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Fabrication of a Au/Si nanocomposite structure by nanosecond pulsed laser irradiation

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Title: Fabrication of a Au/Si nanocomposite structure by nanosecond pulsed laser irradiation
Authors: Yoshida, Yutaka Browse this author
Watanabe, Seiichi Browse this author
Nishijima, Yoshiaki Browse this author
Ueno, Kosei Browse this author
Misawa, Hiroaki Browse this author
Kato, Takahiko Browse this author
Issue Date: 16-Sep-2011
Publisher: IOP Publishing
Journal Title: Nanotechnology
Volume: 22
Issue: 37
Start Page: 375607
Publisher DOI: 10.1088/0957-4484/22/37/375607
PMID: 21860081
Abstract: A gold/silicon nanocomposite structure (NCS) was formed on a Si(100) surface by nanosecond pulsed laser irradiation. The Au/Si NCS contained both Au nanoparticles (NPs) and Au-Si alloy layers. We report that the use of laser irradiation to form Au NPs comprises two competing processes: a top-down effect involving decomposition into smaller NPs and a bottom-up effect involving self-assembly or self-organization into larger NPs. The formation of the periodic structure involved self-organization, i.e., the bottom-up effect, and was observed in situ using a pulsed-laser-equipped high-voltage electron microscope. The NCS formed by laser irradiation can be controlled by adjusting the laser energy density and the number of laser pulses.
Rights: This is an author-created, un-copyedited version of an article accepted for publication in Nanotechnology. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The definitive publisher authenticated version is available online at 10.1088/0957-4484/22/37/375607
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 吉田 裕

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