Journal
NANOSCALE
Volume 5, Issue 14, Pages 6243-6248Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3nr01419c
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Funding
- A*STAR [0921540099]
- NEU [XNB201302]
- Natural Science Foundation of Hebei Province [A2013501049]
- Singapore Ministry of Education [MOE2009-T2-1-086]
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We demonstrate reflection-mode plasmonic color filters based on lithographically patterned silver nanorods with ultrasmall inter-rod gaps. Fine and effective tuning of the plasmon resonance is shown by varying array periodicities. We determine the dependence of reflected intensity on diameter/periodicity ratio and then develop reflective plasmonic color filters using dense nanorod arrays. Experimental results agree well with theoretical calculations. Our approach is potentially useful for plasmon-assisted sensing, imaging and displays.
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