Modeling of femtosecond ablation of aluminum film with single laser pulses

Mazhukin, V. I.; Demin, Mikhail Mikhailovich

doi:10.1016/j.apsusc.2010.11.154

Cited by 18 publications

(7 citation statements)

References 6 publications

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“…Thus the proposed model clearly demonstrates the ionic temperature jump in a modified isochoric formulation of the Stefan problem. This effect is not obvious in the much more complicated approach for simulations of the laser-matter interaction [29] in which the full system of two-temperature hydrodynamic equations is solved together with the Stefan problem.…”

Section: Resultsmentioning

confidence: 98%

Two-phase isochoric Stefan problem for ultrafast processes

Krasnova

Levashov

2015

International Journal of Heat and Mass Transfer

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Section: Resultsmentioning

confidence: 98%

Two-phase isochoric Stefan problem for ultrafast processes

Krasnova

Levashov

2015

International Journal of Heat and Mass Transfer

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“…The processing of aluminum with a pulsed laser has been studied for several decades. J. Gao et al established a theoretical model of the transient stable thermal-mechanical direct coupling for laser-material interaction using highenergy nanosecond laser systems 13 and A. Mazhukin et al constructed a model for the ablation of aluminum films using a single-pulse femtosecond laser 14 . There are also some experimental studies on the effects of ambient atmosphere 15 , laser wavelength 16 , and other conditions [17][18][19][20][21] on the laser ablation of aluminum films.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on realizing blind micro-grooves on the surface of an aluminum sheet using two nanosecond lasers

Wang¹,

Xing²,

Huang³

et al. 2022

Thirteenth International Conference on Information Optics and Photonics (CIOP 2022)

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Although aluminum processing with lasers has become popular in industrial applications, machining some blind grooves or blind holes with a required size in aluminum sheets is also a difficult task for laser technicians. In this paper, blind grooves with the depth of about 0.1 mm and the width of less than 0.1 mm on a 0.24 mm thick aluminum sheet have been realized by using two kinds of nanosecond Q-switched lasers without burning the coating polymer layer. The effects of the laser wavelength, average power, and scanning speed on laser processing have been investigated in detail. The groove machining of aluminum sheets has been carried out at different laser power and machining speeds by use of two Q-switched lasers with the wavelengths of 532 nm and 355 nm. The experiment result shows that the faster the scanning speed, the better the processing efficiency. And the status of blind grooves processed by a 355 nm laser is cleaner and smarter. In summary, the optimal laser parameters for processing grooves on the aluminum surface are the peak power density of 2.27×108 W/cm2 with the scanning speed of 0.1 mm/s for a 355 nm nanosecond laser. The results of our study might be of great importance as a reference for processing blind grooves on aluminum sheets in some industrial applications.

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“…One of the promising directions in the generation of nanoparticles and nanoclusters is laser ablation of materials by ultrashort (femto-picosecond) pulses [9,10]. Femto-picosecond ablation occurs under conditions of strong thermodynamic non-equilibrium, which is characterized, in particular, by the presence of two temperatures: electron T e for the degenerate gas of free electrons and phonon T ph for the crystal lattice.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, in most cases, knowledge of only the general thermal conductivity of metals was required; therefore, it was not necessary to separate the electronic and phonon thermal conductivity. The interest in quantifying phonon thermal conductivity in metals was stimulated primarily by the need for a deeper understanding of the mechanisms of thermal transfer during nonequilibrium energy transfer in a number of applications, for example, [10,11].…”

Section: Introductionmentioning

confidence: 99%

Molecular dynamic calculation of lattice thermal conductivity of gold in the melting-crystallization region

Demin¹,

Mazhukin²,

Aleksashkina³

2019

MathMon

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Of all the metals, gold is the most well-known and widely used material in scientific research, industrial production and, more recently, in biomedicine problems. In the temperature range 300 ≤ T ≤ 2000 K, including the region of the meltingcrystallization phase transition, the results of modeling the phonon thermal conductivity of gold are presented. Phonon thermal conductivity plays an important role in modeling the mechanisms of interaction of pulsed laser radiation with gold in the framework of the two-temperature continuum model. In the region of the phase transition, overheating-undercooling of the solid phase occurs, the substance changes its structure. These phenomena are associated with changes in the phonon subsystem of gold, therefore, for mathematical modeling of heatingcooling, it is necessary to know the characteristic of heat transfer as the thermal conductivity of the phonon subsystem of gold. Obtaining the temperature dependence of phonon thermal conductivity in such a wide temperature range from experiment is problematic. In this work, phonon thermal conductivity was obtained by the direct non-equilibrium method in the framework of molecular dynamics modeling using the EAM potential.

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Modeling of femtosecond ablation of aluminum film with single laser pulses

Cited by 18 publications

References 6 publications

Two-phase isochoric Stefan problem for ultrafast processes

Two-phase isochoric Stefan problem for ultrafast processes

Experimental study on realizing blind micro-grooves on the surface of an aluminum sheet using two nanosecond lasers

Molecular dynamic calculation of lattice thermal conductivity of gold in the melting-crystallization region

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