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Proceedings Paper

Microspherical resonators for biophotonic sensors
Author(s): M. Brenci; R. Calzolai; F. Cosi; G. Nunzi Conti; S. Pelli; G. C. Righini
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Paper Abstract

Nowadays biological sensing is representing a very active area of research due to the many possible applications in environmental control, food testing, pharmaceutical screening, and genetic analysis. A particular need exists for miniature biosensors for the detection of proteins, DNA, toxins and, more generally, infectious agents. Several optical techniques have proven to be quite effective, and biophotonics is a continuously growing discipline. Here we provide a quick overview of the recent progresses in the development of optical biosensors based on resonant cavities constituted by dielectric microspheres, where light propagation occurs through whispering-gallery modes (WGMs). The effect of any perturbation to the optical resonance structure of a microsphere is such that a very high sensitivity can be achieved.

Paper Details

Date Published: 20 April 2006
PDF: 9 pages
Proc. SPIE 6158, Lightmetry and Light and Optics in Biomedicine 2004, 61580S (20 April 2006); doi: 10.1117/12.675800
Show Author Affiliations
M. Brenci, N. Carrara Institute of Applied Physics, IFAC-CNR (Italy)
R. Calzolai, N. Carrara Institute of Applied Physics, IFAC-CNR (Italy)
F. Cosi, N. Carrara Institute of Applied Physics, IFAC-CNR (Italy)
G. Nunzi Conti, N. Carrara Institute of Applied Physics, IFAC-CNR (Italy)
S. Pelli, N. Carrara Institute of Applied Physics, IFAC-CNR (Italy)
G. C. Righini, N. Carrara Institute of Applied Physics, IFAC-CNR (Italy)


Published in SPIE Proceedings Vol. 6158:
Lightmetry and Light and Optics in Biomedicine 2004
Katarzyna Kolacz; Jacek Sochacki, Editor(s)

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