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Designing Polymeric Nanorod Arrays for Optical Waveguide‐based Biosensors by Antonis Gitsas; Thomas D. Lazzara; Basit Yameen; Martin Steinhart; Wolfgang Knoll; Hatice Duran is a Engineering article available to read on EtoBox.

What is Designing Polymeric Nanorod Arrays for Optical Waveguide‐based Biosensors about?

## Abstract The optical waveguiding capabilities of polycyanurate thermoset nanorod (PCNs) arrays mounted on planar gold substrates were investigated using optical waveguide spectroscopy (OWS). The nanorods, with diameter of 60 and 150 nm, and length of 650 nm, are formed by thermal polymerization of cyanate ester oligomers within porous anodic aluminium oxide templates. We discuss the waveguiding properties of the PCNs arrays when the nanorod diameter is much smaller (<1/10) than the wavelength of the guided light. We monitored the changes in the waveguiding modes by exchanging the interrod filling environment with water, ethanol, and isopropanol. This study led to a sensing figure of merit as high as 196 reciprocal refractive index units, which is higher than that of other previously studied sensors based on angular modulation. Furthermore, numerical simulations were performed by applying an Effective Medium Theory (EMT) based on the Maxwell‐Garnett approximation for the prediction of the optical properties of anisotropic nanorod arrays. Simulations based on Fresnel equations were used for estimating the optimal fabrication geometry, with varying the nanorod diameter and the inte

Who reads Designing Polymeric Nanorod Arrays for Optical Waveguide‐based Biosensors?

Author

Antonis Gitsas; Thomas D. Lazzara; Basit Yameen; Martin Steinhart; Wolfgang Knoll; Hatice Duran

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); Wiley - V C H Verlag GmbbH & Co.; Wiley (ISSN 1862-6351)

Published

2011

Language

EN

Field

Engineering (Physical Sciences)