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High Sensitivity Photonic Crystal Biosensor Incorporating Nanorod Structures for Enhanced Surface Area

Published online by Cambridge University Press:  01 February 2011

Wei Zhang ,
Nikhil Ganesh ,
Ian D. Block  and
Brian T. Cunningham
Wei Zhang
Affiliation:
wzhang4@uiuc.edu, University of Illinois at Urbana - Champaign, Department of Materials Science and Engineering, 208 North Wright Street, Urbana, IL, 61801, United States, 217-244-0613
Nikhil Ganesh
Affiliation:
nganesh2@uiuc.edu, University of Illinois at Urbana - Champaign, Nano Sensors Group, 208 North Wright Street, Urbana, IL, 61801, United States
Ian D. Block
Affiliation:
iblock2@uiuc.edu, University of Illinois at Urbana - Champaign, Nano Sensors Group, 208 North Wright Street, Urbana, IL, 61801, United States
Brian T. Cunningham
Affiliation:
bcunning@uiuc.edu, University of Illinois at Urbana - Champaign, Nano Sensors Group, 208 North Wright Street, Urbana, IL, 61801, United States
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Abstract

We report efforts at enhancement of the surface area of a photonic crystal biosensor through incorporation of a porous titanium dioxide film into the device. The film possessing the structure of nanorods is deposited by the glancing angle deposition technique. Results for detection of polymer films, large proteins and small molecules indicate up to a four-fold enhancement of detected adsorbed mass density for high surface area sensors, compared with sensors without the high surface area coating.

Keywords

biomaterialporositythin film
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1010: Symposium V – Functional Materials for Chemical and Biochemical Sensors , 2007 , 1010-V06-10
Copyright
Copyright © Materials Research Society 2007

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