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The impact of photoactivation on the antibacterial effect of nanoparticles obtained by pulsed laser ablation
Author(s): D. A. Goncharova; A. L. Nemoykina; V. O. Trufanov; S. A. Kulinich; V. A. Svetlichnyi
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Paper Abstract

This paper studies the influence of photoactivation on the antibacterial activity of nanoparticles (NPs) obtained by pulsed laser ablation (PLA) of a brass target. The initial composition of the target is presented by a cubic phase is Cu65Zn35/Cu50Zn50. PLA in water was found to produce Cu2O and ZnO NPs. Generation of a different phase of brass (Cu85Zn15) was also observed. A number of studies was conducted to test the antibacterial properties of cotton treated with colloidal solution. Strain of S.aureus bacteria was used to evaluate antibacterial activity of prepared NPs, and it turned out to be high enough; an additional exposure of red light (610 nm) did not induce any changes in the antibacterial activity of the samples. Irradiation of the "soft" ultraviolet (365 nm) led to a sharp spike of the antibacterial activity an d complete death of bacteria.

Paper Details

Date Published: 11 December 2019
PDF: 6 pages
Proc. SPIE 11322, XIV International Conference on Pulsed Lasers and Laser Applications, 113222N (11 December 2019); doi: 10.1117/12.2545864
Show Author Affiliations
D. A. Goncharova, National Research Tomsk State Univ. (Russian Federation)
A. L. Nemoykina, National Research Tomsk State Univ. (Russian Federation)
V. O. Trufanov, National Research Tomsk State Univ. (Russian Federation)
S. A. Kulinich, Tokai Univ. (Japan)
V. A. Svetlichnyi, National Research Tomsk State Univ. (Russian Federation)


Published in SPIE Proceedings Vol. 11322:
XIV International Conference on Pulsed Lasers and Laser Applications
Victor F. Tarasenko; Anton V. Klimkin; Maxim V. Trigub, Editor(s)

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