Bowtie plasmonic nanoantenna arrays for polarimetric optical biosensing


We report on the first polarimetric plasmonic biosensor based on arrays of bowtie nanoantennas. Using the Finite Element Method (FEM) the phase retardation between the components of light polarized parallel and perpendicular to the axis of the nanoantennas is studied. After optimizing them for high volumetric sensitivity at a wavelength of 780 nm, sensitivities ~5 rad/RIU are obtained, corresponding to a detection limit ~10-7 RIU when using the polarimetric readout platform. Surface sensitivity values resulted from studies of phase retardation changes from a coverage of bioreceptors and analytes.

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Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
Additional Information: Copyright 2014 SPIE. One print or electronic copy may be made for personal use only. Systematic reproduction, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Uncontrolled Keywords: FEM simulations,gold bowties,LSPR,nanoantenna arrays,optical sensing and biosensing,phase retardation,polarimetry,surface plasmon polaritons,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials,Biomaterials,Radiology Nuclear Medicine and imaging
Publication ISSN: 1996-756X
Last Modified: 01 Feb 2024 08:08
Date Deposited: 15 Feb 2019 16:39
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Conference article
Published Date: 2014-03-05
Accepted Date: 2014-01-01
Authors: Calderón, Jonathan
Álvarez, Jesús
Martínez-Pastor, Juan
Hill, Daniel (ORCID Profile 0000-0003-3510-7783)



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