scholarly journals Potassium Sulfate: A New Candidate to Explore Non-Photochemical Laser-Induced Nucleation Mechanisms

Crystals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1571
Author(s):  
Mélody Briard ◽  
Clément Brandel ◽  
Sandrine Morin-Grognet ◽  
Gérard Coquerel ◽  
Valérie Dupray
Keyword(s):  
Laser Pulses ◽  
Potassium Sulfate ◽  
Gas Content ◽  
Nanosecond Laser ◽  
Nucleation Behavior ◽  
Spontaneous Nucleation ◽  
Nucleation Mechanisms ◽  
Nanosecond Laser Pulses ◽  
Supersaturated Solutions

In this paper, we report a study on the nucleation behavior of potassium sulfate (K2SO4) from aqueous solutions under the influence of unfocused nanosecond laser pulses. The objective is to contribute to the general understanding of the Non-Photochemical Laser-Induced Nucleation (NPLIN) mechanism. First, the influence of several parameters such as supersaturation as well as laser parameters (pulse energy, number of pulses, and laser polarization) on induction time, probability of nucleation and mean number of crystals in comparison with spontaneous nucleation was investigated. Then, we examined the influence of gas composition (i.e., degassing and gas bubbling (CO2 and N2)) of the supersaturated solutions on the NPLIN kinetics, showing no correlation between gas content (or nature) on the crystallization behavior. Our study questions the role of impurities within the solution regarding the mechanism of laser-induced nucleation.

Role of electron heating in efficient interaction of a nanosecond laser with the cluster media: a case study on tetrahydrofuran cluster system

RSC Advances ◽  
2016 ◽  
Vol 6 (91) ◽  
pp. 87897-87904 ◽  
Author(s):  
Pramod Sharma ◽  
Soumitra Das ◽  
Rajesh K. Vatsa
Keyword(s):  
Mass Spectrometer ◽  
Time Of Flight ◽  
Laser Pulses ◽  
Nanosecond Laser ◽  
Electron Heating ◽  
Flight Mass Spectrometer ◽  
System P ◽  
Nanosecond Laser Pulses

Interaction of tetrahydrofuran clusters with nanosecond laser pulses has been investigated at 532 and 1064 nm, using a time-of-flight mass spectrometer and home-built electron analyzer setup.

Ablation of molecular solids under nanosecond laser pulses: The role of inertial confinement

2006 ◽  
Vol 89 (14) ◽  
pp. 141907 ◽  
Author(s):  
Danny Perez ◽  
Laurent J. Lewis ◽  
Patrick Lorazo ◽  
Michel Meunier
Keyword(s):  
Laser Pulses ◽  
Nanosecond Laser ◽  
Molecular Solids ◽  
Inertial Confinement ◽  
Nanosecond Laser Pulses

Role of laser-induced plasma in ultradeep drilling of materials by nanosecond laser pulses

2011 ◽  
Vol 257 (24) ◽  
pp. 10876-10882 ◽  
Author(s):  
Nadezhda M. Bulgakova ◽  
Anton B. Evtushenko ◽  
Yuri G. Shukhov ◽  
Sergey I. Kudryashov ◽  
Alexander V. Bulgakov
Keyword(s):  
Laser Pulses ◽  
Nanosecond Laser ◽  
Laser Induced Plasma ◽  
Nanosecond Laser Pulses

Formation of Periodical Sub-Micron Sized Structures on Silicon by Interfered Nanosecond Laser Pulses

2010 ◽  
Vol 97-101 ◽  
pp. 3803-3806
Author(s):  
Yong Xiang Hu ◽  
Heng Zhang ◽  
Zheng Qiang Yao
Keyword(s):  
Cost Effective ◽  
Laser Pulses ◽  
Laser Beams ◽  
Nanosecond Laser ◽  
Effective Technique ◽  
First Order ◽  
Direct Fabrication ◽  
Cost Effective Technique ◽  
Nanosecond Laser Pulses ◽  
Micro Structuring

Laser interference micro-structuring is a relatively efficient and cost-effective technique for fabricating periodical micro-nano-structuring surfaces. The direct fabrication of sub-micron sized dot array on silicon was performed by four interfering nanosecond laser beams with a diffractive beam splitter. The mechanism to form the dot array was analyzed and it was found that the obtained conical dot array had a negative shape of the interference pattern of four laser beams. A second-order peak between two first-order peaks also occurred due to the liquid-solid expansion.

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