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Type: Conference paper
Title: Optical sensing by polystyrene microspheres
Author: Miri, N.
Mohammadzaheri, M.
Chen, L.
Citation: 2013 IEEE/ASME International Conference on Advanced Intelligent Mechatronics: Mechatronics for Human Wellbeing;. pp.1681-1685
Publisher: IEEE
Publisher Place: USA
Issue Date: 2013
Series/Report no.: IEEE ASME International Conference on Advanced Intelligent Mechatronics
ISBN: 9781467353199
ISSN: 2159-6255
Conference Name: IEEE/ASME International Conference on Advanced Intelligent Mechatronics (2013 : Wollongong, Australia)
Statement of
Narges Miri, Morteza Mohammadzaheri, Lei Chen
Abstract: Trapped light inside the microsphere can make resonance, if the original and returned light happens to be in phase after a few round trips. If the Refractive Index (RI) of the surrounding medium increases, the resonance peaks, known as Whispering Gallery Modes (WGMs), are red-shifted. In this work, the minimum detection limit (DL) of polystyrene microspheres, 10 μm & 25 μm in diameter, is measured while gain medium is embedded Quantum Dots (QDs) on the microspheres surface. For the smaller microsphere, the sensitivity of TE and TM modes are measured individually. Comparing results with available literatures shows a slight improvement of the microspheres' DL when coating with QDs rather than doping with dyes. Furthermore, the smaller microsphere shows to generate higher sensitivity and lower DL.
Rights: ©2013 IEEE
DOI: 10.1109/AIM.2013.6584338
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Appears in Collections:Aurora harvest 4
Mechanical Engineering conference papers

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