|
Abstract
|
|
|---|---|
| Nanostructures consisting of crossed surface relief gratings (CSRGs) support surface plasmon resonances (SPRs) that are compatible with biosensing applications [1], [2]. At normal incidence, surface plasmons are excited between a metal and a dielectric at a light wavelength ( ?SPR) given by ? SPR =n?[?{? m /(n 2 +? m )}], where n is the index of refraction of the dielectric, and ?m is the real part of the permittivity of the metal and ? is the grating pitch. When placed between crossed linear polarizers, CSRGs allow for plasmonic energy exchange between the two superimposed gratings that eliminate any incident polychromatic light, except for the narrow SPR bandwidth where polarization conversion occurs. The result is an effective transmission of the SPR signal with a high signal-to-noise ratio. The single pitch of CSRGs, however, limit their operation to a specific plasmonic resonance wavelength. Here, we present a plasmonic sensor based on variable-pitch CSRG that allows plasmonic resonances at different wavelength bandwidth depending on the illuminated region. | |
|
International
|
Si |
|
Congress
|
INTERNATIONAL CONFERENCE ON ELECTROMAGNETICS IN ADVANCED APPLICATIONS (ICEAA) |
|
|
960 |
|
Place
|
Granada, España |
|
Reviewers
|
Si |
|
ISBN/ISSN
|
9781728105642 |
|
|
10.1109/ICEAA.2019.8879148 |
|
Start Date
|
09/09/2019 |
|
End Date
|
13/09/2019 |
|
From page
|
515 |
|
To page
|
515 |
|
|
PROCEEDINGS OF THE 2019 INTERNATIONAL CONFERENCE ON ELECTROMAGNETICS IN ADVANCED APPLICATIONS (ICEAA) |