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 1060004
682 2022학년도 2학기 콜로퀴움 일정 2022.06.22 814
681 <July 8(Fri.)>Intertwined magnetism and charge density wave in a kagome metal 2022.06.03 935
680 <May 18(Wed.)>Magnetoresistance and Hall effects of Fe5Sn3 single crystals 2022.05.12 1171
679 <Apr. 27(Wed.)> I) A few first questions by me. II) ‘Topotactic resistance switching RAM’의 최초 발견 2022.04.20 1175
678 <May 11(Wed.)>Key Nuclear Experimental Studies to Find the Origin of Elements 2022.05.04 1239
677 <May 4(Wed.)>Recent progress in the study of topological phases of matter 2022.04.27 1248
676 <Apr. 20(Wed.)> 반도체 공정용 플라즈마 물리 2022.04.14 1280
675 <May. 10(Tue.)>Longitudinal magnon decay in the quasi-two-dimensional antiferromagnet in Ba2FeSi2O7 2022.05.09 1329
674 <May. 3(Tue.)>Anomalous Hall signatures of nonsymmorphic nodal lines in the doped chromium chalcospinel CuCr2Se4 2022.04.19 1430
673 <Mar. 30(Wed.)> Two-dimensional Semiconductors and their applications 2022.03.23 1637
672 <Mar. 16(Wed.)> 현세대/차세대 이차전지 기술 동향 및 전망 2022.03.02 1685
671 <Apr. 6(Wed.)> Holographic Flat Panel Displays 2022.03.30 1810
670 <Mar. 2(Wed.)>Introduction to high-energy nuclear physics 2022.02.24 2144
669 <Jan. 27(Thu.)>Emulating twisted double bilayer graphene with a multiorbital optical lattice 2022.01.18 2338
668 <Mar. 23(Wed.)> Next-generation artificial intelligence devices and physics 2022.03.16 2821
667 <Nov. 17(Wed.)>펜로즈의 삼각형과 블랙홀 - 부분과 전체 2021.11.11 4078
666 <Sep. 15(Wed.)> 강화학습 - 시행착오를 통해 배워나가는 인공지능 2021.09.08 5052
665 <Oct. 6(Wed.)> 블랙홀에서 쌍꺼풀수술까지 2021.09.29 5801
664 <Nov. 29(Mon.)>Exploring light-matter interactions at atomic scale using electron microscopy 2021.11.22 6694
663 <Nov. 10(Wed.)>Optical Spectroscopy of 2-Dimensional Materials 2021.11.03 7417