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Sensors 2009, 9(7), 5149-5172; doi:10.3390/s90705149
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Optical Biosensors Based on Semiconductor Nanostructures

* ,  and
Received: 19 May 2009 / Revised: 19 June 2009 / Accepted: 29 June 2009 / Published: 29 June 2009
(This article belongs to the Special Issue Nanotechnological Advances in Biosensors)
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Abstract

The increasing availability of semiconductor-based nanostructures with novel and unique properties has sparked widespread interest in their use in the field of biosensing. The precise control over the size, shape and composition of these nanostructures leads to the accurate control of their physico-chemical properties and overall behavior. Furthermore, modifications can be made to the nanostructures to better suit their integration with biological systems, leading to such interesting properties as enhanced aqueous solubility, biocompatibility or bio-recognition. In the present work, the most significant applications of semiconductor nanostructures in the field of optical biosensing will be reviewed. In particular, the use of quantum dots as fluorescent bioprobes, which is the most widely used application, will be discussed. In addition, the use of some other nanometric structures in the field of biosensing, including porous semiconductors and photonic crystals, will be presented.
Keywords: nanostructure; quantum dot; biosensor nanostructure; quantum dot; biosensor
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Martín-Palma, R.J.; Manso, M.; Torres-Costa, V. Optical Biosensors Based on Semiconductor Nanostructures. Sensors 2009, 9, 5149-5172.

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