Effect of the high-voltage electrode polarity and wire preheating on the energy characteristics of electric explosion of fine tungsten wires in vacuum

Russkikh, A. G.; Baksht, R. B.; Labetskii, A. Yu.; Levashov, P. R.; Ткаченко, С. И.; Khishchenko, K. V.; Shishlov, A. V.; Fedyunin, A. V.; Chaikovskii, S. A.

doi:10.1134/s1063780x06100035

Cited by 8 publications

(4 citation statements)

References 14 publications

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“…Atomized metallic, micrometer‐sized copper particles (Cu micro) were supplied by Outokumpu Copper, Västerås, Sweden. Metallic nanosized particles (Cu nano) were produced by means of a WEE technique in collaboration with the High Voltage Research Institute, Tomsk Polytechnic University, Russia 42, 43. For comparison, commercially available micro‐ and nanosized particles of CuO were bought from Sigma–Aldrich.…”

Section: Methodsmentioning

confidence: 99%

Surface Characteristics, Copper Release, and Toxicity of Nano‐ and Micrometer‐Sized Copper and Copper(II) Oxide Particles: A Cross‐Disciplinary Study

Midander¹,

Cronholm²,

Karlsson³

et al. 2009

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An interdisciplinary and multianalytical research effort is undertaken to assess the toxic aspects of thoroughly characterized nano- and micrometer-sized particles of oxidized metallic copper and copper(II) oxide in contact with cultivated lung cells, as well as copper release in relevant media. All particles, except micrometer-sized Cu, release more copper in serum-containing cell medium (supplemented Dulbecco's minimal essential medium) compared to identical exposures in phosphate-buffered saline. Sonication of particles for dispersion prior to exposure has a large effect on the initial copper release from Cu nanoparticles. A clear size-dependent effect is observed from both a copper release and a toxicity perspective. In agreement with greater released amounts of copper per quantity of particles from the nanometer-sized particles compared to the micrometer-sized particles, the nanometer particles cause a higher degree of DNA damage (single-strand breaks) and cause a significantly higher percentage of cell death compared to cytotoxicity induced by micrometer-sized particles. Cytotoxic effects related to the released copper fraction are found to be significantly lower than the effects related to particles. No DNA damage is induced by the released copper fraction.

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Section: Methodsmentioning

confidence: 99%

Surface Characteristics, Copper Release, and Toxicity of Nano‐ and Micrometer‐Sized Copper and Copper(II) Oxide Particles: A Cross‐Disciplinary Study

Midander¹,

Cronholm²,

Karlsson³

et al. 2009

Small

378

260

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“…Nanoparticles of metallic Cu, with a mean particle surface area of 6.7 m 2 g -1 and primary particle size of approximately 100 nm in diameter were produced using a wire electro-explosive (WEE) technique in collaboration with the High Voltage Research Institute, Tomsk Polytechnic University, Russia (Russkikh et al 2006). Detailed particle characteristics are reported by Midander et al (2009), where particle size and specific surface area were estimated by means of field-emission-gun scanning electron microscopy (FEG-SEM) and determined by using Brunauer-Emmett-Teller (BET) analysis, respectively.…”

Section: Particle Characteristicsmentioning

confidence: 99%

Effect of sonication and serum proteins on copper release from copper nanoparticles and the toxicity towards lung epithelial cells

et al. 2010

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Different methodological settings can influence particle characteristics and toxicity in nanotoxicology. The aim of this study was to investigate how serum proteins and sonication of Cu nanoparticle suspensions influence the properties of the nanoparticles and toxicological responses on human lung epithelial cells. This was investigated by using methods for particle characterization (photon correlation spectroscopy and TEM) and Cu release (atomic absorption spectroscopy) in combination with assays for analyzing cell toxicity (MTT-, trypan blue- and Comet assay). The results showed that sonication of Cu nanoparticles caused decreased cell viability and increased Cu release compared to non-sonicated particles. Furthermore, serum in the cell medium resulted in less particle agglomeration and increased Cu release compared with medium without serum, but no clear difference in toxicity was detected. Few cells showed intracellular Cu nanoparticles due to fast release/dissolution processes of Cu. In conclusion; sonication can affect the toxicity of nanoparticles.

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“…As a result, the current is shunted by the corona plasma and Joule heating of the wire core stops. This 'natural barrier' of energy deposition in vacuum can be overcome, to a certain extent, by increasing the rate of current rise (di/dt) [35], forming a positive surface electric field [29], or preheating the wire [36,37], etc. For EWEs in higher density mediums such as atmospheric air, liquids (e.g.…”

Section: Introductionmentioning

confidence: 99%

Electrical wire explosion as a source of underwater shock waves

Shi¹,

Yin²,

Li³

et al. 2021

J. Phys. D: Appl. Phys.

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The underwater electrical wire explosion (UEWE) is an appealing source of underwater shock waves (SWs) with a high conversion efficiency from electrical energy to mechanical energy, good repeatability and controllability. Industrial applications are already seen in oil-well unblocking and stratum stimulation, and research is currently underway to apply UEWEs in electro-hydraulic forming, exploitation of unconventional gas and oil resources, etc. The emerging new applications call for a review on UEWE research from the perspective of an efficient SW source. This review paper considers the physical processes and numerical simulation methods, electrical and SW characteristics, and current and potential applications, and provides suggestions for future research directions. The code (XJ_UEWE01) developed by the authors to solve a coupling model of UEWE is included. The paper will provide students and researchers new to this field with an explanation of basic concepts of UEWE and a detailed overview of previous studies, and will aid research on UEWE applications, especially device development and parameter optimization.

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Effect of the high-voltage electrode polarity and wire preheating on the energy characteristics of electric explosion of fine tungsten wires in vacuum

Cited by 8 publications

References 14 publications

Surface Characteristics, Copper Release, and Toxicity of Nano‐ and Micrometer‐Sized Copper and Copper(II) Oxide Particles: A Cross‐Disciplinary Study

Surface Characteristics, Copper Release, and Toxicity of Nano‐ and Micrometer‐Sized Copper and Copper(II) Oxide Particles: A Cross‐Disciplinary Study

Effect of sonication and serum proteins on copper release from copper nanoparticles and the toxicity towards lung epithelial cells

Electrical wire explosion as a source of underwater shock waves

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