NaAlO2 and γ-Al2O3 Nanoparticles by Pulsed Laser Ablation in Aqueous Solution

2010 ◽  
Vol 115 (12) ◽  
pp. 4994-5002 ◽  
Author(s):  
I. L. Liu ◽  
B. C. Lin ◽  
S. Y. Chen ◽  
P. Shen
Keyword(s):  
Aqueous Solution ◽  
Laser Ablation ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Al2o3 Nanoparticles

Growth of self-assembled ZnO nanoleaf from aqueous solution by pulsed laser ablation

2007 ◽  
Vol 18 (21) ◽  
pp. 215602 ◽  
Author(s):  
Li Yang ◽  
Paul W May ◽  
Lei Yin ◽  
Tom B Scott
Keyword(s):  
Aqueous Solution ◽  
Laser Ablation ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Self Assembled

Synthesis, characterization, and phase stability of ultrafine TiO2 nanoparticles by pulsed laser ablation in liquid media

2004 ◽  
Vol 19 (5) ◽  
pp. 1551-1557 ◽  
Author(s):  
Changhao Liang ◽  
Yoshiki Shimizu ◽  
Takeshi Sasaki ◽  
Naoto Koshizaki
Keyword(s):  
Heat Treatment ◽  
Aqueous Solution ◽  
Laser Ablation ◽  
Sodium Dodecyl ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Particle Growth ◽  
Titania Nanoparticles ◽  
Laser Ablation In Liquid ◽  
Mean Size

We synthesized ultrafine TiO2 nanoparticles by pulsed laser ablation of a titanium target immersed in an aqueous solution of surfactant sodium dodecyl sulfate (SDS) or deionized water. The surfactant concentration dependence of TiO2 nanocrystal formation was systematically investigated by various characterization techniques. The maximum amount of ultrafine anatase nanocrystalline particles (with mean size of 3 nm in diameter) was obtained in an aqueous solution of 0.01 M SDS. A probable formation process was proposed based on the laser-induced reactive quenching and surfactant-mediated growth. The phase transformation and particle growth of as-prepared products were also investigated by heat treatment up to 500 °C. Single-phase anatase nanoparticles with a mean size of 8 nm were obtained by heat treatment of samples prepared in water or in a 0.01 M SDS solution. Particle size did not substantially increase through annealing, probably due to the relatively homogeneous size distribution and crystallinity of as-prepared titania nanoparticles.

GROWTH OF TiO2 NANOPARTICLES BY PULSED LASER ABLATION (PLA) IN LIQUID MEDIA AND STUDY OF PHOTOCATALYTIC PROPERTIES

2008 ◽  
Vol 22 (18n19) ◽  
pp. 3193-3200 ◽  
Author(s):  
S. SHADMEHR ◽  
S. M. MAHDAVI ◽  
N. TAGHAVINIA ◽  
A. AZARIAN
Keyword(s):  
Aqueous Solution ◽  
Laser Ablation ◽  
Sodium Dodecyl ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Laser Wavelength ◽  
Titanium Target ◽  
Mean Size ◽  
Uv Visible

We synthesized TiO 2 nanoparticles by pulsed laser ablation of titanium target immersed in an aqueous solution of surfactant sodium dodecyl sulfate (SDS) or deionized water. The surfactant concentration dependence on size of TiO 2 nanoparticles was investigated. The maximum amount of nanoparticles (with mean size of 40 nm in diameter) was obtained in an aqueous solution of 0.001 M SDS. We have also studied the effect of laser wavelength on growth of TiO 2 nanoparticles. UV/visible spectroscopy and Scanning Electron Microscopy observations were employed for characterization of optical properties and particle sizes respectively. As TiO 2 is a famous photocatalyst, we have also done photocatalytic test by Methyl Orange under UV irradiation for prepared samples.

Controlling the oxidation processes of Zn nanoparticles produced by pulsed laser ablation in aqueous solution

2016 ◽  
Vol 120 (12) ◽  
pp. 124312 ◽  
Author(s):  
P. Camarda ◽  
F. Messina ◽  
L. Vaccaro ◽  
G. Buscarino ◽  
S. Agnello ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Laser Ablation ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Oxidation Processes ◽  
Zn Nanoparticles

Fabrication of Permalloy Particles by Pulsed Laser Ablation in Water and Tween 80 Aqueous Solution

2009 ◽  
Vol 1230 ◽  
Author(s):  
Zijie Yan ◽  
Ruqiang Bao ◽  
Cerasela Z Dinu ◽  
Douglas B Chrisey
Keyword(s):  
Aqueous Solution ◽  
Laser Ablation ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Tween 80 ◽  
Spherical Particles ◽  
Distilled Water ◽  
Particle Interactions ◽  
Excimer Laser Ablation ◽  
The Rich

AbstractPermalloy particles were fabricated by pulsed excimer laser ablation in distilled water and Tween 80 aqueous solution with the same laser parameters. Nearly spherical particles and irregular and porous fragments were obtained in water due to rapid condensation and growth of the laser ablated clusters. The products obtained in Tween 80 aqueous solution contained well-shaped spheres but some were laser sintered together via laser-particle interactions. Holes or pits were observed on the surface of some particles, which we consider were caused by laser induced bubbles in the liquid. Our results demonstrate the rich environment ablation in liquids can be for novel particle formation.

Observations on the growth of YBa2Cu3O7-δ thin films on MgO by pulsed-laser ablation

1991 ◽  
Vol 49 ◽  
pp. 1068-1069
Author(s):  
M. Grant Norton ◽  
C. Barry Carter
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Laser Ablation ◽  
Substrate Surface ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Thin Film Deposition ◽  
Film Deposition ◽  
Laser Ablation Process ◽  
Deposition Parameters

Pulsed-laser ablation has been widely used to produce high-quality thin films of YBa2Cu3O7-δ on a range of substrate materials. The nonequilibrium nature of the process allows congruent deposition of oxides with complex stoichiometrics. In the high power density regime produced by the UV excimer lasers the ablated species includes a mixture of neutral atoms, molecules and ions. All these species play an important role in thin-film deposition. However, changes in the deposition parameters have been shown to affect the microstructure of thin YBa2Cu3O7-δ films. The formation of metastable configurations is possible because at the low substrate temperatures used, only shortrange rearrangement on the substrate surface can occur. The parameters associated directly with the laser ablation process, those determining the nature of the process, e g. thermal or nonthermal volatilization, have been classified as ‘primary parameters'. Other parameters may also affect the microstructure of the thin film. In this paper, the effects of these ‘secondary parameters' on the microstructure of YBa2Cu3O7-δ films will be discussed. Examples of 'secondary parameters' include the substrate temperature and the oxygen partial pressure during deposition.

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