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 1079251
606 2019학년도 1학기 콜로퀴움 일정 2019.01.08 128696
605 <5/16(Thu.) 14:00 ~ >The Chiral anomaly without Landau levels 2019.05.08 128544
604 <5/29> Nanomaterials Work at NASA-Johnson Space Center 2009.05.25 128284
603 <12/3> Characteristic of risk asset in financial market. 2010.11.29 127904
602 <3/12(화)>물리학과 특별초청강연 개최 안내 2013.03.04 127528
601 <4/21> Experimental and Observational Astrophysics in the Infrared Wavebands 2009.04.17 127187
600 <10/17> Graphitic Carbon Nanostructures 2008.10.27 127176
599 <11/5> Modified nucleic acid systems for biomedical applications 2010.11.01 126811
598 <April.17(Wed.)> Emerging Artificial Synapse for Learning- and Energy-Efficient Neuromorphic System 2019.04.11 126299
597 <5/1>In vivo optical imaging of hemodynamic changes 2009.05.06 126026
596 <10/28>Grazing Incidence X-ray Diffraction and Surface X-ray Scattering Study of Hematite (α-Fe2O3) Nano-cube 2011.10.26 125956
595 <3/19> Bioconjugates of nanomaterials for biochip & biosensor applications 2010.03.16 125669
594 <12/30> Dirac vs. Weyl in topological insulators: Adler-Bell-Jackiw anomaly in transport phenomena 2013.12.16 124839
593 <4/14> X-ray absorption fine structure analyses on amorphous oxide films 2009.04.06 124496
592 <4/30(화)> DC (DNA Curtains) and AC (Actin Curtains) in single-molecule biophysics 2013.04.11 123466
591 <4/30> Updates on warped brane inflation 2009.04.21 122313
590 <1/28> Steps towards a non-relativistic AdS/CFT 2010.01.25 121565
589 <3/26> Fractional Hall Physics of Epitaxial Graphene: 2010.03.19 121360
588 <12/21(금)> Theory of topological quantum phase transitions in 3D noncentrosymmetric systems 2012.12.05 121348
587 <3/31> ZnO nanorod heterostructures and nanodevices 2006.03.27 121341