Cathode and Hollow Metal Anode with Miniature Argon Gas Flow

Zheng, Peichao; Liu, R.; Wang, J.; Luo, Yu; Zhao, Hongran; Mao, Xuefeng; Lai, Ch.

doi:10.1007/s10812-022-01336-2

Cited by 3 publications

(2 citation statements)

References 46 publications

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“…Kumar et al achieved the creation of graphene quantum dots enveloped in gold nanoparticles through DC microplasma [21]. Blue emissive CQDs have been successfully synthesized via plasma treatment using a range of carbon precursors, including citric acid, D-fructose, sodium dodecyl sulfate, chitosan, hydrocarbons, and folic acid [21][22][23][24][25]. Notably, CQD synthesis has proven successful in both acidic and basic reaction environments.…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Study on the Antibacterial Activities of Carbon Quantum Dots Derived from Orange Juice against Escherichia coli

Nguyen,

Le,

Pham

et al. 2024

Applied Sciences

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Carbon quantum dots (CQDs) are known for their intriguing optical properties, low toxicity, and high biocompatibility, which make them promising for biomedical applications. In this study, CQDs were synthesized by subjecting orange juice to microplasma as a carbon source at atmospheric pressure and low temperatures. The resulting CQDs exhibited a narrow size distribution, with an average diameter of approximately 4.5 nm and a pH value of 5.67. These CQDs exhibited strong blue emission characteristics. The antibacterial properties of the CQDs against Escherichia coli (E. coli) strains were evaluated using minimum inhibitory concentration assays. The study revealed that an effective inhibition of E. coli was achieved at a minimum inhibitory concentration of 0.1 ppm, while the minimum bactericidal concentration for this bacterial strain was 1 ppm, resulting in an average antibacterial efficacy of 57%. Notably, the antibacterial effects of the CQDs were observed without the need for additional light or oxidants, demonstrating the applicability of CQDs in combating bacterial strains.

show abstract

Section: Introductionmentioning

confidence: 99%

A Comprehensive Study on the Antibacterial Activities of Carbon Quantum Dots Derived from Orange Juice against Escherichia coli

Nguyen,

Le,

Pham

et al. 2024

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…Kumar et al achieved the creation of graphene quantum dots enveloped in gold nanoparticles through DC microplasma [18]. Blue emissive CQDs have been successfully synthesized via plasma treatment using a range of carbon precursors, including citric acid, D-fructose, sodium dodecyl sulfate, chitosan, hydrocarbons, and folic acid [18][19][20][21][22]. Notably, CQDs synthesis has proven successful in both acidic and basic reaction environments.…”

Section: Introductionmentioning

confidence: 99%

Antibacterial Potential of Carbon Quantum Dots against Escherichia coli Bacteria Strains

Pham,

Le,

Pham

et al. 2023

Preprint

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Carbon quantum dots (CQDs) with exciting optical properties, low toxicity, and high biocompatibility which are suitable for research in biomedical applications. In this work, the CQDs were prepared through microplasma treatment of orange juice as a carbon source, employing atmospheric pressure and low temperatures. The resulting CQDs exhibited a narrow size distribution, with an average diameter of approximately 4.5 nm. These CQDs displayed strong blue emission characteristics. We evaluated the antibacterial properties of these CQDs against Escherichia coli (E. coli) bacteria strains, using minimum inhibitory concentration assays. Our findings revealed that the minimum inhibitory concentration required for effective inhibition of E. coli was 0.1 ppm, while the minimum bactericidal concentration for this kind of bacteria was 1 ppm with an average antibacterial efficacy of 57%. The antibacterial processes of CQDs could occur without additional light or oxidant.

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Material removal model for describing the plasma discharge effect in magnetic-electrolytic plasma polishing

Xiang,

Sun,

Yang

et al. 2024

Int J Adv Manuf Technol

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Considering that the regulating physical mechanism of the magnetic field on electrolytic plasma is insufficient, this study introduces a plasma discharge model to demonstrate its effect on material removal in magnetic-electrolytic plasma polishing. Firstly, we establish a mathematical model to describe plasma discharge induced by electron collision. The Boltzmann kinematic equations are employed to elucidate the physical dynamics of electrons and their momentum distribution function during ionization collisions. Secondly, we derive the surface material removal equation based on the instantaneous high-temperature melting of plasma discharge and establish the corresponding boundary conditions for simulation calculations. Subsequently, we conduct electromagnetic plasma polishing experiments under varying magnetic field intensities using TA1 titanium alloy as the test material. Our simulation results demonstrate that the magnetic field enhances the spatial electric field formed by the uneven distribution of ion electrons, expediting the plasma discharge process towards the anode and generating interference currents to counterbalance the required material removal current. Experimental data is provided to validate the model, consistently revealing a positive correlation between circuit current and material removal rate. The research demonstrates the rationality and reliability of the material removal model for plasma discharge, offering a fundamental understanding of electromagnetic plasma polishing.

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Cathode and Hollow Metal Anode with Miniature Argon Gas Flow

Cited by 3 publications

References 46 publications

A Comprehensive Study on the Antibacterial Activities of Carbon Quantum Dots Derived from Orange Juice against Escherichia coli

A Comprehensive Study on the Antibacterial Activities of Carbon Quantum Dots Derived from Orange Juice against Escherichia coli

Antibacterial Potential of Carbon Quantum Dots against Escherichia coli Bacteria Strains

Material removal model for describing the plasma discharge effect in magnetic-electrolytic plasma polishing

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