Effect of Liquid Layer Thickness on the Ablation Efficiency and the Size-Control of Silver Colloids Prepared by Pulsed Laser Ablation

The Ag nanoparticles colloid was prepared by pulsed laser ablation for different time in 10 ml distilled water without any surface active agent, and it was analysed by means of UV-visible spectrophotometer and transmission electron microscopy (TEM). The results showed that the ablation efficiency and absorbance increased fast and shift to higher energies with increasing ablation time from 5 to 10 min, then increased slowly from 10 to 20 min, and increased fast again from 20 to 25 min. The morphologies of most Ag nanoparticles were nearly spherical. The average diameter and its distribution decreased from 5 to 7.5 min, then increased from 7.5 to 15 min, and decreased from 15 to 25 min.

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Study the Effect of Liquid Layer Level on the Formation of Zinc Oxide Nanoparticles Synthesized by Liquid-Phase Pulsed Laser Ablation

Materials Science Forum ◽

10.4028/www.scientific.net/msf.880.110 ◽

2016 ◽

Vol 880 ◽

pp. 110-113 ◽

Cited By ~ 1

Author(s):

Suha I. Al-Nassar ◽

Adel K. Mahmoud ◽

Furat I. Hussein

Keyword(s):

Zinc Oxide ◽

Laser Ablation ◽

Liquid Phase ◽

Liquid Layer ◽

Zinc Oxide Nanoparticles ◽

Pulsed Laser ◽

Pulsed Laser Ablation ◽

Blue Shift ◽

Oxide Nanoparticles ◽

Uv Visible

This work is focused on studying the effect of liquid layer level (height above a target material) on zinc oxide nanoparticles (ZnO and ZnO2) production using liquid-phase pulsed laser ablation (LP-PLA) technique. A plate of Zn metal inside different heights of an aqueous environment of cetyl trimethyl ammonium bromide (CTAB) with molarity (10-3 M) was irradiated with femtosecond pulses. The effect of liquid layer height on the optical properties and structure of ZnO was studied and characterized through UV-visible absorption test at three peaks at 213 nm, 216 nm and 218 nm for three liquid heights 4, 6 and 8 mm respectively. The obtained results of UV–visible spectra test show a blue shift accompanied with decreasing the liquid level above the target due to the increase in ablation rate and particles production. This blue shift indicates getting a smaller size of nanoparticles and the quantum confinement property of nanoparticles. Also the FTIR transmittance spectra of ZnO2 nanoparticles prepared in these states show a characteristic ZnO absorption at 435 cm−1 – 445 cm−1.

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Properties of Silicon Nanoparticles Produced by Picosecond Pulsed Laser Ablation

MRS Proceedings ◽

10.1557/proc-638-f13.2.1 ◽

2000 ◽

Vol 638 ◽

Cited By ~ 1

Author(s):

M. H. Wu ◽

R. Mu ◽

A. Ueda ◽

D. O. Henderson

Keyword(s):

Laser Ablation ◽

Silicon Nanoparticles ◽

Pulsed Laser ◽

Size Variation ◽

Size Control ◽

Pulsed Laser Ablation ◽

Laser Wavelength ◽

Nanosecond Pulsed Laser ◽

Experimental Geometry ◽

Selection Of

AbstractSilicon nanocrystals have been fabricated by picosecond pulsed laser ablation. Size control over the nanocrystals can be achieved by careful selection of experimental geometry, laser fluence, laser wavelength, backing gas pressure and distance from plume center. Measurements of optical absorption and photoluminescence confirm that particle size variation does significantly affect bandgap and emission efficiency. Differences between results published previously for nanosecond pulsed laser ablation will also be discussed.

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EFFECT OF LASER WAVELENGTH AND ABLATION TIME ON PULSED LASER ABLATION SYNTHESIS OF AL NANOPARTICLES IN ETHANOL

International Journal of Modern Physics Conference Series ◽

10.1142/s2010194512001845 ◽

2012 ◽

Vol 05 ◽

pp. 58-65 ◽

Cited By ~ 2

Author(s):

A. BALADI ◽

R. SARRAF MAMOORY

Keyword(s):

Laser Ablation ◽

Pulsed Laser ◽

Pulsed Laser Ablation ◽

Ablation Rate ◽

Laser Wavelength ◽

Aluminum Nanoparticles ◽

Ablation Efficiency ◽

Ablation Time ◽

Al Nanoparticles ◽

Ablated Mass

Aluminum nanoparticles were synthesized by pulsed laser ablation of Al targets in ethanol for 5-15 minutes using the 1064 and 533 nm wavelengths of a Nd:YAG laser with energies of 280-320 mJ per pulse. It has been found that higher wavelength leads to significantly higher ablation efficiency, and finer spherical nanoparticles are also synthesized. Besides, it was obvious that higher ablation time resulted in higher ablated mass, while lower ablation rate was observed. Finer nanoparticles, moreover, are synthesized in higher ablation times.

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