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Volume 17 (2003), Issue 2-3, Pages 613-625

Biosensors based on nucleic acid interaction

M. Minunni

Biosensor Laboratory, Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy

Copyright © 2003 Hindawi Publishing Corporation. 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.


DNA sensing is an emerging technology based on hybridisation reaction between an immobilised DNA probe and a molecular target, consisting of a probe complementary sequence in solution. Many application have been developed in the field of environmental, food and clinical analysis.

Surface plasmon resonance and piezoelectric sensing are reported as transduction principles for DNA-based devices. These techniques are able to monitor in real-time and without the use of any label the hybridisation reaction between nucleic acids. Particular attention is given to Genetically Modified Organism detection.