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Interplay Between Surface Chemistry and Optical Behavior of Semiconductor-biomolecule Functionalized Sensing Systems: An Optical Investigation by Spectroscopic Ellipsometry

Published online by Cambridge University Press:  01 February 2011

Maria Losurdo ,
Scott D Wolters ,
Maria M Giangregorio ,
Fabiana Lisco ,
Michael Angelo ,
William Lampert ,
Giovanni Bruno  and
April Brown
Maria Losurdo
Affiliation:
maria.losurdo@ba.imip.cnr.itmariacnr@yahoo.it, United States
Scott D Wolters
Affiliation:
woltersd@duke.edu, Duke University, ECE, Durham, North Carolina, United States
Maria M Giangregorio
Affiliation:
michelaria.giangregorio@ba.imip.cnr.it, CNR-IMIP, Plasmachemistry, Bari, Italy
Fabiana Lisco
Affiliation:
fabianalisco@hotmail.com, CNR-IMIP, Plasmachemistry, Bari, Italy
Michael Angelo
Affiliation:
michael.angelo@duke.edu, Duke University, ECE, Durham, North Carolina, United States
William Lampert
Affiliation:
william.v.lampert@us.army.mil, 3U.S. Army Research Office, Research Triangle Park, North Carolina, United States
Giovanni Bruno
Affiliation:
giovanni.bruno@ba.imip.cnr.it, CNR-IMIP, Plasmachemistry, Bari, Italy
April Brown
Affiliation:
abrown@ee.duke.edu, Duke University, ECE, Durham, North Carolina, United States
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Abstract

Chemical functionalization of bio-molecules, including hemin (an iron porphyrin) and bovine albumin onto Si (100) and GaAs (100) surfaces is reported. Spectroscopic ellipsometry analysis on the optical response of functionalized surfaces provides information on molecular coverage and effective thickness as well as the kinetics of surface attachment. Topographic features of the chemically functionalized surfaces are investigated by atomic force microscopy

Keywords

optical propertiesself-assemblybiological
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1133: Symposium AA – Materials for Optical Sensors in Biomedical Applications , 2008 , 1133-AA07-13
Copyright
Copyright © Materials Research Society 2009

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References

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