Laser ablation and fragmentation of Boron in liquids

Aiyyzhy, K. O.; Бармина, Е. В.; Voronov, V. V.; Shafeev, G. A.; Novikov, G. G.; Уваров, О. В.

doi:10.1016/j.optlastec.2022.108393

Cited by 12 publications

(12 citation statements)

References 16 publications

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“…It follows that the initial conditions for the development of breakdown plasma when irradiating colloids of nanoparticles of different sizes will differ; in particular, the laser radiation energy stored in the plasma will differ depending on the size of the nanoparticles in the irradiated colloid. Indeed, if we assume that the amount of laser radiation energy absorbed by a particle is proportional to the particle absorption cross-section, i.e., E∝d 2 , where d is the particle size, then, since E∝(λ D ) 2 , where λ D is the Debye radius, then d∝λ D , i.e., the size of the plasma flash will be directly proportional to the size of the nanoparticles in the colloidal solution.…”

Section: Effect Of Dysprosium Nanoparticle Concentrationsmentioning

confidence: 99%

“…Laser-induced breakdown of colloidal solutions of nanoparticles underlies the currently widespread methods of the synthesis and modification of nanoparticles using laser radiation, namely, methods of laser ablation and laser fragmentation in liquids [1][2][3][4][5]. These techniques are based on the physical and chemical processes observed during the optical breakdown of aqueous media, mainly the processes of the formation of plasma in a liquid [6,7] and its interaction with the liquid [8,9].…”

Section: Introductionmentioning

confidence: 99%

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Nanosecond-Laser-Induced Breakdown of Aqueous Colloidal Solutions of Dysprosium Nanoparticles: The Influence of Nanoparticle Concentration on the Breakdown Plasma and the Intensity of Physical and Chemical Processes

Baimler,

Baryshev,

Dikovskaya

et al. 2024

Physics

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This paper studies the dynamics of the development of laser breakdown plasma in aqueous colloids of dysprosium nanoparticles by analyzing the time patterns of plasma images obtained using a high-speed streak camera. In addition, the distribution of plasma flashes in space and their luminosity were studied, and the amplitude of acoustic signals and the rate of generation of new chemical products were studied depending on the concentration of dysprosium nanoparticles in the colloid. Laser breakdown was initiated by pulsed radiation from a nanosecond Nd:YAG laser. It is shown that the size of the plasma flash, the speed of motion of the plasma–liquid interface, and the lifetime of the plasma flash decrease with an increasing concentration of nanoparticles in the colloid. In this case, the time delay between the beginning of the laser pulse and the moment the plasma flash reaches its maximum intensity increases with increasing concentrations of nanoparticles. Varying the laser fluence in the range from 67 J/cm2 to 134 J/cm2 does not lead to noticeable changes in these parameters, due to the transition of the breakdown plasma to the critical regime. For dysprosium nanoparticles during laser breakdown of colloids, a decrease in the yield of hydrogen peroxide and an increase in the rate of formation of hydroxyl radicals per water molecule, characteristic of nanoparticles of rare earth metals, are observed, which may be due to the participation of nanoparticles and hydrogen peroxide in reactions similar to the Fenton and Haber–Weiss reactions.

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Section: Effect Of Dysprosium Nanoparticle Concentrationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nanosecond-Laser-Induced Breakdown of Aqueous Colloidal Solutions of Dysprosium Nanoparticles: The Influence of Nanoparticle Concentration on the Breakdown Plasma and the Intensity of Physical and Chemical Processes

Baimler,

Baryshev,

Dikovskaya

et al. 2024

Physics

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“…It should be noted that laser ablation and fragmentation of particles are generally accompanied by plasma formation, which leads to partial decomposition of isopropanol under its optical breakdown, as was determined in our previous work [56][57][58][59][60][61]. Further replacement of the carbon components in the clean environment (acetone) was carried out by centrifuging the colloid of corundum nanoparticles.…”

Section: Samplementioning

confidence: 99%

Ruby Nanoparticles for Greenhouse Farming: Synthesis, Features and Application

Paskhin,

Aiyyzhy,

Pobedonostsev

et al. 2023

J. Compos. Sci.

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In this work, we investigated the effect of photoconversion covers based on ruby (chromium-doped alumina (Al2O3:Cr3+)) particles (PCC-R) on the growth and development of lettuce (Lactuca sativa) plants. Ruby particles (from 100 nm to 2 μm) were obtained by the sequential application of spall laser ablation and further laser fragmentation. The content of chromium ions relative to aluminum ions in the nanoparticles was 3.3 × 10−3. The covers with different densities of applied ruby particles (2 × 107 m−2 (PCC-R7), 2 × 108 m−2 (PCC-R8), 2 × 109 m−2 (PCC-R9)) were studied in the present work. The PCC-Rs had two wide bands of luminescence excitation. The first one was from 350 nm to 450 nm with a maximum at 405 nm, and the second one was from 500 nm to 600 nm with a peak at 550 nm. Synthesized covers emitted in the range of 650 nm to 750 nm, with a peak at 695 nm. It has been shown that PCC-R8, in contrast to PCC-R7 and PCC-R9, provided an increase in yield by 40% and was characterized by increased water use efficiency during dark respiration and assimilation of carbon dioxide in plants. It is assumed that the observed positive effect of PCC-R8 photoconversion covers is associated with the activation of regulatory mechanisms due to a qualitative change in the light spectrum.

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“…[16] Nonetheless, nanoalloys remain poorly investigated compared to other nanosystems such as a single element or polymeric nanoparticles, core-shells, heterostructures, and liposomes. [1,3,17,18] Radiotherapy is a field where nanoalloys can enable unprecedented possibilities through the development of sensitizers for complementary radiation types. [4,19] This is even more advantageous if the nanoparticles are tailored for therapy guidance with well-established tomographic imaging techniques such as MRI, CT, or PET/SPECT.…”

Section: Introductionmentioning

confidence: 99%

“…[ 16 ] Nonetheless, nanoalloys remain poorly investigated compared to other nanosystems such as a single element or polymeric nanoparticles, core‐shells, heterostructures, and liposomes. [ 1,3,17,18 ]…”

Section: Introductionmentioning

confidence: 99%

A Laser Synthesis Route to Boron‐Doped Gold Nanoparticles Designed for X‐Ray Radiotherapy and Boron Neutron Capture Therapy Assisted by CT Imaging

Scaramuzza

Faria

Coviello

et al. 2023

Adv Funct Materials

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New multifunctional theranostic vectors allow the expansion of cancer therapeutic approaches toward scarcely investigated fields. One example is the combination of boron neutron capture therapy (BNCT) and X‐ray radiotherapy (XRT) for treating normal and XRT‐resistant hypoxic tumor regions and reduce recurrence. Of great relevance for BNCT is also the support of viable, rapid, safe, and reliable techniques for the localization and quantification of the radiosensitizers in the tissues. To address these challenges, polymer‐coated Au‐B nanoparticles (NPs) are obtained starting from a laser ablation in liquid process. Despite thermodynamic constraints, the two elements coexist by short‐range boron segregation in the gold lattice, as demonstrated experimentally and explained with the support of density functional theory calculations. Thus, the Au‐B NPs maintain a marked gold character such as biocompatibility, stability, and straightforward surface chemistry with thiolated compounds, desirable for the integration with agents capable of cell targeting and internalization. Overall, the Au‐B NPs exhibit the appropriate features for the investigation of combined BNCT and XRT, supported by the localization and quantification with X‐ray computed tomography imaging. Besides, the Au‐B nanotechnology tool is achievable without renouncing to reproducibility, environmental sustainability, and cost affordability thanks to the laser‐assisted synthetic pathway.

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Laser ablation and fragmentation of Boron in liquids

Cited by 12 publications

References 16 publications

Nanosecond-Laser-Induced Breakdown of Aqueous Colloidal Solutions of Dysprosium Nanoparticles: The Influence of Nanoparticle Concentration on the Breakdown Plasma and the Intensity of Physical and Chemical Processes

Nanosecond-Laser-Induced Breakdown of Aqueous Colloidal Solutions of Dysprosium Nanoparticles: The Influence of Nanoparticle Concentration on the Breakdown Plasma and the Intensity of Physical and Chemical Processes

Ruby Nanoparticles for Greenhouse Farming: Synthesis, Features and Application

A Laser Synthesis Route to Boron‐Doped Gold Nanoparticles Designed for X‐Ray Radiotherapy and Boron Neutron Capture Therapy Assisted by CT Imaging

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