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Issue 30, 2015
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Improving the sensing performance of double gold gratings by oblique incident light

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Abstract

Here we demonstrate a simple method to improve the plasmonic sensing performance of gold gratings. The gratings consist of periodic polymer gratings covered with a gold layer, created by nanoimprint lithography and metal deposition. We investigated the effect of gold thickness and the incident angles on the plasmonic sensing performance. With the optimized gold layer, the full-width at half maximum of this grating was reduced by 60% by using the oblique incident light instead of the normal incident light. A maximum value of the figure of merit at oblique incidence is 12, which is double the one at normal incidence.

Graphical abstract: Improving the sensing performance of double gold gratings by oblique incident light

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Supplementary files

Article information


Submitted
24 Apr 2015
Accepted
19 Jun 2015
First published
24 Jun 2015

Nanoscale, 2015,7, 13026-13032
Article type
Paper
Author version available

Improving the sensing performance of double gold gratings by oblique incident light

F. Wu, L. Liu, L. Feng, D. Xu and N. Lu, Nanoscale, 2015, 7, 13026
DOI: 10.1039/C5NR02660A

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