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AlGaN/GaN-sensors for Monitoring of Enzyme Activity by pH-Measurements

Published online by Cambridge University Press:  01 February 2011

Gabriel Kittler ,
Armin Spitznas ,
Benedikt Luebbers ,
Vadim Lebedev ,
Dennis Wegener ,
Michael Gebinoga ,
Frank Weise ,
Andreas Schober  and
Oliver Ambacher
Gabriel Kittler
Affiliation:
[email protected], TU Ilmenau, Institute of Micro- and Nanotechnologies, Nanotechnology, Gustav-Kirchhoff-Str. 7, Ilmenau, 98963, Germany
Armin Spitznas
Affiliation:
[email protected], Institute of Micro- and Nanotechnologies, Technical University Ilmenau, Gustav-Kirchhoff-Str. 7, Ilmenau, 98963, Germany
Benedikt Luebbers
Affiliation:
[email protected], Institute of Micro- and Nanotechnologies, Technical University Ilmenau, Gustav-Kirchhoff-Str. 7, Ilmenau, 98963, Germany
Vadim Lebedev
Affiliation:
[email protected], Institute of Micro- and Nanotechnologies, Technical University Ilmenau, Gustav-Kirchhoff-Str. 7, Ilmenau, 98963, Germany
Dennis Wegener
Affiliation:
[email protected], Institute for Physical High Technology Jena, P.O. Box 100239, Jena, 07702, Germany
Michael Gebinoga
Affiliation:
[email protected], Center for Innovation Competence MacroNano®, Microfluidics and Biosensors, Gustav-Kirchhoff-Str. 7, Ilmenau, 98693, Germany
Frank Weise
Affiliation:
[email protected], Center for Innovation Competence MacroNano®, Microfluidics and Biosensors, Gustav-Kirchhoff-Str. 7, Ilmenau, 98693, Germany
Andreas Schober
Affiliation:
[email protected], Center for Innovation Competence MacroNano®, Microfluidics and Biosensors, Gustav-Kirchhoff-Str. 7, Ilmenau, 98693, Germany
Oliver Ambacher
Affiliation:
[email protected], Institute of Micro- and Nanotechnologies, Technical University Ilmenau, Gustav-Kirchhoff-Str. 7, Ilmenau, 98963, Germany
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Abstract

GaN based pH-sensors were used to measure the reaction and the kinetics of a lipase assay producing caprylic acid. Sensor structures consist of an AlGaN/GaN-heterostructure grown by plasma-induced molecular beam epitaxy with a thin GaN cap layer. The carrier concentration of the two-dimensional electron gas is manipulated by changing the surface potential due to changes in pH value.

Keywords

nitridesensorchemical reaction
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 955: Symposium I – Advances in III-V Nitride Semiconductor Materials and Devices , 2006 , 0955-I14-03
Copyright
Copyright © Materials Research Society 2007

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References

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