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Yonsei University 나노분석기술의 현재와 미래 - 국소프로브법을 중심으로 한 실리콘표면 응용 염 한 웅 연세대학교 물리학과 / 원자선원자막연구단.

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Presentation on theme: "Yonsei University 나노분석기술의 현재와 미래 - 국소프로브법을 중심으로 한 실리콘표면 응용 염 한 웅 연세대학교 물리학과 / 원자선원자막연구단."— Presentation transcript:

1 Yonsei University 나노분석기술의 현재와 미래 - 국소프로브법을 중심으로 한 실리콘표면 응용 염 한 웅 연세대학교 물리학과 / 원자선원자막연구단

2 Yonsei University

3 Contents Part I - “Nano Probing” Part II - “Nano Probing Atomic Wires”

4 Yonsei University Part I “Nano Probing”

5 Yonsei University Contents of Part I I.What is nano-probes ? II.Nano-probes based on x-ray - frontiers and status III. Nano-probes based on scanning probes - frontiers and status

6 Yonsei University What we need

7 Yonsei University What we have

8 Yonsei University Let’s focus on nano

9 Yonsei University 나노분석기술 - Nano Probing Electron Beam Ion Beam Hard X-raySoft X-ray Probe

10 Yonsei University Photon beam ( 빛 ) probe UPS - 전자구조 XPS - 원소분석 화학결합 XRD - 결정구조 EXAFS - 국소구조

11 Yonsei University How to nano-focus x-ray SEM image ZP Fresnel zone plate (ZP)

12 Yonsei University High-brightness source: synchrotron radiation NNNSSS NNNSSS High Flux Undulator Source

13 Yonsei University 국내기반 - Pohang Light Source from 1993

14 Yonsei University STM

15 Yonsei University Our lab for STM ~ 20 K ~ 0.4 K / 7 T

16 Yonsei University STM/AFM can see and touch atoms D. Eigler, IBM (2000) S. Morita, Osaka Univ (2005)

17 Yonsei University R. Wiesendanger, Univ Hamburg (2000-2004) STM can see the spins of atoms

18 Yonsei University STM probes more on nano…

19 Yonsei University STM probes more on nano and further Electronic states Optical properties Phys. Rev. Lett. (2000-2003) Magnetic properties Science (2006)


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