title: Molding Inkjetted Silver on Nanostructured Surfaces for High-Throughput Structural Color Printing.
abstract: Inkjet printing of silver ink has been widely used to print conductive patterns in flexible electronic devices, and the printed patterns are commonly known to be colorless. We demonstrate that by printing a single type of ordinary silver nanoparticle ink on top of a substrate patterned with polymer nanostructures, the printed silver is molded by the nanostructures and gains robust structural colors. The colors are tunable by varying the geometries of nanostructures, and a broad range of visual colors can be achieved by mixing the red, green, and blue colors displayed from silver dots printed on different nanostructures. Such mechanism can enable full-color, scalable, high-throughput, versatile, and cost-effective printing of structural color images for regular publishing and displaying purposes. In experiments, we implemented a transparent polymer substrate patterned with diffractive nanostructure arrays to print full-color images. The printed images display color-shifting optically variable effects useful for security and authentication applications that demand customizable anticounterfeiting features.
authors.affiliation: School of Engineering Science, Simon Fraser University , Burnaby, British Columbia V5A1S6, Canada.
authors.forename: Hao
authors.initials: H
authors.lastname: Jiang
authors.affiliation: School of Engineering Science, Simon Fraser University , Burnaby, British Columbia V5A1S6, Canada.
authors.forename: Sheida
authors.initials: S
authors.lastname: Alan
authors.affiliation: School of Engineering Science, Simon Fraser University , Burnaby, British Columbia V5A1S6, Canada.
authors.forename: Haleh
authors.initials: H
authors.lastname: Shahbazbegian
authors.affiliation: School of Engineering Science, Simon Fraser University , Burnaby, British Columbia V5A1S6, Canada.
authors.forename: Jasbir N
authors.initials: JN
authors.lastname: Patel
authors.affiliation: School of Engineering Science, Simon Fraser University , Burnaby, British Columbia V5A1S6, Canada.
authors.forename: Bozena
authors.initials: B
authors.lastname: Kaminska
keywords: diffractive color; inkjet printing; nanostructure array; optically variable device; plasmonic color; silver nanoparticle; structural color