Hydrodynamics of a metal surface melt under the action of laser radiation: Observation of regime changes in the real-time mode

Багаев, С. Н.; Prokoshev, V. G.; Kucherik, A. O.; Abramov, D. V.; Arakelyan, S. M.; Klimovskii, I. I.

doi:10.1134/1.1710677

Cited by 3 publications

(6 citation statements)

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“…[33,34] In this case, ad irect visualizationo fe volution of microparticle positionsa llows one to monitor in real time convection flows in the vertical plane. An efficient methodt oc ontrol these flows is based on the employment of water-dispersed microparticles as markers of hydrodynamic processes in liquids.…”

Section: Resultsmentioning

confidence: 99%

“…Previously,s uch an approach enabled us to follow convection flows in the vertical plane [33] by introducing nickel microparticles (diameter 1 mm) as markers of the involved hydrodynamic processes. Previously,s uch an approach enabled us to follow convection flows in the vertical plane [33] by introducing nickel microparticles (diameter 1 mm) as markers of the involved hydrodynamic processes.…”

Section: Methodsmentioning

confidence: 99%

“…Previously,s uch an approach enabled us to follow convection flows in the vertical plane [33] by introducing nickel microparticles (diameter 1 mm) as markers of the involved hydrodynamic processes. [33] For nanomaterial characterization, high-resolution transmission electron microscopy (HRTEM) measurements were performed with aJ EOL JEM 3010 system operating at 300 kV.Adrop of freshly prepared solution was placed on ac arbon-coated copper grid, dried at ambient conditions and examined by using the TEM system. [33] For nanomaterial characterization, high-resolution transmission electron microscopy (HRTEM) measurements were performed with aJ EOL JEM 3010 system operating at 300 kV.Adrop of freshly prepared solution was placed on ac arbon-coated copper grid, dried at ambient conditions and examined by using the TEM system.…”

Section: Methodsmentioning

confidence: 99%

“…Additionally,l aser-induced phenomena were visualized in the liquid ambience in real time. Previously,s uch an approach enabled us to follow convection flows in the vertical plane [33] by introducing nickel microparticles (diameter 1 mm) as markers of the involved hydrodynamic processes. [34] For the visualization of the hydrodynamics phenomena we used ad iagnostics laser system called «laser monitor».…”

Section: Methodsmentioning

confidence: 99%

“…[34] For the visualization of the hydrodynamics phenomena we used ad iagnostics laser system called «laser monitor». [33] For nanomaterial characterization, high-resolution transmission electron microscopy (HRTEM) measurements were performed with aJ EOL JEM 3010 system operating at 300 kV.Adrop of freshly prepared solution was placed on ac arbon-coated copper grid, dried at ambient conditions and examined by using the TEM system. To calculate size distribution diagrams, overall 1000 particles were analyzed by using Image-Pro Plus software for each sample.…”

Section: Methodsmentioning

confidence: 99%

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Cavitation‐Free Continuous‐Wave Laser Ablation from a Solid Target to Synthesize Low‐Size‐Dispersed Gold Nanoparticles

et al. 2017

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Continuous wave (CW) radiation from a Yb-fiber laser (central wavelength 1064 nm, power 1-200 W) was used to initiate ablation of a gold target in deionized water and to synthesize bare (unprotected) gold nanoparticles. We show that the formed nanoparticles present a single low-size-dispersed population with a mean size of the order of 10 nm, which contrasts with previously reported data on dual populations of nanoparticles formed during pulsed laser ablation in liquids. The lack of a second population of nanoparticles is explained by the absence of cavitation-related mechanism of material ablation, which typically takes place under pulsed laser action on a solid target in liquid ambience, and this supposition is confirmed by plume visualization tests. We also observe a gradual growth of mean nanoparticle size from 8-10 nm to 20-25 nm under the increase of laser power for 532 nm pumping wavelength, whereas for 1064 nm pumping wavelength the mean size 8-10 nm is independent of radiation power. The growth of the nanoparticles observed for 532 nm wavelength is attributed to the enhanced target melting and splashing followed by additional heating due to an efficient excitation of plasmons over gold nanoparticles. Bare, low-size-dispersed gold nanoparticles are of importance for a variety of applications, including biomedicine, catalysis, and photovoltaics. The use of CW radiation for nanomaterial production promises to improve the cost efficiency of this technology.

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Section: Resultsmentioning

confidence: 99%

“…Previously,s uch an approach enabled us to follow convection flows in the vertical plane [33] by introducing nickel microparticles (diameter 1 mm) as markers of the involved hydrodynamic processes. Previously,s uch an approach enabled us to follow convection flows in the vertical plane [33] by introducing nickel microparticles (diameter 1 mm) as markers of the involved hydrodynamic processes.…”

Section: Methodsmentioning

confidence: 99%

“…Previously,s uch an approach enabled us to follow convection flows in the vertical plane [33] by introducing nickel microparticles (diameter 1 mm) as markers of the involved hydrodynamic processes. [33] For nanomaterial characterization, high-resolution transmission electron microscopy (HRTEM) measurements were performed with aJ EOL JEM 3010 system operating at 300 kV.Adrop of freshly prepared solution was placed on ac arbon-coated copper grid, dried at ambient conditions and examined by using the TEM system. [33] For nanomaterial characterization, high-resolution transmission electron microscopy (HRTEM) measurements were performed with aJ EOL JEM 3010 system operating at 300 kV.Adrop of freshly prepared solution was placed on ac arbon-coated copper grid, dried at ambient conditions and examined by using the TEM system.…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Cavitation‐Free Continuous‐Wave Laser Ablation from a Solid Target to Synthesize Low‐Size‐Dispersed Gold Nanoparticles

et al. 2017

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Laser ablative nanostructuring of Au in liquid ambience in continuous wave illumination regime

et al. 2016

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International audienceGold nanoparticles (Au NPs) attract particular attention because of their unique size-dependent chemical, physicochemical and optical properties and, hence, their potential applications in catalysis, nanoelectronics, photovoltaics and medicine. In particular, laser-produced colloidal nanoparticles are not only biocompatible, but also reveal unique chemical properties. Different laser systems can be used for synthesis of these colloids, varying from continuous wave (CW) to ultra-short femtosecond lasers. The choice of an optimum laser system is still a challenge in application development. To bring more light at this issue, we investigate an influence of laser parameters on nanoparticle formation from a gold target immersed in deionized water. First, an optical diagnostics of laser-induced hydrodynamic processes taking place near the gold surface is performed. Then, gold nanoparticle colloids with average particle sizes smaller than 10 nm and a very narrow dispersion are shown to be formed by CW laser ablation. The obtained results are compared with the ones obtained by using the second harmonics and with previous results obtained by using femtosecond laser systems. © (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only

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Nano-Optics of Thin-Film Laser-Induced Topological Structures on a Solid Surface: Fundamental Phenomena and Their Applications

Bagayev

Аракелян

Kucherik

et al. 2020

Bull. Russ. Acad. Sci. Phys.

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Hydrodynamics of a metal surface melt under the action of laser radiation: Observation of regime changes in the real-time mode

Cited by 3 publications

References 1 publication

Cavitation‐Free Continuous‐Wave Laser Ablation from a Solid Target to Synthesize Low‐Size‐Dispersed Gold Nanoparticles

Cavitation‐Free Continuous‐Wave Laser Ablation from a Solid Target to Synthesize Low‐Size‐Dispersed Gold Nanoparticles

Laser ablative nanostructuring of Au in liquid ambience in continuous wave illumination regime

Nano-Optics of Thin-Film Laser-Induced Topological Structures on a Solid Surface: Fundamental Phenomena and Their Applications

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