeded in making melonat the wafer scale. Raman spectroscopy has been performed on single layer melon and multi layer samples.  Much like graphene, melon shows a unique raman spectrum when in single layer form. These experimental results have been compared to theoretical calculations for possible melon structures. Aside from Raman, a suite of materials characterization techniques has been applied to it to determine structural, electrical, and optical properties. Finally, results of the first melon based transistor will be discussed.

번호 제목 날짜 조회 수
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 1055767
» <7/25(목) 오전11시> 물리학과 특별세미나 개최 안내 2013.07.19 109719
161 <6/25(화)>물리학과 특별세미나 개최 안내 2013.06.24 134107
160 <4/30(화)> DC (DNA Curtains) and AC (Actin Curtains) in single-molecule biophysics 2013.04.11 110436
159 <3/27> The Born series for S-wave spin-quartet neutron-deuteron scattering at small cutoff values. 2013.03.25 77218
158 <3/12(화)>물리학과 특별초청강연 개최 안내 2013.03.04 113953
157 <2/7>Emergent p-wave Kondo Coupling in Multi-Orbital Bands with Mirror Symmetry Breaking 2013.02.06 70502
156 <2/7> Exotic phases in pyrochlore iridates 2013.02.05 65203
155 <1/16> Higgs-to-diphoton rate in type II seesaw models 2013.01.11 73374
154 <12/12> lattice structure in holographic models 2012.12.12 72877
153 <12/21(금)> Theory of topological quantum phase transitions in 3D noncentrosymmetric systems 2012.12.05 120241
152 <12/21(금)> Generic quantum spin ice 2012.12.03 66549
151 <11/28> Extremal Black Holes and Holographic C-theorem 2012.11.28 96029
150 <12/3> Magnetic couplings, optical spectra, and spin-orbit exciton in 5d Mott insulator Sr2IrO4 2012.11.26 95072
149 <11/21> Cosmological viable scalar-tensor theories of gravity 2012.11.16 177403
148 <11/5> Optical spectroscopic probe on the surface state in three dimensional topological insulators 2012.10.24 69198
147 <10/24> Dung-hai Lee 교수와의 간담회 2012.10.23 67397
146 <11/22> Spin polarization of photoelectrons from a topological insulator 2012.10.22 63164
145 <10/23> Measuring Transfer Reactions with Radioactive Beams 2012.10.15 73479
144 <10/12> Kondo Effect in a Quantum-Dot-Topological-Superconductor Junction: A Numerical Renormalization Group Analysis 2012.10.08 74656
143 <10/5> Gauge fields. Past, present, future. 2012.10.05 64537