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Functionalized Photonic Crystal Sensor Elements based on Nanoporous Polymers

Published online by Cambridge University Press:  01 February 2011

Sung Jin Kim ,
Elizabeth Nio ,
Vamsy P Chodavarapu ,
Albert H Titus ,
Mark T Swihart  and
Alexander N Cartwright
Sung Jin Kim
Affiliation:
sk264@buffalo.edu, Univeristy at Buffalo, Electrical Engineering, 332 Bonner Hall, Amherst, NY, 14260, United States, 716-514-3837
Elizabeth Nio
Affiliation:
enio@buffalo.edu, University at Buffalo, Electrical Engineering, Buffalo, NY, 14260, United States
Vamsy P Chodavarapu
Affiliation:
vamsy.chodavarapu@mcgill.ca, McGill University, Electrical & Computer Engineering, Montreal, H3A 2A7, Canada
Albert H Titus
Affiliation:
ahtitus@buffalo.edu, University at Buffalo, Electrical Engineering, Buffalo, NY, 14260, United States
Mark T Swihart
Affiliation:
swihart@buffalo.edu, Univeristy at Buffalo, Chemical and Biological Engineering, Buffalo, NY, 14260, United States
Alexander N Cartwright
Affiliation:
anc@buffalo.edu, University at Buffalo, Electrical Engineering, Buffalo, NY, 14260, United States
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Abstract

We report the development of oxygen sensors using polymer photonic bandgap structure and CMOS chips. These integrated sensors provide a new platform for the development of low cost, low (battery) powered, light weight, robust, fast and small sensors. We demonstrate an approach to encapsulation of chemical and biological recognition elements within the porous structures. This sensing platform is built on our recently demonstrated nanofabrication technique using holographic interferometry of a photo-activated mixture that includes a volatile solvent as well as monomers, photoinitiators, and co-initiators. Resulting structure is nanoporous polymer 1D photonic bandgap structures that has reflection grating property and can be directly integrated into optical sensor systems that we have previously developed. For optical sensor system, CMOS (Complementary Metal Oxide Semiconductor) detectors that include phototransistors, trans impedance amplifier, and other signal processing units are used. Combining CMOS chip and nano-porous polymer reflection grating, we demonstrate an oxygen sensor as a prototype by encapsulating the fluorophore (tris(4,7-diphenyl-1,10-phenathroline)ruthenium(II) using fluorescence intensity.

Keywords

holographypolymersensor
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1056: Symposium HH – Nanophase and Nanocomposite Materials V , 2007 , 1056-HH04-07
Copyright
Copyright © Materials Research Society 2008

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References

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