2013 Fiscal Year Final Research Report
Studies of the production of electron vortex beams and their interaction with chiral materials
| Project/Area Number |
23241036
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Nanomaterials/Nanobioscience
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| Research Institution | Nagoya University |
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Principal Investigator |
KOH Saitoh 名古屋大学, エコトピア科学研究所, 准教授 (50292280)
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| Co-Investigator(Kenkyū-buntansha) |
TANAKA Nobuo 名古屋大学, エコトピア科学研究所, 准教授 (40126876)
YOSHIDA Kenta 名古屋大学, 高等研究院(エコ), 特任助教 (10581118)
UCHIDA Masaya 埼玉工業大学, 附置研究所, 准教授 (80462662)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Keywords | 電子顕微鏡 / らせん波 / 軌道角運動量 / 位相特異点 / ボルテックス |
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| Research Abstract |
1) Forked gratings and spiral zone plates for electron beams were nano-fabricated and introduced into electron microscopes. We confirmed that a spiral zone plate introduced into the condenser lens system of an electron microscope produced an electron vortex beam carrying an orbital angular momentum of 90h. 2) Young's double slit experiment was conducted using two electron vortex beams with different orbital angular momenta. It was confirmed that the two electron vortex beams are interfered with each other irrespective of their orbital angular momenta. 3) We confirmed that a forked grating transfers not only linear (transverse) momentum but also orbital angular momentum. 4) Electron vortex beams were illuminated to nano particles deposited on graphene and Si3N4 thin files to study the manipulation of the nano particles using the electron vortex beams.
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[Presentation] Propagation of electron vortices2012
Author(s)
M. Uchida, K. Saitoh, Y. Hasegawa, K. Hirakawa, N. Tanaka
Organizer
Tonomura FIRST International Symposium on "Electron Microscopy and Gauge Fields"
Place of Presentation
Tokyo
Year and Date
20120509-10
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