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Proceedings Paper

Plasmonic nanohole arrays on Si-Ge heterostructures: an approach for integrated biosensors
Author(s): L. Augel; I. A. Fischer; L. A. Dunbar; S. Bechler; A. Berrier; D. Etezadi; F. Hornung; K. Kostecki; C. I. Ozdemir; M. Soler; H. Altug; J. Schulze
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Paper Abstract

Nanohole array surface plasmon resonance (SPR) sensors offer a promising platform for high-throughput label-free biosensing. Integrating nanohole arrays with group-IV semiconductor photodetectors could enable low-cost and disposable biosensors compatible to Si-based complementary metal oxide semiconductor (CMOS) technology that can be combined with integrated circuitry for continuous monitoring of biosamples and fast sensor data processing. Such an integrated biosensor could be realized by structuring a nanohole array in the contact metal layer of a photodetector. We used Fouriertransform infrared spectroscopy to investigate nanohole arrays in a 100 nm Al film deposited on top of a vertical Si-Ge photodiode structure grown by molecular beam epitaxy (MBE). We find that the presence of a protein bilayer, constitute of protein AG and Immunoglobulin G (IgG), leads to a wavelength-dependent absorptance enhancement of ~ 8 %.

Paper Details

Date Published: 22 April 2016
PDF: 7 pages
Proc. SPIE 9724, Plasmonics in Biology and Medicine XIII, 97240M (22 April 2016); doi: 10.1117/12.2212650
Show Author Affiliations
L. Augel, Univ. of Stuttgart (Germany)
I. A. Fischer, Univ. of Stuttgart (Germany)
L. A. Dunbar, Ctr. Suisse d'Electronique et de Microtechnique SA (Switzerland)
S. Bechler, Univ. of Stuttgart (Germany)
A. Berrier, Univ. of Stuttgart (Germany)
D. Etezadi, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
F. Hornung, Univ. of Stuttgart (Germany)
K. Kostecki, Univ. of Stuttgart (Germany)
C. I. Ozdemir, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
M. Soler, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
H. Altug, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
J. Schulze, Univ. of Stuttgart (Germany)

Published in SPIE Proceedings Vol. 9724:
Plasmonics in Biology and Medicine XIII
Tuan Vo-Dinh; Joseph R. Lakowicz, Editor(s)

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