期刊
ACS NANO
卷 12, 期 10, 页码 9913-9921出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.8b02868
关键词
silver nanoparticles; plasmonics; Fano resonance; photoreduction; color printing
类别
资金
- PolyU Strategic Development Special Project [1-ZVGB]
- NSFC/RGC [N_PolyU517/15]
A precision photoreduction technology for the ultrafast high-precision light-controlled growth of silver nanoparticles for printing plasmonic color images is presented. Ultraviolet (UV) patterns with about a million pixels are generated to temporally and spatially regulate the photoreduction of silver salts to precisely create around a million clusters of distinct silver nanoparticles on a titanium dioxide (TiO2)-capped quartz substrate. The silver nanoparticle-TiO2-quartz structure exhibits a Fano-like reflection spectrum, whose spectral dip can be tuned by the dimension of the silver nanoparticles for plasmonic color generation. This technology allows the one-step production of multiscale engineered large-area plasmonic substrates without the use of either nanostructured templates or additional nanofabrication processes and thus offers an approach to plasmonic engineering for a myriad of applications ranging from structural color decoration to plasmonic microdevices and biosensors.
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