A Fiber-Tip Label-Free Biological Sensing Platform: A Practical Approach toward In-Vivo Sensing

The platform presented here was devised to address the unmet need for real time label-free in vivo sensing by bringing together a refractive index transduction mechanism based on Whispering Gallery Modes (WGM) in dye doped microspheres and Microstructured Optical Fibers. In addition to providing rem...

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Main Authors: Alexandre François, Tess Reynolds, Tanya M. Monro
Format: Article
Language:English
Published: MDPI AG 2015-01-01
Series:Sensors
Subjects:
Online Access:http://www.mdpi.com/1424-8220/15/1/1168
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author Alexandre François
Tess Reynolds
Tanya M. Monro
author_facet Alexandre François
Tess Reynolds
Tanya M. Monro
author_sort Alexandre François
collection DOAJ
description The platform presented here was devised to address the unmet need for real time label-free in vivo sensing by bringing together a refractive index transduction mechanism based on Whispering Gallery Modes (WGM) in dye doped microspheres and Microstructured Optical Fibers. In addition to providing remote excitation and collection of the WGM signal, the fiber provides significant practical advantages such as an easy manipulation of the microresonator and the use of this sensor in a dip sensing architecture, alleviating the need for a complex microfluidic interface. Here, we present the first demonstration of the use of this approach for biological sensing and evaluate its limitation in a sensing configuration deprived of liquid flow which is most likely to occur in an in vivo setting. We also demonstrate the ability of this sensing platform to be operated above its lasing threshold, enabling enhanced device performance.
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spelling doaj.art-e991e7cfe0b44d3e8896528c9f8669b72022-12-22T04:00:44ZengMDPI AGSensors1424-82202015-01-011511168118110.3390/s150101168s150101168A Fiber-Tip Label-Free Biological Sensing Platform: A Practical Approach toward In-Vivo SensingAlexandre François0Tess Reynolds1Tanya M. Monro2The Institute for Photonics and Advanced Sensing (IPAS) and ARC Centre of Excellence for Nanoscale Biophotonics (CNBP), the University of Adelaide, Adelaide SA 5005, AustraliaThe Institute for Photonics and Advanced Sensing (IPAS) and ARC Centre of Excellence for Nanoscale Biophotonics (CNBP), the University of Adelaide, Adelaide SA 5005, AustraliaThe Institute for Photonics and Advanced Sensing (IPAS) and ARC Centre of Excellence for Nanoscale Biophotonics (CNBP), the University of Adelaide, Adelaide SA 5005, AustraliaThe platform presented here was devised to address the unmet need for real time label-free in vivo sensing by bringing together a refractive index transduction mechanism based on Whispering Gallery Modes (WGM) in dye doped microspheres and Microstructured Optical Fibers. In addition to providing remote excitation and collection of the WGM signal, the fiber provides significant practical advantages such as an easy manipulation of the microresonator and the use of this sensor in a dip sensing architecture, alleviating the need for a complex microfluidic interface. Here, we present the first demonstration of the use of this approach for biological sensing and evaluate its limitation in a sensing configuration deprived of liquid flow which is most likely to occur in an in vivo setting. We also demonstrate the ability of this sensing platform to be operated above its lasing threshold, enabling enhanced device performance.http://www.mdpi.com/1424-8220/15/1/1168fiber optics sensorsbiological sensorsmicrocavitieslaser resonators
spellingShingle Alexandre François
Tess Reynolds
Tanya M. Monro
A Fiber-Tip Label-Free Biological Sensing Platform: A Practical Approach toward In-Vivo Sensing
Sensors
fiber optics sensors
biological sensors
microcavities
laser resonators
title A Fiber-Tip Label-Free Biological Sensing Platform: A Practical Approach toward In-Vivo Sensing
title_full A Fiber-Tip Label-Free Biological Sensing Platform: A Practical Approach toward In-Vivo Sensing
title_fullStr A Fiber-Tip Label-Free Biological Sensing Platform: A Practical Approach toward In-Vivo Sensing
title_full_unstemmed A Fiber-Tip Label-Free Biological Sensing Platform: A Practical Approach toward In-Vivo Sensing
title_short A Fiber-Tip Label-Free Biological Sensing Platform: A Practical Approach toward In-Vivo Sensing
title_sort fiber tip label free biological sensing platform a practical approach toward in vivo sensing
topic fiber optics sensors
biological sensors
microcavities
laser resonators
url http://www.mdpi.com/1424-8220/15/1/1168
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