High-resolution large-scale plasmonic laser color printing for jewelry applications

We offer to use optical features of surface plasmon resonance in Ag nanoparticles for jewelry application as a method for the well-controlled decoration of silver items. The novel approach of silver nanoparticles formation with sizes from 5 to 50 nm via nanosecond direct laser writing allows for controlling the reflectance spectra, thus creating a color image on precious metals with a high resolution of about 450 dpi without dyes or hazardous chemicals. Moreover, the large-scale color image can be applied in single-step processing with significant productivity of 2 cm(2) - per minute. This work opens a strong direction for the practical application in the jewelry industry, art, and coining. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement