scholarly journals Pulsed Laser-Induced Size Reduction of Aqueous Gold Nanoparticles

2012 ◽  
Vol 40 (2) ◽  
pp. 122
Author(s):  
Shuichi HASHIMOTO
Keyword(s):  
Gold Nanoparticles ◽  
Pulsed Laser ◽  
Size Reduction

Size Reduction of Gold Nanoparticles by Pulsed Laser Ablation and Re-Irradiation in Water Media

2011 ◽  
Vol 695 ◽  
pp. 174-177 ◽  
Author(s):  
Pichitchai Pimpang ◽  
Duangmanee Wongratanaphisan ◽  
Atcharawan Gardchareon ◽  
Supab Choopun
Keyword(s):  
Gold Nanoparticles ◽  
Laser Ablation ◽  
Zeta Potential ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Size Reduction ◽  
Au Nps ◽  
Vis Spectroscopy ◽  
Water Media ◽  
Cover Slide

Gold nanoparticles (Au NPs) were prepared by using pulsed laser ablation with and without cover slide. The cover slide was used to confine atoms/ions in order to reach supersaturation condition. The obtained Au NPs were investigated by UV-vis spectroscopy, transmission electron microscopy (TEM), and zeta potential measurement. The absorbance spectra exhibited its absorption peak at around 520 nm for both Au NPs ablating with and without cover slide. It was found that Au NPs ablating with cover slide exhibited smaller size and size distribution (10.6 ± 5.9 nm) than those of without cover slide (34.1 ± 21.5 nm) at laser power of 5.00 mJ/pulse. This is due to supersaturation effect and re-irradiation effect caused by cover slide that trapped atoms/ions of gold and trapped Au NPs, respectively. Also, the zeta potential of Au NPs had a negative value suggesting negative surface charge. The lowest zeta potential was observed for Au NPs ablating with cover slide at 5.00 mJ/pulse and it was in consistent with an observation of the highest pH value. In addition, the Au NPs ablating with cover slide at 5.00 mJ/pulse showed the least change with time indicating the most stable Au NPs which was in consistent with the lowest zeta potential results. Thus, pulsed laser re-irradiation could be used for size reduction of Au NPs prepared by pulsed laser ablation in water media.

Size reduction of gold particles in aqueous solution by pulsed laser irradiation

1998 ◽  
Vol 72 (7) ◽  
pp. 789-791 ◽  
Author(s):  
Hideaki Kurita ◽  
Akinori Takami ◽  
Seiichiro Koda
Keyword(s):  
Aqueous Solution ◽  
Laser Irradiation ◽  
Pulsed Laser ◽  
Size Reduction ◽  
Gold Particles ◽  
Pulsed Laser Irradiation

Shape tailoring of hexagonally ordered triangular gold nanoparticles with nanosecond-pulsed laser light

2009 ◽  
Vol 255 (24) ◽  
pp. 9822-9825 ◽  
Author(s):  
Rodica Morarescu ◽  
David Blázquez Sánchez ◽  
Nils Borg ◽  
Tigran A. Vartanyan ◽  
Frank Träger ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Laser Light ◽  
Pulsed Laser ◽  
Nanosecond Pulsed Laser ◽  
Hexagonally Ordered

Processing condition influence on the characteristics of gold nanoparticles produced by pulsed laser ablation in liquids

2013 ◽  
Vol 274 ◽  
pp. 105-109 ◽  
Author(s):  
R.G. Nikov ◽  
A.S. Nikolov ◽  
N.N. Nedyalkov ◽  
P.A. Atanasov ◽  
M.T. Alexandrov ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Laser Ablation ◽  
Processing Condition ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Laser Ablation In Liquids

Functional gold nanoparticles coupled with laser desorption ionization mass spectrometry for bioanalysis

2016 ◽  
Vol 8 (46) ◽  
pp. 8123-8133 ◽  
Author(s):  
Binesh Unnikrishnan ◽  
Chia-Yin Chang ◽  
Han-Wei Chu ◽  
Anisha Anand ◽  
Chih-Ching Huang
Keyword(s):  
Mass Spectrometry ◽  
Gold Nanoparticles ◽  
Gold Cluster ◽  
Pulsed Laser ◽  
Laser Desorption ◽  
Cluster Ions ◽  
Ionization Mass ◽  
Laser Desorption Ionization ◽  
Desorption Ionization ◽  
Surface Ligand

Monitoring of surface ligand and gold cluster ions produced by pulsed-laser-induced desorption/ionization of gold nanoparticles enables the transduction and amplification of mass signals for biosensing and bioimaging applications.

Evaluation of pulsed laser ablation in liquids generated gold nanoparticles as novel transfection tools: efficiency and cytotoxicity

2014 ◽  
Author(s):  
Saskia Willenbrock ◽  
María Carolina Durán ◽  
Annette Barchanski ◽  
Stephan Barcikowski ◽  
Karsten Feige ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Laser Ablation ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Laser Ablation In Liquids
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