Impact of Laser Energy on Features of Carbon Nanostructure Materials Prepared by A One-Step Pulsed Laser Ablation in Water

2021 ◽  
Author(s):  
Khawla Khashan
Keyword(s):  
Laser Ablation ◽  
Laser Energy ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Carbon Nanostructure ◽  
Nanostructure Materials ◽  
One Step

scholarly journals Impact of Laser Energy on Features of Carbon Nanostructure Materials Prepared by A One-Step Pulsed Laser Ablation in Water

2021 ◽  
pp. 2197-2203
Author(s):  
Ali Addie ◽  
Khawla Salah Khashaan ◽  
Jehan Saimon ◽  
Azhar Hassan
Keyword(s):  
Particle Size ◽  
Laser Ablation ◽  
Laser Energy ◽  
Carbon Nanostructure ◽  
Carbon Structure ◽  
Force Microscopy ◽  
Nanostructure Materials ◽  
Longitudinal Modes ◽  
Atomic Force ◽  
One Step

     Carbon nanoparticles (CNPs) formed by one-step laser ablation in deionized water were carefully studied. Scanning electron microscopy, atomic force microscopy, Raman spectroscopy, and UV–V spectroscopy were used to obtain morphological, chemical, and optical properties of CNPs. SEM outcomes established that the synthesized nanoparticles are semi-spherical with a wide particle size distribution. Raman investigation showed two typical and expected peaks ~ (1300 - 2700) cm−1, which are confirming to transverse and longitudinal modes of the carbon structure. The absorption spectra proved that the intensity of spectra increases as particle size and concentration increase.

Synthesis of N-doped graphene quantum dots by pulsed laser ablation with diethylenetriamine (DETA) and their photoluminescence

2017 ◽  
Vol 19 (33) ◽  
pp. 22395-22400 ◽  
Author(s):  
S. R. M. Santiago ◽  
T. N. Lin ◽  
C. H. Chang ◽  
Y. A. Wong ◽  
C. A. J. Lin ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Laser Ablation ◽  
Graphene Quantum Dots ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Doped Graphene ◽  
One Step

We report a facile, fast, and one-step approach to prepare N-doped graphene quantum dots (GQDs) using pulsed laser ablation with diethylenetriamine (DETA).

scholarly journals The effect of laser energy on the preparation of iron oxide by a pulsed laser ablation in ethanol

2012 ◽  
Vol 22 (3) ◽  
pp. 134-138 ◽  
Author(s):  
P. Maneeratanasarn ◽  
T.V. Khai ◽  
B.G. Choi ◽  
K.B. Shim
Keyword(s):  
Iron Oxide ◽  
Laser Ablation ◽  
Laser Energy ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation

scholarly journals One-step synthesis of sulfur-incorporated graphene quantum dots using pulsed laser ablation for enhancing optical properties

2020 ◽  
Vol 28 (15) ◽  
pp. 21659 ◽  
Author(s):  
Sukhyun Kang ◽  
Young Kyu Jeong ◽  
Kyung Hwan Jung ◽  
Yong Son ◽  
Won Rae Kim ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Laser Ablation ◽  
Graphene Quantum Dots ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
One Step

Fabrication of Dispersed Permalloy Nanoparticles by Pulsed Laser Ablation in Aqua

2008 ◽  
Vol 1118 ◽  
Author(s):  
Ruqiang Bao ◽  
Zijie Yan ◽  
Yong Huang ◽  
Douglas B. Chrisey
Keyword(s):  
Laser Ablation ◽  
Sodium Dodecyl Sulfate ◽  
Aqueous Solutions ◽  
Laser Energy ◽  
Sodium Dodecyl ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Distilled Water ◽  
Pure Ethanol ◽  
Made In

ABSTRACTPermalloy (Ni81Fe19) nanoparticles with diameters of hundreds of nanometers have been successfully fabricated by pulsed laser ablation (PLA) in air, distilled water, pure ethanol and sodium dodecyl sulfate (SDS) aqueous solutions. The permalloy nanoparticles made in SDS solutions are typically spherical in shape. Lower laser energy with lower frequency leads to the formation of smaller permalloy nanoparticles. Higher concentration of SDS results in smaller nanoparticles. Lastly, we found some unusual permalloy nanoparticles with interesting morphologies made by PLA in air, distilled water and ethanol.

Molecular Dynamics Simulation of the Ablation Process in Ultrashort Pulsed Laser Machining of Polycrystalline Diamond

2012 ◽  
Vol 500 ◽  
pp. 351-356 ◽  
Author(s):  
Zeng Qiang Li ◽  
Jun Wang ◽  
Qi Wu
Keyword(s):  
Molecular Dynamics ◽  
Laser Ablation ◽  
Molecular Dynamics Simulation ◽  
Grain Boundaries ◽  
Laser Energy ◽  
Pulsed Laser ◽  
Polycrystalline Diamond ◽  
Pulsed Laser Ablation ◽  
Dynamics Simulation ◽  
Ultrashort Pulsed Laser

The mechanism of ultrashort pulsed laser ablation of polycrystalline diamond (PCD) is investigated using molecular dynamics simulation. The simulation model provides a detailed atomic-level description of the laser energy deposition to PCD specimens and is verified by an experiment using 300 fs laser irradiation of a PCD sample. It is found that grain boundaries play an important role in the laser ablation. Melting starts from the grain boundaries since the atoms in these regions have higher potential energy and are melted more easily than the perfect diamond. Non-homogeneous melting then takes place at these places, and the inner crystal grains melt more easily in liquid surroundings presented by the melting grain boundaries. Moreover, the interplay of the two processes, photomechanical spallation and evaporation, are found to account for material removal in ultrashort pulsed laser ablation of PCD.

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.

scholarly journals Fluorescent Nanodiamonds Synthesized in One-Step by Pulsed Laser Ablation of Graphite in Liquid-Nitrogen

2021 ◽  
Vol 7 (2) ◽  
pp. 49
Author(s):  
Massimo Cazzanelli ◽  
Luca Basso ◽  
Claudio Cestari ◽  
Nicola Bazzanella ◽  
Enrico Moser ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Liquid Nitrogen ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Optical Quality ◽  
Graphite Target ◽  
Target Movement ◽  
High Pressure High Temperature ◽  
One Step ◽  
Fluorescent Nanodiamonds

In this work, we present a relevant upgrade to the technique of pulsed laser ablation of fluorescent nanodiamonds (NDs), relying on an automatized graphite-target movement maintaining a constant level of liquid nitrogen over its surface during hours of deposition. Around 60 mg of NDs nanopowder was synthesized and optomagnetically characterized to assess its optical quality. Chemical purification of the ablated nanopowders, which removes the graphitic byproducts, permits to obtain pure fluorescent NDs with an efficiency of 7 ± 1% with respect to the total nanopowder mass. This value compares positively with the efficiency of other commercial NDs synthesis techniques such as detonation, cavitation, and high pressure–high temperature.

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