Production of Nanometer-Size GaAs Nanocristals by Nanosecond Laser Ablation in Liquid

2012 ◽  
Vol 12 (8) ◽  
pp. 6774-6778 ◽  
Author(s):  
Kamal Abderrafi ◽  
Ernesto Jiménez ◽  
Teresa Ben ◽  
Sergio I. Molina ◽  
Rafael Ibáñez ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Nanosecond Laser ◽  
Laser Ablation In Liquid ◽  
Nanometer Size ◽  
Nanosecond Laser Ablation

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.

scholarly journals Luminescent Carbon Dots Synthesized by the Laser Ablation of Graphite in Polyethylenimine and Ethylenediamine

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 729
Author(s):  
Agata Kaczmarek ◽  
Jacek Hoffman ◽  
Jerzy Morgiel ◽  
Tomasz Mościcki ◽  
Leszek Stobiński ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Carbon Dots ◽  
Optical Measurements ◽  
Nanosecond Laser ◽  
Graphite Target ◽  
Laser Ablation In Liquid ◽  
Nanosecond Laser Ablation ◽  
Fluorescent Molecules ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

Fluorescent carbon dots (CDs) synthesized by pulsed laser ablation in liquid (PLAL) are still interesting materials due to their possible applications. However, unlike CDs produced by the hydrothermal method, CDs produced the synthesis products by the PLAL method were never separated by dialysis, which differentiates the synthesis products and allows the identification of the main source of fluorescence. In this work, the synthesis of fluorescent carbon dots (CDs) was performed by nanosecond laser ablation of a graphite target immersed in polyethyleneimine (PEI) and ethylenediamine (EDA), and the synthesis products were separated by dialysis. The results of optical measurements showed that the main source of luminescence of the obtained nanostructures are fluorescent particles or quasi-molecular fluorophores created in the ablation process. In the case of ablation in PEI, most of the produced molecular fluorophores are associated with carbogenic nanostructures, while in the case of EDA, free fluorescent molecules dominate.

Controlling the properties of TiO2 nanoparticles generated by nanosecond laser ablation in liquid solution

Laser Physics ◽  
2018 ◽  
Vol 28 (8) ◽  
pp. 085601 ◽  
Author(s):  
Mahsa Pashazadeh ◽  
Elnaz Irani ◽  
Mir Maqsood Golzan ◽  
Rasoul Sadighi-Bonabi
Keyword(s):  
Laser Ablation ◽  
Tio2 Nanoparticles ◽  
Liquid Solution ◽  
Nanosecond Laser ◽  
Laser Ablation In Liquid ◽  
Nanosecond Laser Ablation

Preparation of platinum modified titanium dioxide nanoparticles with the use of laser ablation in water

2014 ◽  
Vol 16 (29) ◽  
pp. 15199-15206 ◽  
Author(s):  
K. Siuzdak ◽  
M. Sawczak ◽  
M. Klein ◽  
G. Nowaczyk ◽  
S. Jurga ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Laser Ablation ◽  
Preparation Method ◽  
Titanium Dioxide Nanoparticles ◽  
Nanosecond Laser ◽  
Laser Ablation In Liquid ◽  
Nanosecond Laser Ablation ◽  
Nanocrystalline Titanium ◽  
Nanocrystalline Titanium Dioxide

We report on the preparation method of nanocrystalline titanium dioxide modified with platinum by using nanosecond laser ablation in liquid (LAL).

scholarly journals Micro- and nanoparticle generation during nanosecond laser ablation: correlation between mass and optical emissions

2014 ◽  
Vol 22 (4) ◽  
pp. 3991 ◽  
Author(s):  
Santiago Palanco ◽  
Salvatore Marino ◽  
M. Gabás ◽  
Shanti Bijani ◽  
Luis Ayala ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Nanosecond Laser ◽  
Optical Emissions ◽  
Nanosecond Laser Ablation ◽  
Nanoparticle Generation
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