Fabrication of gold nanoparticles in Therminol VP-1 by laser ablation and fragmentation with fs pulses

This letter reports on a physical method to produce highly pure, size-controlled and well-dispersed spherical gold nanoparticles (NPs) in Therminol VP-1 by pulsed laser ablation in liquids (PLAL) using a 30 fs Ti:Sapphire laser at a fluence of 1 J cm−2. A second photo-fragmentation of the ablated co...

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Bibliographic Details
Published inLaser physics letters Vol. 11; no. 12; pp. 126001 - 126006
Main Authors Torres-Mendieta, R, Mondragón, R, Juliá, E, Mendoza-Yero, O, Cordoncillo, E, Lancis, J, Mínguez-Vega, G
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.12.2014
Subjects
fragmentation
gold nanoparticles
laser ablation
nanofluids
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Summary:This letter reports on a physical method to produce highly pure, size-controlled and well-dispersed spherical gold nanoparticles (NPs) in Therminol VP-1 by pulsed laser ablation in liquids (PLAL) using a 30 fs Ti:Sapphire laser at a fluence of 1 J cm−2. A second photo-fragmentation of the ablated colloid solution by subsequent treatment with the same laser light yields a mean size and size dispersion of the NPs of 58 ± 31 nm. A study of the nanofluid properties reveals a low agglomeration over time and an enhancement of thermal conductivity of the base fluid by up to 4%. These results improve the characteristics of current nanofluids in thermal oils that may have a potential impact on the improvement of the efficiency of harvesting of solar light.
ISSN:1612-2011
1612-202X
DOI:10.1088/1612-2011/11/12/126001