Manipulation of CdSe/ZnS quantum dots in room-temperature fluid with an inhomogeneous electric field and optical excitation

Material type: 文書・図像類

Author: Kumakura, Mitsutakaほか

Publisher: SPIE

Publication date: 2020-06-15

Material Format: Digital

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Note (General)：: We successfully demonstrated the manipulation of CdSe/ZnS quantum dots with a diameter of nearly 6 nm in organic solvent at room temperature by applyi...

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Material Type: 文書・図像類
Title: Manipulation of CdSe/ZnS quantum dots in room-temperature fluid with an inhomogeneous electric field and optical excitation
Author/Editor: Kumakura, Mitsutaka
Shimomura, Takayuki
Asano, Riki
Nozue, Goro
Yamamoto, Kiroku
Moriyasu, Takeshi
Author Heading: Kumakura, Mitsutaka
Shimomura, Takayuki
Asano, Riki
Nozue, Goro
Yamamoto, Kiroku
Moriyasu, Takeshi
Publication, Distribution, etc.: SPIE
Publication Date: 2020-06-15
Publication Date (W3CDTF): 2020-06-15
Periodical title: Proceedings of SPIE
No. or year of volume/issue: 11522
Volume: 11522
Pages: 115220V-1-115220V-3
ISSN (Periodical Title): ISSN : 0277-786X
Text Language Code: eng
Subject Heading: quantum dot
dielectrophoresis
exciton
Stark effect
manipulation
Target Audience: 一般
Note (General): We successfully demonstrated the manipulation of CdSe/ZnS quantum dots with a diameter of nearly 6 nm in organic solvent at room temperature by applying an intense electric field (1.7 MV/m) under resonant optical excitation (the wavelength 532nm). From the time-variation of the quantum dot distribution monitored by fluorescence imaging, it was experimentally found that the quantum dots gather around the local maximum of the electric field intensity and the potential energy applied on the quantum dot under the optical excitation is estimated to be nearly 400 K, which is approximately 20 times larger than that expected with conventional dielectrophoresis. Such a large potential energy is considered to be due to the Stark effect of the exciton created in the optically excited quantum dot.
Source: https://u-fukui.repo.nii.ac.jp/?action=repository_action_common_download&item_id=24882&item_no=1&attribute_id=22&file_no=1
https://u-fukui.repo.nii.ac.jp/?action=repository_action_common_download&item_id=24882&item_no=1&attribute_id=22&file_no=1
Access Restrictions: 限定公開
Rights (production): The Authors and published under a Creative Commons Attribution 4.0 Unported License (CC BY)
Related Material (DOI): 10.1117/12.2573798
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 福井大学 : 福井大学学術機関リポジトリ