Cited by 105Laser-Ablation Synthesis of NanoparticlesLaser Material Processing TechniquesLaser-induced spectroscopy and plasma

Laser ablation of a platinum target in water. III. Laser-induced reactions

Nichols, William T., Sasaki, Takeshi, Koshizaki, Naoto·2006·Journal of Applied Physics

Abstract

This is the third paper in our series studying the laser-target-liquid interactions occurring in laser ablation in liquids (LAL). Here, laser ablation of a platinum target in pure water at 355nm wavelength is studied as a function of laser energy. We describe three distinct reaction regimes between the ablated target species and water at different laser focusing conditions. At low laser fluence (<10J∕cm2), material removal is caused by laser heating of the platinum surface and the primary products are small clusters with a large percentage of platinum atoms in a nonzero oxidation state. At intermediate fluences (10–70J∕cm2), platinum nanoparticles are the primary products. Our previous studies demonstrated that in this fluence regime ablation occurs through both thermal vaporization and explosive ejection of molten droplets. In both cases reactivity is small due to the low reactivity of platinum with water. At high fluences (>70J∕cm2), we find large, faceted particles that are attributed to the drying of PtOx gels formed by reactive plasma etching of the target. Taken together these results demonstrate that significant tunability in the target-liquid interaction is possible during nanomaterial synthesis by LAL.

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Crossref · 10.1063/1.2390642

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  • Because ablation of the Pt target in these liquids was nonreactive, the nanoparticles obtained were in their elemental state.

    “Because of the nonreactive nature of ablation of Pt target in these liquids, the nanoparticles obtained were in their elemental state [7].”

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Authors
Nichols, W. T., Sasaki, T., & Koshizaki, N.
Affiliations
National Institute of Advanced Industrial Science and Technology (JP)
Venue
Journal of Applied Physics
Published
2006-12-01
Volume
100
Issue
11
ISSN
  • 0021-8979 (ISSN-L)
  • 1089-7550
OpenAlex
W1993151419
Cited by
105
References
0
Citations by year
2026: 3 · 2025: 4 · 2024: 6 · 2023: 6 · 2022: 7 · 2021: 8 · 2020: 4 · 2019: 5 · 2018: 3 · 2017: 11 · 2016: 5 · 2015: 7 · 2014: 3 · 2013: 4 · 2012: 8
FWCI
1.53
Type
journal article
Language
en
Open access
closed
Locations
Journal of Applied Physics (publishedVersion)
Funders
Japan Society for the Promotion of Science
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Laser-Ablation Synthesis of Nanoparticles
  • Physical Sciences › Engineering › Computational Mechanics › Laser Material Processing Techniques
  • Physical Sciences › Engineering › Mechanics of Materials › Laser-induced spectroscopy and plasma
Keywords
laser ablation in liquid, platinum, water, laser-induced reactions, laser fluence, platinum nanoparticles, platinum clusters, oxidation state, thermal vaporization, molten droplets, plasma etching, nanomaterial synthesis

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