Influences on Nanoparticle Production during Pulsed Laser Ablation

Hahn, Anne

doi:10.2961/jlmn.2008.02.0003

Cited by 86 publications

(41 citation statements)

References 2 publications

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“…The difference in the absolute transmittance values of different samples near the plasmonic peak could be due to differences in the molar concentration of different NPs sizes within each polydispersion. In fact, as reported in the literature, both molar concentrations and dimensions of NPs strongly affect optical spectra [38][39][40][41][42][43][44] and polydispersed suspensions show an inhomogeneous broadening in the spectra. 40 If the pre-and postcycling spectra (Fig.…”

Section: Optical Propertiesmentioning

confidence: 62%

Synthesis and characterization of gold/water nanofluids suitable for thermal applications produced by femtosecond laser radiation

et al. 2016

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, "Synthesis and characterization of gold/water nanofluids suitable for thermal applications produced by femtosecond laser radiation," J. Photon. Energy 6(3), 034001 (2016), doi: 10.1117/1.JPE.6.034001. Abstract. A laser-based "green" synthesis of nanoparticles (NPs) was used to manufacture gold NPs in water. The light source is a Ti:Sapphire laser with 30 fs FWHM pulses, 800 nm mean wavelength, and 1 kHz repetition rate. The method involves two stages: (1) pulsed laser ablation in liquids and (2) photo-fragmentation (PF). Highly pure and well-dispersed NPs with a diameter of 18.5 nm that can be stored at room temperature without showing any agglomeration over a period of at least 3 months were produced without the need to use any stabilizer. Transmittance spectra, extinction coefficient, NPs agglomeration dynamics, and thermal conductivity of the nanofluids obtained were analyzed before and after being submitted to thermal cycling and compared to those obtained for commercial gold/water suspensions. Optical properties have also been investigated, showing no substantial differences for thermal applications between NPs produced by the laser ablation and PF technique and commercial NPs. Therefore, nanofluids produced by this technique can be used in thermal applications, which are foreseen for conventional nanofluids, e.g., heat transfer enhancement and solar radiation direct absorption, but offering the opportunity to produce them in situ in almost any kind of fluid without the production of any chemical waste.

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Section: Optical Propertiesmentioning

confidence: 62%

Synthesis and characterization of gold/water nanofluids suitable for thermal applications produced by femtosecond laser radiation

et al. 2016

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“…In this research, as in many cases of such type of investigations [3,5,10,11,[18][19][20], it has been shown that concentration of generated particles and their size distribution depend on the experimental medium, target material properties, and laser process parameters. At first, the formation of nanoparticles and their size were affected by parameters of laser irradiation -the intensity, pulse length, and radiation wavelength.…”

Section: Discussionmentioning

confidence: 99%

Generation of metal nanoparticles by laser ablation

Dudoitis¹,

Ulevičius²,

Račiukaitis³

et al. 2011

Lith. J. Phys.

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The process of nanoparticle generation during nanosecond and picosecond laser ablation of various metals (Ni, Al, W, and stainless steel) in ambient air and argon gas was investigated. The number concentration of nanoparticles generated by laser ablation in argon gas was up to 100 times higher compared to that in ambient air. Three stable separate size peaks of nucleation, Aitken, and accumulation modes of nanoparticles were observed in case of argon gas, while in ambient air particles of a wide size spectrum (8-200 nm) were generated. The natural precursors in ambient air can have an effect on the size spectrum of particles composed of various chemical compounds with target material during the ablation process. The influence of laser process parameters and properties of investigated metals on the number concentration and size distribution of nanoparticles generated during ns-and ps-laser ablation was observed.

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“…Applications of the PLAL technique and the photo-fragmentation additional process include, but are not limited to, the production of NPs of metallic and semiconductor materials (7)(8)(9)(10)(11), the morphological modification of nano-structures (12; 13), or the synthesis of nanomaterials with chemical active fluids without needing a physical target (14; 15). Synthesized like-flower NPs with potential abilities for surface enhanced Raman Scattering was also proved by Lu et al (16).…”

Section: Introductionmentioning

confidence: 99%

Fabrication of gold nanoparticles in Therminol VP-1 by laser ablation and fragmentation with fs pulses

Torres–Mendieta¹,

Mondragón²,

Juliá³

et al. 2014

Laser Phys. Lett.

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Abstract.This paper reports a physical method to produce highly pure, size controlled and well dispersed spherical gold nanoparticles (NPs) in Therminol VP-1 by pulsed laser ablation in liquids (PLAL) using a 30f s Ti:Shappire laser at a fluence of 1J/cm 2 . A second photo-fragmentation of the ablated colloid solution by subsequent treatment with the same laser light yields a mean size and size dispersion of the NPs of 58±31nm. A study of the nanofluid properties reveals a low agglomeration over time and an enhancement of thermal conductivity of base fluid by up to 4%. These results improve the characteristics of the current nanofluids in thermal oils that may have a potential impact in the improvement of the harvesting of solar light.

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Influences on Nanoparticle Production during Pulsed Laser Ablation

Cited by 86 publications

References 2 publications

Synthesis and characterization of gold/water nanofluids suitable for thermal applications produced by femtosecond laser radiation

Synthesis and characterization of gold/water nanofluids suitable for thermal applications produced by femtosecond laser radiation

Generation of metal nanoparticles by laser ablation

Fabrication of gold nanoparticles in Therminol VP-1 by laser ablation and fragmentation with fs pulses

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