Three different laser wavelengths are used to produce colloidal solutions of silver nanoparticles in water: 1064, 532 and 355 nm. The different wavelengths were used to examine the laser wavelength influence on the particle size. With the use of an electron microscope, we were able to identify particles. In the presence of a high fluence of 25 J/cm², the mean particle diameter decreased from 27 to 8 nm as the laser wavelength decreased. It was described in terms of colloidal particle fragmentation caused by laser pulse self-absorption. There is a quantitative discrepancy between the size of a particle and ablation efficiency, as well as the absorption intensity, for self-absorption of colloids. Silver nanoparticles with a diameter of 8 nanometers have been shown to kill both Escherichia coli (E. coli) and Staphylococcus germs.

laser ablation, silver nanoparticles, laser wavelength, particle size antibacterial activity.

Received: October 16, 2021; Accepted: November 11, 2021; Published: December 8, 2021

How to cite this article: Ruaa A. Mohammed, Ghada Mohammed Saleh and Falah A.-H. Mutlak, Influence of laser ablation wave lengths 355, 532 and 1064 nm on the structural properties of silver nanoparticle size with biological application, JP Journal of Heat and Mass Transfer 24(2) (2021), 333-346.

This Open Access Article is Licensed under Creative Commons Attribution 4.0 International License

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