Optical sensing by polystyrene microspheres

Narges Miri, Morteza Mohammadzaheri, Lei Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

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.

Original languageEnglish
Title of host publication2013 IEEE/ASME International Conference on Advanced Intelligent Mechatronics
Subtitle of host publicationMechatronics for Human Wellbeing, AIM 2013
Pages1681-1685
Number of pages5
DOIs
Publication statusPublished - 2013
Event2013 IEEE/ASME International Conference on Advanced Intelligent Mechatronics: Mechatronics for Human Wellbeing, AIM 2013 - Wollongong, NSW, Australia
Duration: Jul 9 2013Jul 12 2013

Other

Other2013 IEEE/ASME International Conference on Advanced Intelligent Mechatronics: Mechatronics for Human Wellbeing, AIM 2013
CountryAustralia
CityWollongong, NSW
Period7/9/137/12/13

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ASJC Scopus subject areas

  • Artificial Intelligence
  • Electrical and Electronic Engineering
  • Mechanical Engineering

Cite this

Miri, N., Mohammadzaheri, M., & Chen, L. (2013). Optical sensing by polystyrene microspheres. In 2013 IEEE/ASME International Conference on Advanced Intelligent Mechatronics: Mechatronics for Human Wellbeing, AIM 2013 (pp. 1681-1685). [6584338] https://doi.org/10.1109/AIM.2013.6584338