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Fabrication of a Au/Si nanocomposite structure by nanosecond pulsed laser irradiation
Open accessAbstract
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.
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“Likewise, the Au-Si composite was synthesized by the nanosecond PLI process using Si (100) surface141. The formation mechanism involves both top-down and bottom-up effects, which include the decomposition of colloidal suspension into smaller particles followed by the self-assembly of small particles into larger particles.”
From Fundamentals and comprehensive insights on pulsed laser synthesis of advanced materials for diverse photo- and electrocatalytic applications (2022) · cites this paper as [141]
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Theerthagiri, J., Karuppasamy, K., Lee, S. J., Shwetharani, R., Kim, H.-S., Pasha, S. K. K., Ashokkumar, M., & Choi, M. Y. (2022) · Light: Science & Applications · doi:10.1038/s41377-022-00904-7 · Cited by 461
Metadata
- Authors
- Yoshida, Y., Watanabe, S., Nishijima, Y., Ueno, K., Misawa, H., & Kato, T.
- Affiliations
- Hokkaido University (JP)
- Hitachi (Japan) (JP)
- Venue
- Nanotechnology
- Publisher
- IOP Publishing
- Published
- 2011-08-23
- Volume
- 22
- Issue
- 37
- Pages
- 375607
- ISSN
- 0957-4484 (ISSN-L)
- 1361-6528
- OpenAlex
- W2021780177
- Cited by
- 19
- References
- 0
- Citations by year
- 2022: 1 · 2020: 1 · 2018: 2 · 2017: 3 · 2016: 1 · 2015: 4 · 2014: 2 · 2013: 3 · 2012: 2
- FWCI
- 2.25
- Type
- journal article
- Language
- en
- Open access
- green
- hdl.handle.net
- Locations
- Nanotechnology (publishedVersion)
- PubMed (publishedVersion)
- Institutional Repositories DataBase (IRDB) (submittedVersion)
- Hokkaido University Collection of Scholarly and Academic Papers (Hokkaido University) (submittedVersion)
- Funders
- Japan Society for the Promotion of Science (23686026, 23225006)
- Topics
- Physical Sciences › Engineering › Industrial and Manufacturing Engineering › Laser Material Processing Techniques
- Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Gold and Silver Nanoparticles Synthesis and Applications
- Physical Sciences › Materials Science › Materials Chemistry › Laser-Ablation Synthesis of Nanoparticles
- Keywords
- gold nanoparticles, Au-Si alloys, nanosecond pulsed laser irradiation, self-organization, self-assembly, top-down decomposition, bottom-up growth, Si(100) surface, laser fluence, in situ high-voltage electron microscopy
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