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Issue 25, 2015

Size and polydispersity trends found in gold nanoparticles synthesized by laser ablation in liquids

J. Tomko,a  J. J. Naddeo,a  R. Jimenez,a  Y. Tan,a  M. Steiner,b  J. M. Fitz-Gerald,b  D. M. Bubba  and  S. M. O'Malley*a 
Author affiliations

* Corresponding authors

a Department of Physics, Rutgers University, 227 Penn Street, Camden, USA
E-mail: omallese@camden.rutgers.edu
Fax: +1 856-225-6624
Tel: +1 856-225-6159

b Department of Materials Science & Engineering, University of Virginia, Charlottesville, USA

Abstract

In this work, the effect of laser fluence on Au nanoparticles synthesized via laser ablation in liquids is studied for 1064 nm irradiation with 25 ps pulses. Particle size and polydispersity is found to display a negative trend with fluences up to ∼14 J cm−2. Erratic size tendencies are observed at low fluences, i.e. slightly above the ablation threshold. This overall behavior is reconciled with recent computational studies and to fluctuations in ablation due to surface morphology. The effectiveness of the commonly used surfactant sodium dodecyl sulfate (SDS) is shown to diminish at higher fluence due to pyrolysis. In addition, shadowgraph imaging of the cavitation bubble is shown as a useful technique for determining the ablation threshold. Our findings are in good agreement with threshold values determined by traditional methods and are comparable to computational values, when differences in pulse duration are taken into account.

Graphical abstract: Size and polydispersity trends found in gold nanoparticles synthesized by laser ablation in liquids

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Publication details

The article was received on 03 Apr 2015, accepted on 18 May 2015 and first published on 27 May 2015


Article type: Paper
DOI: 10.1039/C5CP01965F
Citation: Phys. Chem. Chem. Phys., 2015,17, 16327-16333
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    Size and polydispersity trends found in gold nanoparticles synthesized by laser ablation in liquids

    J. Tomko, J. J. Naddeo, R. Jimenez, Y. Tan, M. Steiner, J. M. Fitz-Gerald, D. M. Bubb and S. M. O'Malley, Phys. Chem. Chem. Phys., 2015, 17, 16327
    DOI: 10.1039/C5CP01965F

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