Hafnium dioxide as a dielectric for highly-sensitive waveguide-coupled surface plasmon resonance sensors
Hafnium dioxide has been recognized as an excellent dielectric for microelectronics. However, its usefulness for the surface plasmon based sensors has not yet been tested. Here we investigate its usefulness for waveguide-coupled bi-metallic surface plasmon resonance sensors. Several Ag/HfO2/Au multi...
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doaj-11effe1b94f248fa9dc6bab89740fb152020-11-24T21:29:52ZengAIP Publishing LLCAIP Advances2158-32262016-04-0164045217045217-510.1063/1.4948454071604ADVHafnium dioxide as a dielectric for highly-sensitive waveguide-coupled surface plasmon resonance sensorsKunal Tiwari0Suresh C. Sharma1Nader Hozhabri2Department of Physics, University of Texas at Arlington, Arlington, Texas 76019, USADepartment of Physics, University of Texas at Arlington, Arlington, Texas 76019, USANanotechnology Research Center, Shimadzu Institute, University of Texas at Arlington, Arlington, Texas 76019, USAHafnium dioxide has been recognized as an excellent dielectric for microelectronics. However, its usefulness for the surface plasmon based sensors has not yet been tested. Here we investigate its usefulness for waveguide-coupled bi-metallic surface plasmon resonance sensors. Several Ag/HfO2/Au multilayer structure sensors were fabricated and evaluated by optical measurements and computer simulations. The resulting data establish correlations between the growth parameters and sensor performance. The sensor sensitivity to refractive index of analytes is determined to be S n = ∂ θ SPR ∂ n ≥ 4 7 0 . The sensitivity data are supported by simulations, which also predict 314 nm for the evanescent field decay length in air.http://dx.doi.org/10.1063/1.4948454 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Kunal Tiwari Suresh C. Sharma Nader Hozhabri |
spellingShingle |
Kunal Tiwari Suresh C. Sharma Nader Hozhabri Hafnium dioxide as a dielectric for highly-sensitive waveguide-coupled surface plasmon resonance sensors AIP Advances |
author_facet |
Kunal Tiwari Suresh C. Sharma Nader Hozhabri |
author_sort |
Kunal Tiwari |
title |
Hafnium dioxide as a dielectric for highly-sensitive waveguide-coupled surface plasmon resonance sensors |
title_short |
Hafnium dioxide as a dielectric for highly-sensitive waveguide-coupled surface plasmon resonance sensors |
title_full |
Hafnium dioxide as a dielectric for highly-sensitive waveguide-coupled surface plasmon resonance sensors |
title_fullStr |
Hafnium dioxide as a dielectric for highly-sensitive waveguide-coupled surface plasmon resonance sensors |
title_full_unstemmed |
Hafnium dioxide as a dielectric for highly-sensitive waveguide-coupled surface plasmon resonance sensors |
title_sort |
hafnium dioxide as a dielectric for highly-sensitive waveguide-coupled surface plasmon resonance sensors |
publisher |
AIP Publishing LLC |
series |
AIP Advances |
issn |
2158-3226 |
publishDate |
2016-04-01 |
description |
Hafnium dioxide has been recognized as an excellent dielectric for microelectronics. However, its usefulness for the surface plasmon based sensors has not yet been tested. Here we investigate its usefulness for waveguide-coupled bi-metallic surface plasmon resonance sensors. Several Ag/HfO2/Au multilayer structure sensors were fabricated and evaluated by optical measurements and computer simulations. The resulting data establish correlations between the growth parameters and sensor performance. The sensor sensitivity to refractive index of analytes is determined to be
S
n
=
∂
θ
SPR
∂
n
≥
4
7
0
. The sensitivity data are supported by simulations, which also predict 314 nm for the evanescent field decay length in air. |
url |
http://dx.doi.org/10.1063/1.4948454 |
work_keys_str_mv |
AT kunaltiwari hafniumdioxideasadielectricforhighlysensitivewaveguidecoupledsurfaceplasmonresonancesensors AT sureshcsharma hafniumdioxideasadielectricforhighlysensitivewaveguidecoupledsurfaceplasmonresonancesensors AT naderhozhabri hafniumdioxideasadielectricforhighlysensitivewaveguidecoupledsurfaceplasmonresonancesensors |
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