Forming spherical gold nanoparticles from polymorphic nanoparticles using a single laser pulse

A method is presented for using a single laser pulse to transform polymorphic polycrystalline gold nanoparticles (Au NPs) into crystalline nanospheres. Transmission electron microscope analysis of the nominally 60-nm-diameter Au NP starting material and the product suspension confirms the production...

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Bibliographic Details
Published in:Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology 2014-07, Vol.16 (7), p.1-7, Article 2460
Main Authors: Meier, Douglas C., Cavicchi, Richard E.
Format: Article
Language:English
Subjects:
Ablation
Anisotropy
Centrifugation
Characterization and Evaluation of Materials
Chemistry and Materials Science
Citrates
Cross-disciplinary physics: materials science
rheology
Crystal structure
Crystallinity
Exact sciences and technology
Gold
Inorganic Chemistry
Laser deposition
Lasers
Materials Science
Methods of deposition of films and coatings
film growth and epitaxy
Nanocrystalline materials
Nanoparticles
Nanoscale materials and structures: fabrication and characterization
Nanospheres
Nanotechnology
Optical Devices
Optics
Photonics
Physical Chemistry
Physics
Research Paper
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Summary:A method is presented for using a single laser pulse to transform polymorphic polycrystalline gold nanoparticles (Au NPs) into crystalline nanospheres. Transmission electron microscope analysis of the nominally 60-nm-diameter Au NP starting material and the product suspension confirms the production of slightly smaller particles that exhibit greater crystallinity and feature reduced caliper diameter aspect ratios and anisotropy. Centrifugation followed by ultrasonic resuspension into citrate solution separates the nanospheres from the
ISSN:1388-0764
1572-896X
DOI:10.1007/s11051-014-2460-9