logo

korean english

게시판

Home > 게시판 > 세미나

아래와 같이 콜로퀴움을 개최하오니 많이 참석해 주시기 바랍니다.

4시 20분부터 제1과학관 31214 e+강의실에서 다과를 준비하오니 많은 참석 부탁드립니다.


아 래


Title: Single-molecule chemistry and spectroscopy on ultrathin insulating films

 
Speaker: Dr. Yousoo Kim ( RIKEN, Japan )


Date & Time: Nov. 18 (Wed.) 2015, 4:30 PM


Place: Natural Science 1,  Room No. 31214


Abstract: Ultrathin insulating films grown on metal substrate has been a subject of great
interest for investigation of individual adsorbate atoms and molecules using a scanning
tunneling microscope (STM), because of electronic decoupling between the adsorbate
and supporting metal surface under an STM junction. Here, I will talk about two
representative works that we have done about energetics at the single-molecule
interfaces on the ultrathin insulating films.
The chemical reactivity of a water molecule on an
ultrathin MgO film supported by the Ag(100) substrate
depends greatly on film thickness and be enhanced
compared to that achieved with their bulk counterpart [1].
The change of chemical reactivity of ultrathin MgO film
depending on the film thickness can be explained by the
strengthening of the interaction between the oxide and
metal interface layers [2]. Our results clearly show that
such structural imperfections at the interface can improve
the chemical reactivity of the MgO film supported by an
Ag substrate [3].
Optical properties of a single metal-free phthalocyanine (H2Pc) molecule on the
2-ML thick NaCl film supported by Ag(111) have been also studied by scanning
tunneling luminescence spectroscopy. I will discuss about the single molecule reaction
of an H2Pc molecule with tunneling electrons and accompanied optical property
changes in a single-molecule luminescence spectra.
.
[1]. H.-J. Shin, J. Jung, K. Motobayashi, S. Yanagisawa, Y. Morikawa, Y. Kim, and M.
Kawai, Nat. Mater. 9, 442 (2010).
[2]. J. Jung, H.-J. Shin, Y. Kim, and M. Kawai, Phys. Rev. B 82, 085413 (2010);
[3]. J. Jung, H.-J. Shin, Y. Kim, and M. Kawai, J. Am. Chem. Soc. 133, 6142 (2011); J.
Am. Chem. Soc. 134, 10554 (2012)

번호 제목 날짜 조회 수
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 1023561
462 2008학년도 1학기 콜로퀴움 일정 안내 2008.03.04 82023
461 <3/14>Adaptive Optics for the Human Eye and Ophthalmic Applications 2008.03.12 207309
460 <3/21> Advanced Quantum Beams Based on Electron Accelerators and Lasers 2008.03.14 75253
459 2008학년도 1학기 물리세미나1 강의계획서 2008.03.18 74913
458 영어초록 예시 2008.03.18 87780
457 essay 작성요령 2008.03.18 79493
456 <3/28> Nanoscale Physics related to Resistance Switchings &Its Applications to Resistance RAM 2008.03.24 73748
455 <4/4> Novel multi-bit magnetic tagging technique for high-throughput chemical analysis 2008.03.31 110806
454 <4/11> 방사광 연 X선을 이용한 미시적 물성 연구 2008.04.07 88371
453 <5/2>방사선을 이용한 무통/무혈 수술 2008.04.28 107467
452 <5/9> Nonequilibrium Critical Phenomena: Fractals and Self-Organized Criticality 2008.05.06 94275
451 <5/16>모의실험을 이용한 물리학습 2008.05.13 75396
450 <5/23> Nanotechnology in Korea: Present Status and Perspective 2008.05.21 88983
449 <5/30> DNA 나노기술(DNA Nanotechnology) 2008.05.26 113082
448 <9/5> Dark Matter and Dark Energy in Cosmology 2008.09.01 78715
447 <9/19> Downscaling of self-aligned, all-printed polymer thin-film transistors 2008.09.16 130889
446 <9/26> High Energy Physics as e-Science 2008.09.22 76963
445 <10/10>Self-reconfigurable robots 2008.10.07 85577
444 <10/17> Graphitic Carbon Nanostructures 2008.10.27 108436
443 <10/31> 학부생을 위한 입자물리학및 끈이론 소개 2008.10.27 71677