Scale-up of nanoparticle production during laser ablation of ceramics in liquid media
Abstract
The study presents results in scale-up of nanoparticle production by laser ablation of ceramics in liquid media and gives a better understanding of influences of laser and process parameters on the nanoparticle productivity. Results presented in this work clearly reveal that laser fluence or pulse energy, laser pulse overlap on the target surface and laser repetition rate are the key parameters determining material removal rate and nanoparticle generation efficiency. The investigations show significant increase of several factors in nanoparticle productivity. Beside laser fluence we observed that a specific laser pulse overlap is required for increase of nanoparticle productivity. Investigations show that interpulse distance of 75 µm associated with 4 kHz laser frequency result in significant increase of material removal rate by factor 3 compared to machining in pulse overlap mode. Furthermore, material removal rate could be increased by factor 7 only by adjusting repetition rate from 9 kHz to 4 kHz using equal laser fluence and pulse overlap. In both cases we concluded that laser shielding on previously ejected nanoparticles combined with optimized temperature gradient occurred in the target material may play the important role in the enhancement of nanoparticle productivity. Using optimized laser and process parameters, 21.5 mg/min of ceramic nanoparticle productivity was reached by 4.65 mJ focalized laser pulse energy in aqueous media.
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Sattari et al. achieved full pulse separation and reached a maximum productivity at a specific interpulse distance.
“The authors achieved full pulse separation, and reached a maximum productivity at a specific interpulse distance.”
From Nanoparticles Engineering by Pulsed Laser Ablation in Liquids: Concepts and Applications (2020) · cites this paper as [84]
A linear decrease in productivity at higher interpulse distances followed in Sattari et al.'s study.
“A linear decrease in productivity at higher distances followed.”
From Nanoparticles Engineering by Pulsed Laser Ablation in Liquids: Concepts and Applications (2020) · cites this paper as [84]
Sattari et al. found that the productivity of LAL can be increased by reducing the spatial overlap of successive laser pulses by increasing the scanning speed in nanosecond-pulsed, IR laser ablation of Al2O3 in water.
“Sattari et al. [84] found that the productivity of LAL can be increased by reducing the spatial overlap of successive laser pulses by increasing the scanning speed in the nanosecond-pulsed, IR laser ablation of Al2O3 in water.”
From Nanoparticles Engineering by Pulsed Laser Ablation in Liquids: Concepts and Applications (2020) · cites this paper as [84]
The decrease in productivity at longer interpulse distances without overlap was less pronounced in Wagener et al.'s study compared to Sattari et al.'s study.
“However, the decrease in productivity at longer interpulse distances without overlap was less pronounced compared to the results of the study of Sattari et al. [84].”
From Nanoparticles Engineering by Pulsed Laser Ablation in Liquids: Concepts and Applications (2020) · cites this paper as [84]
The strategy to reduce shielding caused by previous pulses is to spatially separate successive laser pulses by adjusting the interplay of the laser spot size, the scanning speed and the pulse repetition rate.
“The strategy is to spatially separate successive laser pulses by adjusting the interplay of the laser spot size, the scanning speed (relative movement between laser beam and target) and the pulse repetition rate to avoid shielding caused by the previous pulse [82,84,90,91,116].”
From Nanoparticles Engineering by Pulsed Laser Ablation in Liquids: Concepts and Applications (2020) · cites this paper as [84]
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Nanoparticles Engineering by Pulsed Laser Ablation in Liquids: Concepts and Applications
Fazio, E., Gökce, B., De Giacomo, A., Meneghetti, M., Compagnini, G., Tommasini, M., Waag, F., Lucotti, A., Zanchi, C. G., Ossi, P. M., et al. (2020) · Nanomaterials · doi:10.3390/nano10112317 · Cited by 346 · see citing works
“[84] found that the productivity of LAL can be increased by reducing the spatial”
BackgroundInfluential
- Authors
- Sattari, R., Sajti, C. L., Khan, S., & Barcikowski, S.
- Affiliations
- Laser Zentrum Hannover (DE)
- Venue
- ICALEO 2008: 27th International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing
- Publisher
- Laser Institute of AmericaLIA
- Published
- 2008-10-01
- OpenAlex
- W2973175547
- Cited by
- 8
- References
- 0
- Citations by year
- 2024: 1 · 2020: 1
- FWCI
- 4.35
- Type
- conference paper
- Language
- en
- Open access
- closed
- Locations
- International Congress on Applications of Lasers & Electro-Optics (ICALEO) (publishedVersion)
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Laser-Ablation Synthesis of Nanoparticles
- Physical Sciences › Engineering › Computational Mechanics › Laser Material Processing Techniques
- Physical Sciences › Engineering › Biomedical Engineering › Advanced Surface Polishing Techniques
- Keywords
- laser ablation in liquid, ceramic nanoparticles, laser fluence, pulse overlap, laser repetition rate, material removal rate, temperature gradient, aqueous media
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