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1361-6463_ac6400.pdf | 1.53 MB | Adobe PDF | 見る/開く |
タイトル: | Enhancing laser-nanoparticle interactions by diffused laser beams: efficient size-reduction of nanoparticles |
著者: | Zheng, Xinyue Ando, Kota https://orcid.org/0000-0001-7051-120X (unconfirmed) Wang, Xiaolong Sakka, Tetsuo https://orcid.org/0000-0002-1892-8056 (unconfirmed) Nakajima, Takashi |
著者名の別形: | 安東, 航太 作花, 哲夫 中嶋, 隆 |
発行日: | Jul-2022 |
出版者: | IOP Publishing |
誌名: | Journal of Physics D: Applied Physics |
巻: | 55 |
号: | 27 |
論文番号: | 275106 |
抄録: | Generally speaking, a laser beam with a good spatial profile such as flat-top or Gaussian (TEM₀₀ mode) shape is considered to be a prerequisite to maximize laser-matter interactions. On the contrary, we show that if the process of interest has a threshold in terms of laser fluence or intensity, a diffused laser beam can do a good job of inducing the process. As an example, we demonstrate the efficient size-reduction of colloidal nanoparticles by a diffused laser beam and identify that the physical origin of this counterintuitive results is a redistribution of laser energy, i.e. formation of speckles through a diffuser where the local laser fluence exceeds the size-reduction threshold. We report the systematic results for silver and gold nanoparticles. |
著作権等: | This is the Accepted Manuscript version of an article accepted for publication in Journal of Physics D: Applied Physics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.1088/1361-6463/ac6400. The full-text file will be made open to the public on 20 April 2023 in accordance with publisher's 'Terms and Conditions for Self-Archiving'. This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/274812 |
DOI(出版社版): | 10.1088/1361-6463/ac6400 |
出現コレクション: | 学術雑誌掲載論文等 |
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