Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/78358
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Type: | Journal article |
Title: | Fluorescent polymer coated capillaries as optofluidic refractometric sensors |
Author: | Rowland, K. François, A. Hoffmann, P. Monro, T. |
Citation: | Optics Express, 2013; 21(9):11492-11505 |
Publisher: | Optical Soc Amer |
Issue Date: | 2013 |
ISSN: | 1094-4087 1094-4087 |
Statement of Responsibility: | Kristopher J. Rowland, Alexandre François, Peter Hoffmann, and Tanya M. Monro |
Abstract: | A capillary microresonator platform for refractometric sensing is demonstrated by coating the interior of thick-walled silica capillaries with a sub-wavelength layer of high refractive index, dye-doped polymer. No intermediate processing, such as etching or tapering, of the capillary is required. Side illumination and detection of the polymer layer reveals a fluorescence spectrum that is periodically modulated by whispering gallery mode resonances within the layer. Using a Fourier technique to calculate the spectral resonance shifts, the fabricated capillary resonators exhibited refractometric sensitivities up to approximately 30 nm/RIU upon flowing aqueous glucose through them. These sensors could be readily integrated with existing biological and chemical separation platforms such as capillary electrophoresis and gas chromatography where such thick walled capillaries are routinely used with polymer coatings. A review of the modelling required to calculate whispering gallery eigenmodes of such inverted cylindrical resonators is also presented. |
Keywords: | Polymers Spectrometry, Fluorescence Refractometry Equipment Design Equipment Failure Analysis Microfluidics Transducers Micro-Electrical-Mechanical Systems Capillary Action |
Rights: | © 2013 OSA |
DOI: | 10.1364/OE.21.011492 |
Grant ID: | http://purl.org/au-research/grants/arc/FS100100039 |
Published version: | http://dx.doi.org/10.1364/oe.21.011492 |
Appears in Collections: | Aurora harvest IPAS publications |
Files in This Item:
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hdl_78358.pdf | Published version | 1.58 MB | Adobe PDF | View/Open |
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