The European Physical Journal Special Topics

, Volume 223, Issue 10, pp 2041–2055 | Cite as

Development of a fully automated in-vitro diagnostics system based on low-Q whispering gallery modes in fluorescent microparticles

Regular Article WGM Combined with Fluorescence
Part of the following topical collections:
  1. Taking Detection to the Limit: Biosensing with Optical Microcavities

Abstract

During the past decade, whispering gallery modes (WGMs) have been proven to enable highly sensitive microscopic optical sensors capable of in-vitro label-free bio-detection under physiological conditions. While the basic aspects of this quite novel and promising approach have been explored, it still lacks implementation at a level that would effectively rival well-established state-of-the-art biosensor systems, such as Surface Plasmon Resonance sensors and Quartz Crystal Microbalance.

In this work, we present a fully automated in-vitro diagnostics system based on low-Q whispering gallery modes designed to accept this challenge. Starting from the principles of low-Q WGM sensing, various aspects and intricacies of implementing a fully fletched in-vitro diagnostics system are discussed with special foci on WGM analysis and numerical evaluation, sensor conditioning, fluid handling, and control of the overall device. First results of the performance of the system are presented and interpreted in view of the method’s potential.

Keywords

European Physical Journal Special Topic Quartz Crystal Microbalance Mode Position Mode Shift Free Spectral Range 

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Copyright information

© EDP Sciences and Springer 2014

Authors and Affiliations

  • R. Bischler
    • 1
    • 2
  • M. Olszyna
    • 2
  • M. Himmelhaus
    • 1
  • L. Dähne
    • 2
  1. 1.NanoBioAnalytics — Dr. Michael HimmelhausBerlinGermany
  2. 2.Surflay Nanotec GmbHBerlinGermany

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