Theory of multiple scattering enhanced single particle plasmonic sensing
File(s)
Accepted version
Author(s)
Berk, Joel
Foreman, Matthew R
Type
Journal Article
Abstract
Methods to increase the light scattered from small particles can help improve the sensitivity of many sensing techniques. Here, we investigate the role multiple scattering plays in perturbing the scattered signal when a particle is added to a random scattering environment. Three enhancement factors, parametrizing the effect of different classes of multiple scattering trajectories on the field perturbation, are introduced and their mean amplitudes explored numerically in the context of surface plasmon polariton scattering. We demonstrate that there exists an optimum scatterer density at which the sensitivity enhancement is maximized, with factors on the order of 102 achievable. Dependence of the enhancement factors on scatterer properties are also studied.
Date Issued
2021-07-19
Date Acceptance
2021-07-14
Citation
ACS Photonics, 2021, 8 (8), pp.2227-2233
ISSN
2330-4022
Publisher
American Chemical Society
Start Page
2227
End Page
2233
Journal / Book Title
ACS Photonics
Volume
8
Issue
8
Copyright Statement
© 2021 American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Photonics, after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsphotonics.1c00725
Sponsor
The Royal Society
Royal Society
Engineering and Physical Sciences Research Council
Identifier
http://arxiv.org/abs/2105.02798v2
Grant Number
UF150335
University Research Fellowship
1992728
Subjects
physics.optics
physics.optics
cond-mat.dis-nn
cond-mat.mes-hall
Publication Status
Published
Date Publish Online
2021-07-19