Issue 38, 2017

Plasmonic sensor with high figure of merit based on differential polarization spectra of elliptical nanohole array

Abstract

Using the difference of the polarization transmission spectra of elliptical nanohole arrays (ENAs), the figure of merit (FOM) of the sensor performance of ENA can be significantly improved, and is inversely proportional to the measurement resolution. By optimizing the aspect ratio of the elliptical holes, Ag thickness, substrate-effect, and adhesive layer, the sensitivity, FOM, and relative sensitivity of the ENA can be improved to be 775 nm RIU−1, 705 RIU−1, and 70.23%, respectively, with an excellent linear dependence on the change of refractive index. Such a high-performance sensor also can be used in monitoring the molecule adsorption and RNA hybridization, revealing a highly localized near-field enhancement. This will benefit the sensing of surface-specific binding events in biologic detection and medical diagnosis.

Graphical abstract: Plasmonic sensor with high figure of merit based on differential polarization spectra of elliptical nanohole array

Supplementary files

Article information

Article type
Paper
Submitted
15 Aug 2017
Accepted
17 Sep 2017
First published
19 Sep 2017

Nanoscale, 2017,9, 14710-14721

Plasmonic sensor with high figure of merit based on differential polarization spectra of elliptical nanohole array

B. Ai, P. Basnet, S. Larson, W. Ingram and Y. Zhao, Nanoscale, 2017, 9, 14710 DOI: 10.1039/C7NR06067J

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements