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III-Nitride Semiconductors and their Modern Devices$
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Bernard Gil

Print publication date: 2013

Print ISBN-13: 9780199681723

Published to Oxford Scholarship Online: January 2014

DOI: 10.1093/acprof:oso/9780199681723.001.0001

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Nitride devices and their biofunctionalization for biosensing applications

Nitride devices and their biofunctionalization for biosensing applications

Chapter:
(p.505) 14 Nitride devices and their biofunctionalization for biosensing applications
Source:
III-Nitride Semiconductors and their Modern Devices
Author(s):

Csilla Gergely

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199681723.003.0014

A biosensor ultimately converts the biological information into a quantitatively measurable signal, usually in the form of optical, acoustic, electrical, or magnetic responses. The use of high-sensitivity semiconductor materials such as that of nitrides can considerably enhance biosensing performances. For example, InN has proven robust surface properties and unusually strong surface electron accumulation, and GaN reveals outstanding chemical stability and is transparent, enabling easy optical readout, rendering nitrides very promising substrates for biological detection. In terms of interfacing them with biological materials, nitrides also present the advantage of a relatively easy functionalization due to their affinity for various organic linkers. Moreover, their nanostructured design makes them ideal candidates for the development of miniaturized biosensors with very low requirements in terms of volume of biological material.

Keywords:   biosensors, photonic crystals

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