scholarly journals Effect of laser energy and ablation time on the formation of aluminum nanoparticles by nanosecond laser ablation of aluminum target in ethanol

2019 ◽  
Vol 12 (25) ◽  
pp. 123-126
Author(s):  
Kadhim A. Aadim
Keyword(s):  
Laser Ablation ◽  
Laser Pulse Energy ◽  
Laser Energy ◽  
Pulsed Laser ◽  
Nanosecond Laser ◽  
Aluminum Nanoparticles ◽  
Visible Absorption ◽  
Ablation Time ◽  
Nanosecond Laser Ablation ◽  
Uv Visible

In this work we study the influence of the laser pulse energy and ablation time on the aluminum nanoparticles productivity during nanosecond laser ablation of bulk aluminum immersed in liquid.Aluminum nanoparticles were synthesized by pulsed laser ablation of Al targets in ethanol for 3-8 minutes using the 1064 nm wavelength of a Nd:YAG laser with energies of 300-500 mJ per pulse.The laser energy was varied between 300 and 500 mJ/pulse, whereas the ablation time was set to 5 minutes. UV-Visible absorption spectra was used for the characterization and comparison of products.

scholarly journals Synthesis and Properties of Platinum Nanoparticles by Pulsed Laser Ablation in Liquid

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Maria Isabel Mendivil Palma ◽  
Bindu Krishnan ◽  
Guadalupe Alan Castillo Rodriguez ◽  
Tushar Kanti Das Roy ◽  
David Avellaneda Avellaneda ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Photoelectron Spectroscopy ◽  
Laser Energy ◽  
Pulsed Laser ◽  
Pt Nanoparticles ◽  
Pulsed Laser Ablation ◽  
Laser Ablation In Liquid ◽  
Visible Absorption ◽  
Energy Fluence ◽  
Ablation Time

Platinum (Pt) nanoparticles were synthesized by pulsed laser ablation in liquid (PLAL) technique in different liquids (acetone, ethanol, and methanol). Ablation was performed using a Q-switched Nd:YAG laser with output energy of 230 mJ/pulse for 532 nm wavelength. Ablation time and laser energy fluence were varied for all the liquids. Effects of laser energy fluence, ablation time, and nature of the liquid were reported. The mean size, size distributions, shape, elemental composition, and optical properties of Pt nanoparticles synthesized by PLAL were examined by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and UV-Visible absorption spectroscopy.

Formation of WS2 nanosheets and its field emission studies

2018 ◽  
Vol 32 (19) ◽  
pp. 1840078 ◽  
Author(s):  
Pankaj Koinkar ◽  
Makoto Kanazawa ◽  
Yu Ohsumi ◽  
Akihiro Furube ◽  
Mahendra A. More
Keyword(s):  
Laser Ablation ◽  
Field Emission ◽  
Emission Current Density ◽  
Nanosecond Laser ◽  
Emission Measurement ◽  
Laser Ablation In Liquid ◽  
Structural Morphology ◽  
Liquid Environment ◽  
Ablation Time ◽  
Nanosecond Laser Ablation

The present study describes the results on the formation of WS2 nanosheets using the nanosecond laser ablation in a liquid environment. The laser ablation in liquid is a well-known method and is widely used for the generation of nanostructure. The nanosecond laser ablation is used to irradiate WS2 in a isopropyl alcohol to generate WS2 nanosheets. The laser ablation time was 120 min. The field emission measurement of irradiated WS2 nanostructures was performed. The Bulk and WS2 were used to characterize the Transmission Electron Microscopy (TEM) and Raman spectroscopy to reveal their surface and structural morphology. It is found that the laser ablation time is an important parameter to transform the bulk WS2 into WS2 nanosheets. The generation of WS2 nanosheets is revealed by the Raman spectra. Moreover, the TEM images indicate that the size of WS2 microsheet has been reduced to 400 nm after the laser ablation treatment. It is also found that the field emission current density of WS2 is increased after the laser ablation. The improvement in the field emission characteristics of WS2 is due to the formation of WS2 as well as the separation of layered WS2 structure into few layers of WS2. The formation of WS2 nanosheets can be used for future optoelectronic devices.

Synthesis of Cadmium and its Oxide Nanomaterials by Pulsed Laser Ablation in Aqueous Media

2008 ◽  
Vol 1074 ◽  
Author(s):  
Subhash Chandra Singh ◽  
Rajkumar Swarnkar ◽  
Ram Gopal
Keyword(s):  
Laser Ablation ◽  
Colloidal Solution ◽  
Aqueous Media ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Distilled Water ◽  
Visible Absorption ◽  
Cadmium Metal ◽  
Uv Visible

ABSTRACTCadmium based oxide and hydroxide nanocomposites material is synthesized by pulsed laser ablation of cadmium metal in the double distilled water. A piece of cadmium metal, placed on the bottom of glass vessel containing double distilled water, was irradiated with 1064 nm of pulsed Nd:YAG laser operating at 35 mJ/pulse energy and 10 ns pulse width for 30 minutes. Colloidal solution of produced Nanoparticles is found stable for two days. Fine white colored powder is obtained after drying centrifuged solution. UV-visible absorption of colloidal solution, XRD, TGA, DTA and FTIR of the powder is used for the characterization of material. Possible mechanism of synthesis and hydroxide to oxide transition is discussed.

Preparation of Aluminum Nanoparticles and Study of the Laser Effect on them by the Laser Ablation Method

2021 ◽  
Vol 19 (7) ◽  
pp. 144-148
Author(s):  
Rasha Hamid Ahmed ◽  
Anas Abd Abdullah ◽  
Bakr Fayyadh Hassan
Keyword(s):  
Optical Properties ◽  
Laser Ablation ◽  
Laser Energy ◽  
Uv Spectroscopy ◽  
Pure Aluminum ◽  
Pulsed Laser ◽  
Energy Difference ◽  
Aluminum Nanoparticles ◽  
Laser Ablation Method ◽  
Laser Effect

In this research, aluminum nanoparticles (AL NPs) were prepared using the Nd-YAG pulsed laser ablation method with a wavelength of 1064 nm with a frequency of 6 Hz and a fixed pulse of 250 pulses. A pure aluminum metal target was immersed in ethanol and aluminum nanoparticles removed using five different laser energies ranging from (400-800) mj and the effect of the laser energy difference on the optical properties of aluminum nanoparticles was studied. The optical properties were studied using UV spectroscopy for both the absorption and transmittance spectrum and according to the change of laser power, and a change in the absorption behavior was observed. The transmittance changes with wavelength and laser energy and the best pulsed laser energy is known to ablate these particles.

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

2012 ◽  
Vol 05 ◽  
pp. 58-65 ◽  
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.

scholarly journals Imaging spectroscopy of Ag plasmas produced by infrared nanosecond laser ablation

2019 ◽  
Vol 34 (3) ◽  
pp. 489-497 ◽  
Author(s):  
J. J. Camacho ◽  
M. Oujja ◽  
M. Sanz ◽  
A. Martínez-Hernández ◽  
I. Lopez-Quintas ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Emission Spectroscopy ◽  
Optical Emission Spectroscopy ◽  
Imaging Spectroscopy ◽  
Pulsed Laser ◽  
Optical Emission ◽  
Pulsed Laser Ablation ◽  
Nanosecond Laser ◽  
Nanosecond Laser Ablation

Spatially and temporally resolved optical emission spectroscopy has been used to study plasmas formed by 1064 nm pulsed laser ablation of silver targets in a vacuum.

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