A simple finite element model to study the effect of plasma plume expansion on the nanosecond pulsed laser ablation of aluminum

Wang, Yeqing; Hahn, David W.

doi:10.1007/s00339-019-2951-8

Cited by 16 publications

(9 citation statements)

References 54 publications

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“…With the increasing temperature, material quickly melts and leaves the surface due to evaporation and material phase explosion. [31] The photothermal processes depend mainly on the optical absorption of the target material and the thermal response of the solid material decreases exponentially with the depth from the target surface. [32] Meanwhile, the fast evaporation of material from the surface creates a shock wave, and the mechanical stresses in the target trigger photomechanical processes that cause fragmentation and further ablation of the target material.…”

Section: Discussionmentioning

confidence: 99%

Pulsed Laser Ablation of Polymer-based Magnetic Nanocomposites for Oil Spill Remediation

Gera

Kondász

Smausz

et al. 2023

Preprint

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Oil spills pose a significant threat to marine life and finding cost-effective and environmentally friendly solutions is crucial. In this study, pulsed laser ablation (PLA) was applied to produce polymer-based magnetic nanocomposites for oil spill remediation. The selected polymers (polyvinylpyrrolidone, chitosan, and methyl cellulose) are known for their adsorptive removal of polluting residues from various oil species. PLA was performed on pressed tablets containing magnetite nanoparticles (NPs) and polymers, and the generated particles were collected using an external magnetic field. The chemical composition of the ablated products was analyzed using Fourier-transform infrared (FTIR) and Raman spectroscopy, while particle sizes were measured using Leica Image Processing and Analysis System. The study demonstrated that PLA is a single-step, green, and efficient technique for preparing magnetic nanocomposites for oil spill treatment. The average particle size of the composites was in the 1.5–4 µm range, considerably smaller than the initial size of the corresponding polymer. The oil/water separation process using these composites was demonstrated, with separation occurring ~ 1 s after applying the magnetic field. These findings suggest that PLA-generated magnetic nanocomposites have significant potential for oil spill remediation applications.

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Section: Discussionmentioning

confidence: 99%

Pulsed Laser Ablation of Polymer-based Magnetic Nanocomposites for Oil Spill Remediation

Gera

Kondász

Smausz

et al. 2023

Preprint

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“…Three fundamental mechanisms have been identified as the main factors: the transition from evaporative to volumetric mass removal occurring at the critical temperature, the collisional and radiative processes underlying the initial plasma formation stage, and the increased impact of the liquid ejection mechanism. Wang et al further considered the plasma-shielding effect to simulate the pulsed laser ablation of an aluminum target using finite element analysis 20 .…”

Section: Zhenyu Zhao * and Weizhong LImentioning

confidence: 99%

Numerical simulation of laser-produced plasma expansion on a droplet surface

Zhao

Li²

2023

Sci Rep

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In this study, a numerical model of the plasma expansion on a droplet surface based on the initial plasma method was proposed. The initial plasma was obtained through the pressure inlet boundary condition, and the effect of ambient pressure on the initial plasma and adiabatic expansion of the plasma on the droplet surface, including the effect on the velocity and temperature distribution, were investigated. The simulation results showed that the ambient pressure decreased, leading to an increase in the expansion rate and temperature, and therefore a larger plasma size was formed. Plasma expansion creates a backward driving force and eventually envelops the entire droplet, indicating a significant difference compared to planar targets.

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“…Laser texturing is applicable to various materials, such as metals and their alloys, superalloys [8], ceramics [3], wood [9], composite materials [10] and others. Due to its wide application in industry, aluminum and its alloys are the subject of increased research, including regarding the possibilities of its laser processing [11].…”

Section: Introductionmentioning

confidence: 99%

Application of a Finite Element Model to Obtain the Influence of the Treatment’s Power, Reflecion and Focal Diameter in Laser Texturing of Aluminum

Lazov

Draganov

2023

ETR

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In this work, a numerical model of laser texturing is considered. A finite element model of a representative sample of pure aluminum was created. The impact of a laser pulse was simulated, assuming a Gaussian volume distribution of the heat flux. Material properties are assumed to be constant and latent heat is accounted for. Results are obtained for the thermal field and the width of the vaporized zone, assuming that the crater is characterized by its maximum width. The numerical model was used to study the influence of pulse power density, reflection, focal diameter and pulse duration. The ablation threshold at different laser pulse durations was determinate.

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A simple finite element model to study the effect of plasma plume expansion on the nanosecond pulsed laser ablation of aluminum

Cited by 16 publications

References 54 publications

Pulsed Laser Ablation of Polymer-based Magnetic Nanocomposites for Oil Spill Remediation

Pulsed Laser Ablation of Polymer-based Magnetic Nanocomposites for Oil Spill Remediation

Numerical simulation of laser-produced plasma expansion on a droplet surface

Application of a Finite Element Model to Obtain the Influence of the Treatment’s Power, Reflecion and Focal Diameter in Laser Texturing of Aluminum

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