scholarly journals Picosecond Pulsed Laser Ablation of Liquid Covered Stainless Steel: Ef-fect of Liquid Layer Thickness on Ablation Efficiency

2019 ◽  
Keyword(s):  
Stainless Steel ◽  
Laser Ablation ◽  
Layer Thickness ◽  
Liquid Layer ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Ablation Efficiency ◽  
Liquid Layer Thickness

Preparation of Ag Nanoparticles Colloid by Pulsed Laser Ablation in Distilled Water

2008 ◽  
Vol 373-374 ◽  
pp. 346-349 ◽  
Author(s):  
Bing Xu ◽  
Ren Guo Song ◽  
P.H. Tang ◽  
J. Wang ◽  
Guo Zhong Chai ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Ag Nanoparticles ◽  
Surface Active Agent ◽  
Active Agent ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Average Diameter ◽  
Distilled Water ◽  
Ablation Efficiency ◽  
Transmission Electron

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.

scholarly journals Evolution of Microstructures on Stainless Steel induced by Ultra-Short Laser Ablation

2019 ◽  
Author(s):  
Norbert Ackerl ◽  
Gabriela Fisch ◽  
Janko Auerswald ◽  
Konrad Wegener
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Laser Ablation ◽  
Grain Orientation ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Surface Structures ◽  
Periodic Surface ◽  
Processing Window ◽  
Grain Orientations

Ultra-short pulsed laser ablation of stainless steel is accompanied by the evolution of different microstructures. Depending on the fuence, accumulated energy and number of laser passes cones from impurities, laser induced periodic surface structures and conelike protrusion (CLP) evolve at the surface. These often unwanted morphologies can be inhibited by carefully choosing the strategy and laser parameters. Here, the identifed region shows a small processing window fordesigned 515nm sub 1 ps ablation leading to low surface roughness. CLP are still not well understood and here a pre-cursor structure is reported. Subsequently, the CLP growth is grain orientation and polarization dependent and studied in more depth. Preferentially, CLP start to evolve at the (101) grain orientations with linear polarized laser radiation. Moreover, a nanoindentation study reveals robust mechanical properties, which could be beneficial for tribology applications in the hydrodynamic regime.

Nanosecond Pulsed Laser Ablation on Stainless Steel − Combining Finite Element Modeling and Experimental Work

2019 ◽  
Vol 21 (8) ◽  
pp. 1900193 ◽  
Author(s):  
Jun‐Jie Zhang ◽  
Liang Zhao ◽  
Andreas Rosenkranz ◽  
Cheng‐Wei Song ◽  
Yong‐Da Yan ◽  
...  
Keyword(s):  
Finite Element ◽  
Stainless Steel ◽  
Laser Ablation ◽  
Finite Element Modeling ◽  
Experimental Work ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Element Modeling ◽  
Nanosecond Pulsed Laser

Parametric optimization of pulsed laser ablation on stainless steel for improving corrosion resistance by Taguchi method

2018 ◽  
Vol 6 (2) ◽  
pp. 026533
Author(s):  
Sze Ney Chan ◽  
Wai Yin Wong ◽  
Rashmi Walvekar ◽  
Abdul Amir H Kadhum ◽  
Mohammad Khalid
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Laser Ablation ◽  
Taguchi Method ◽  
Parametric Optimization ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation

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

2016 ◽  
Vol 880 ◽  
pp. 110-113 ◽  
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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