Laser-induced assembly of gold nanoparticles into colloidal crystals

Publication Type:
Journal Article
Citation:
Nanotechnology, 2007, 18 (36)
Issue Date:
2007-09-12
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Micron-sized colloidal crystals comprised of gold nanospheres have been synthesized directly from a gold nanoparticle/methyl methacrylate colloid by application of a 514 nm laser at 500 mW. An array of colloidal crystals can be created by translation of the glass substrate under the laser beam, after 2 min of irradiation at each site. We demonstrate through a series of control experiments and calculations that plasmon-induced, localized heating of the gold nanoparticles contributes to the mechanism responsible for the formation of these colloidal crystals. © IOP Publishing Ltd.
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