Fabrication of gold nanoparticles in intense optical field by femtosecond laser irradiation of aqueous solution

2008 ◽  
Vol 23 (4) ◽  
pp. 968-974 ◽  
Author(s):  
Takahiro Nakamura ◽  
Yuzuru Mochidzuki ◽  
Shunichi Sato
Keyword(s):  
Aqueous Solution ◽  
Gold Nanoparticles ◽  
Femtosecond Laser ◽  
Size Distribution ◽  
Laser Irradiation ◽  
Optical Field ◽  
Femtosecond Laser Irradiation ◽  
Gold Particles ◽  
Transmission Electron ◽  
The Mean

Gold particles were fabricated by the high-intensity femtosecond laser irradiation of gold (III) chloride trihydrate (HAuCl4) aqueous solution. The structure and size distribution of the prepared particles were evaluated by transmission electron microscopy. The configuration of the gold particles varied with the concentration of the HAuCl4 aqueous solution. The mean particle size and size distribution were changed by the addition of polyvinylpyrrolidone (PVP), which acted as a dispersant, and monodispersed gold nanoparticles with a diameter of about 3 nm were successfully fabricated. The formation process of the nanoparticles is discussed in terms of the optical decomposition of molecules in the highly intense optical field generated by femtosecond laser irradiation.

Bimodal size distribution of gold nanoparticles in aqueous solution during pulsed laser irradiation

2004 ◽  
Vol 850 ◽  
Author(s):  
Susumu Inasawa ◽  
Masakazu Sugiyama ◽  
Yukio Yamaguchi
Keyword(s):  
Aqueous Solution ◽  
Gold Nanoparticles ◽  
Size Distribution ◽  
Laser Irradiation ◽  
Pulsed Laser ◽  
Laser Wavelength ◽  
Bimodal Size Distribution ◽  
Transmission Electron ◽  
Two Peaks ◽  
Pulsed Laser Irradiation

ABSTRACTSize distribution of gold nanoparticles in aqueous solution during pulsed laser irradiation (Nd:YAG laser, wavelength of 355 nm, pulse width 30 ps) is observed by transmission electron microscope (TEM). Interestingly, we observed that a single peak distribution of gold nanoparticles sizes (initially centered around 25 nm) is gradually turned into a two-peaks one upon laser radiation. Initial particles reduced their sizes and smaller particles were formed, resulting in the bimodal size distribution. In these bimodal size distributions, two peaks are observed, one is at 6 nm, and another is at 24 nm.

scholarly journals The fragmentation mechanism of gold nanoparticles in water under femtosecond laser irradiation

2021 ◽  
Author(s):  
Gabriele Bongiovanni ◽  
Pavel K. Olshin ◽  
Chengcheng Yan ◽  
Jonathan M. Voss ◽  
Marcel Drabbels ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Gold Nanoparticles ◽  
Femtosecond Laser ◽  
Laser Irradiation ◽  
Laser Pulses ◽  
Ultrafast Laser ◽  
Plasmonic Nanoparticles ◽  
Femtosecond Laser Irradiation ◽  
Fragmentation Mechanism ◽  
Ultrafast Laser Pulses

Plasmonic nanoparticles in aqueous solution have long been known to fragment under irradiation with intense ultrafast laser pulses, creating progeny particles with diameters of a few nanometers. However, the mechanism...

scholarly journals Nucleation and growth of gold nanoparticles initiated by nanosecond and femtosecond laser irradiation of aqueous [AuCl4]−

2018 ◽  
Vol 20 (45) ◽  
pp. 28465-28475 ◽  
Author(s):  
Collin J. Rodrigues ◽  
Julian A. Bobb ◽  
Mallory G. John ◽  
Sergey P. Fisenko ◽  
M. Samy El-Shall ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Femtosecond Laser ◽  
Laser Irradiation ◽  
Surface Plasmon ◽  
Au Nanoparticles ◽  
Nucleation And Growth ◽  
Femtosecond Laser Irradiation ◽  
532 Nm ◽  
Polydisperse Particles ◽  
Autocatalytic Growth

Irradiation of aqueous [AuCl4]− with 532 nm, 8 ns pulses produces uniform 5 nm Au nanoparticles through surface plasmon-mediated photothermal autocatalytic growth, in contrast to the large polydisperse particles formed with 800 nm, 30 fs pulses.

scholarly journals Hollow Gold Nanoparticles Produced by Femtosecond Laser Irradiation

2020 ◽  
Vol 11 (13) ◽  
pp. 5108-5114 ◽  
Author(s):  
Juan Carlos Castro-Palacio ◽  
Konstantin Ladutenko ◽  
Alejandro Prada ◽  
Guillermo González-Rubio ◽  
Pablo Díaz-Núñez ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Femtosecond Laser ◽  
Laser Irradiation ◽  
Femtosecond Laser Irradiation ◽  
Hollow Gold Nanoparticles

scholarly journals Room temperature direct space-selective growth of gold nanoparticles inside a silica matrix based on a femtosecond laser irradiation

2010 ◽  
Vol 64 (11) ◽  
pp. 1279-1282 ◽  
Author(s):  
Hicham El Hamzaoui ◽  
Rémy Bernard ◽  
Abdallah Chahadih ◽  
Fernand Chassagneux ◽  
Laurence Bois ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Femtosecond Laser ◽  
Laser Irradiation ◽  
Room Temperature ◽  
Silica Matrix ◽  
Selective Growth ◽  
Femtosecond Laser Irradiation
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