Laser-assisted synthesis of Ag-Cu alloy nanoparticles with tunable surface plasmon resonance frequency in presence of external electric field

The present study aimed to synthesize the colloidal Ag-Cu alloy nanoparticles (NPs) in the presence of an external electric field. Synthesis of Ag-Cu alloy NPs is important because of their unique properties for antibacterial and antimicrobial activities. Colloidal Ag and Cu NPs were produced individually with nanosecond pulsed laser ablation in distilled water and were mixed in equal volume. The mixed colloid was postirradiated in the presence of an external DC electric field. The obtained colloidal NPs were characterized using various diagnostic methods. The results of this study demonstrated the long-term stability and oxidation resistance of colloidal Ag-Cu alloy NPs compared to the Ag and Cu NPs. Also, the results of this study showed that the external electric field reduces the average size of alloy NPs, and tune the surface plasmon resonance frequency.

Automated summary

The present study aimed to synthesize colloidal Ag-Cu alloy nanoparticles with unique antibacterial and antimicrobial activities, and found that the external electric field can improve the stability and size of the alloy nanoparticles.