Magneto-photonic crystal optical sensors with sensitive covers
Document Type
Article
Publication Date
8-29-2011
Abstract
We report on a magneto-photonic crystal on-chip optical sensor for specific analyte detection with polypyrrole and gold nano particles as modified photonic crystal waveguide cover layers. The reaction of the active sensor material with various analytes modifies the electronic structure of the sensor layer causing changes in its refractive index and a strong transduction signal. Magneto-photonic crystal enhanced polarization rotation sensitive to the nature of the cover layer detects the index modification upon analyte adsorption. A high degree of selectivity and sensitivity are observed for aqueous ammonia and methanol with polypyrrole and for thiolated-gold- with gold-nanoparticles covers. © 2011 American Institute of Physics.
Publication Title
Applied Physics Letters
Recommended Citation
Dissanayake, N.,
Levy, M.,
Chakravarty, A.,
Heiden, P.,
Chen, N.,
&
Fratello, V.
(2011).
Magneto-photonic crystal optical sensors with sensitive covers.
Applied Physics Letters,
99(9).
http://doi.org/10.1063/1.3633344
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/8920