Open AccessColor generation through plasmonic coupled dissimilar nano‐metals using mask free deposition
Author(s) -
Cheng Ka Y.,
Ching Suet Y.,
Cheah Kok W.
Publication year - 2020
Publication title -
nano select
Language(s) - English
Resource type - Journals
ISSN - 2688-4011
DOI - 10.1002/nano.202000088
Subject(s) - plasmon , nano , coupling (piping) , materials science , metal , range (aeronautics) , atom (system on chip) , blueshift , optoelectronics , nanotechnology , photoluminescence , metallurgy , composite material , computer science , embedded system
The dissimilar nano‐metals were deposited mask free and their plasmonic coupling studied. Coupling between dissimilar nano‐metals can generate a larger red shift in plasmonic resonance when compare to (say) nano‐Ag/Ag coupling of various size. Tunable reflectant color was achieved through plasmonic coupling between nano‐Ag and another nano‐metal. The tunable range is from blue to red; covering the entire optical range. The tunability can be achieved through varying the nano‐metal size and/or through the plasmonic coupling between two dissimilar nano‐metals. The nano‐metals are randomly distributed and packed densely. Hence, the plasmonic coupling effect observed is a collective effect. The distribution of the nano‐particle size, and inter‐particle gap distance were determined. The experimental results show that coupling of nano‐Ag with lighter atom metal such as Mg generates smaller red shift, whereas larger atom metal such as Cr would give larger red shift. The result demonstrates that it is possible to produce reflected color across the optical range using single layer of nano‐metals.