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 1091448
638 <April. 6(Wed.) 4:30 PM> Quantitative Determination of High Tc Superconductivity Mechanism 2016.03.31 155226
637 <11/11>Leptogenesis in triplet seesaw models 2006.11.08 154887
636 <Oct. 20(Tue.) 2:00 PM> High-throughput Synthesis of Oxide Thin Films 2015.10.05 151121
635 <5/30> DNA 나노기술(DNA Nanotechnology) 2008.05.26 150152
634 <4/6> Knowledge is power: Maxwell's demon in the quantum wonderland 2011.03.31 149109
633 <9/26> Organic Polymers as Nuclear Radiation Sensors 2012.09.20 148721
632 <Oct.16(Wed.)> 솟구치는 초고에너지 입자의 미스테리 2019.10.10 147855
631 2021학년도 1학기 콜로퀴움 일정 2021.01.13 146910
630 <12/21(금)> Theory of topological quantum phase transitions in 3D noncentrosymmetric systems 2012.12.05 144480
629 <11/22>A Glimpse of X-ray Sky 2006.11.16 144238
628 <11/6> Scaling laws between facility and population densities 2009.11.04 143962
627 2018학년도 2학기 콜로퀴움 일정 2018.07.03 143948
» <7/25(목) 오전11시> 물리학과 특별세미나 개최 안내 2013.07.19 142875
625 2021학년도 2학기 콜로퀴움 일정 2021.07.01 141474
624 <3/26> Shedding infrared light on high-Tc superconductors 2014.03.19 141170
623 <5/16(Thu.) 14:00 ~ >The Chiral anomaly without Landau levels 2019.05.08 141024
622 <5/2>방사선을 이용한 무통/무혈 수술 2008.04.28 140101
621 <3/27>Social Experience, Brain, and Behavior 2009.03.23 139997
620 <11/5> Modified nucleic acid systems for biomedical applications 2010.11.01 136597
619 <12/30> Dirac vs. Weyl in topological insulators: Adler-Bell-Jackiw anomaly in transport phenomena 2013.12.16 136321