La Trobe
207041_Langley,D_2018.pdf (1.83 MB)

Optical chemical barcoding based on polarization controlled plasmonic nanopixels

Download (1.83 MB)
journal contribution
posted on 2023-04-12, 00:10 authored by Daniel Langley, Eugeniu BalaurEugeniu Balaur, Y Hwang, Catherine Sadatnajafi, Brian AbbeyBrian Abbey
Plasmonic devices offer the possibility of passively detecting changes in local chemistry that opens up a wide range of applications from molecular sensing to monitoring water quality. Conventional plasmonics have previously shown great promise as nanoscale chemical sensors through detection of small variations in the local refractive index (RI). The motivation behind using plasmonics for these applications includes the fact that detection is entirely passive and the devices themselves can be readily miniaturized. Previously, a lack of any control over the output of these devices, has fundamentally limited their application to chemicals which produce clearly identifiable resonances within the range of detection. Here it is demonstrated that microfluidic devices, incorporating polarization-controlled plasmonic nanopixels, allow the device response to be tuned to the particular analyte of interest, anywhere within the visible spectrum. This dramatically increases the effective dynamic range and allows local variations in RI to be perceived directly as color changes by the human eye. Active control over the output of the device also enables clear differentiation between a number of different analytes, paving the way for plasmonics to be used for a wide range of real-world chemical sensing applications.

Funding

The authors acknowledge the support of the Australian Research Council Centre of Excellence in Advanced Molecular Imaging (CE140100011).

History

Publication Date

2018-01-24

Journal

Advanced Functional Materials

Volume

28

Issue

4

Article Number

1704842

Pagination

8p.

Publisher

Wiley

ISSN

1616-301X

Rights Statement

© 2017 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Usage metrics

    Journal Articles

    Categories

    No categories selected

    Licence

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC