Laser-induced agglomeration of gold nanoparticles dispersed in a liquid

Serkov, A. A.; Shcherbina, M. E.; Kuzmin, P. G.; Кириченко, Н. А.

doi:10.1016/j.apsusc.2014.09.173

Cited by 17 publications

(12 citation statements)

References 20 publications

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“…There may be some threshold nanoparticle concentration below which the nanoparticle colloidal solution remains stable and above which the number of agglomerates sharply increases. A similar effect of formation of large agglomerates was observed in [20] during nanoparticle fragmentation. It was suggested in [20] that, when the nanoparticle concentration reaches some value, the number of collisions increases additionally under laser irradiation due to the secondary Bjerknes forces acting at the instant of formation of cavitation region and generation of a cavitation bubble.…”

Section: Discussionsupporting

confidence: 68%

“…A similar effect of formation of large agglomerates was observed in [20] during nanoparticle fragmentation. It was suggested in [20] that, when the nanoparticle concentration reaches some value, the number of collisions increases additionally under laser irradiation due to the secondary Bjerknes forces acting at the instant of formation of cavitation region and generation of a cavitation bubble. The occurrence of large gold nanoparticles under long-term irradiation was explained in terms of this concept.…”

Section: Discussionsupporting

confidence: 68%

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Evolution of the Size Distribution of Gold Nanoparticles under Laser Irradiation

et al. 2021

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The fragmentation of colloidal gold solution in pure water by nanosecond Nd:YAG laser radiation is found to be characterized by a threshold value of nanoparticle concentration, below which the colloidal solution remains stable. Above the threshold, large agglomerates of particles are intensively formed in the colloidal solution; this process manifests itself both in the absorption spectra and in the particle-size distribution. It is shown that the limiting concentration depends linearly on the average size of gold nanoparticles. The critical concentration for 7-nm nanoparticles is approximately 2 × 10 11 mL -1 , whereas the corresponding concentration for nanoparticles 17 nm in diameter is an order of magnitude lower: 2 × 10 10 mL -1 .

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Section: Discussionsupporting

confidence: 68%

Section: Discussionsupporting

confidence: 68%

Evolution of the Size Distribution of Gold Nanoparticles under Laser Irradiation

et al. 2021

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“…The cavitation bubble formed in the process is also useful for a variety of applications, especially as a precursor to laser-induced agglomeration of nanoparticles dispersed in liquid. In laser-induced agglomeration, the optical tweezing effect induced by subsequent laser pulses aggregates the suspended nanoparticles to form structures 17 . Depending on the particle properties, such as shape and composition, nanostructures in the liquid medium can be formed.…”

mentioning

confidence: 99%

“…Depending on the particle properties, such as shape and composition, nanostructures in the liquid medium can be formed. Laser-based agglomeration of nanoparticles has been shown using gold nanoparticles fabricated via laser ablation in liquids 17,18 . The aggregates formed via ablation and agglomeration can be used to enhance nonlinear optical phenomena 19 .…”

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confidence: 99%

Multi-pulse laser-induced bubble formation and nanoparticle aggregation using MoS2 nanoparticles

Lü

Sokolov

et al. 2020

Sci Rep

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Understanding of how particles and light interact in a liquid environment is vital for optical and biological applications. MoS2 has been shown to enhance nonlinear optical phenomena due to the presence of a direct excitonic resonance. Its use in biological applications is predicated on knowledge of how MoS2 interacts with ultrafast (< 1 ps) pulses. In this experiment, the interaction between two femtosecond pulses and MoS2 nanoparticles suspended in liquid is studied. We found that the laser pulses induce bubble formation on the surface of a nanoparticle and a nanoparticle aggregate then forms on the surface of the trapped bubble. The processes of formation of the bubble and the nanoparticle aggregation are intertwined.

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“…If the initial colloid contains larger nanoparticles (∼10 to 1000 nm in size), the separation of micro-particles into halves (fragments of approximately equal sizes) becomes important [22]. Agglomeration of nanoparticles was observed under laser irradiation of colloids with a high nanoparticles concentration [23] or when the particles had some additional charge. This charge was provided by an external electric field and/or the presence of β-active impurities, such as Tritium [24].…”

Section: Introductionmentioning

confidence: 99%

Laser-Assisted Formation of Elongated Au Nanoparticles and Subsequent Dynamics of Their Morphology under Pulsed Irradiation in Water

2018

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One-step laser generation of Au elongated nanoparticles (NPs) and their successive fragmentation and agglomeration are experimentally studied for the first time. In the present work, laser-assisted formation of Au elongated nanoparticles by ablation of a solid Au (99.99%) target in water was done using a ytterbium-doped fiber laser sources with pulse duration of 200 ns and pulse energy of 1mJ. Extinction spectrum correlating with TEM shows the appearance of absorption signal in red region and near IR-spectrum that corresponds to longitudinal plasmon resonance of electrons in elongated Au NPs. In addition, generated elongated Au nanoparticles were exposed to pulsed laser beam with various pulse energy and laser exposure time. It was found that at early stages of irradiation NPs agglomerate as the NPs chains with size of order of 1 µm long. Further laser exposure results in fragmentation of these chains. Possible processes of laser-assisted formation of elongated Au NPs in aqueous solutions of calcium chloride and their subsequent interaction with pulsed laser irradiation are discussed.

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Laser-induced agglomeration of gold nanoparticles dispersed in a liquid

Cited by 17 publications

References 20 publications

Evolution of the Size Distribution of Gold Nanoparticles under Laser Irradiation

Evolution of the Size Distribution of Gold Nanoparticles under Laser Irradiation

Multi-pulse laser-induced bubble formation and nanoparticle aggregation using MoS2 nanoparticles

Laser-Assisted Formation of Elongated Au Nanoparticles and Subsequent Dynamics of Their Morphology under Pulsed Irradiation in Water

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