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Plasmonic Control and Stabilization of Asymmetric Light Scattering from Ag Nanocubes on TiO2

Authors :
Kenji Setoura
Hiroshi Miyasaka
Koichiro Saito
Yoshitaka Mitsuda
Syoji Ito
Tetsu Tatsuma
Source :
ACS Applied Materials & Interfaces. 9:11064-11072
Publication Year :
2017
Publisher :
American Chemical Society (ACS), 2017.

Abstract

When plasmonic nanoparticles are placed on a highly refractive semiconductor substrate, we can expect three different effects: (i) resonance mode splitting, (ii) asymmetric light scattering based on the split modes, and (iii) site-selective nanoetching due to plasmon-induced charge separation (PICS) at the nanoparticle–semiconductor interface. Here, we develop novel photofunctional materials by taking advantage of those three effects. More specifically, we control the asymmetric scattering of Ag nanocubes on TiO2 by PICS, so as to develop materials for photodrawing of one-way visible translucent images and multicolor scattering images. The one-way visible translucent images, which are translucent scattering images visible only from the back side, are drawn by anaerobic bottom-selective etching of the Ag nanocubes. For drawing the multicolor scattering images, a scattering color of Ag nanocubes is changed from yellow to green by the anaerobic bottom-selective etching and from yellow to red by aerobic nonse...

Details

ISSN :
19448252 and 19448244
Volume :
9
Database :
OpenAIRE
Journal :
ACS Applied Materials & Interfaces
Accession number :
edsair.doi...........0d26b0d1477a53ed80f8b77bfcd92778
Full Text :
https://doi.org/10.1021/acsami.7b01457