Characterising an insect antenna as a receptor for a biosensor by means of impedance spectroscopy

The sensory abilities of insects are of great scientific interest. As an example, a biosensor on the basis of an insect antenna has been developed. With this sensor, organic odour molecules, like cis-3-hexen-1-ol, can be detected in concentrations down to the ppt range. To characterise the insect an...

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Bibliographic Details
Published in:Electrochimica acta 2001-09, Vol.47 (1), p.293-297
Main Authors: Schroth, P, Lüth, H, Hummel, H.E, Schütz, S, Schöning, M.J
Format: Article
Language:English
Subjects:
Bioelectronic interface
BioFET
Biological and medical sciences
Biosensor
Biosensors
Biotechnology
Fundamental and applied biological sciences. Psychology
Impedance spectroscopy
Insect antenna
Methods. Procedures. Technologies
Various methods and equipments
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Summary:The sensory abilities of insects are of great scientific interest. As an example, a biosensor on the basis of an insect antenna has been developed. With this sensor, organic odour molecules, like cis-3-hexen-1-ol, can be detected in concentrations down to the ppt range. To characterise the insect antenna as the receptor part of the biosensor in more detail, measurements based on impedance spectroscopy have been performed in this work, employing various conditions: the impedance of the antenna was observed to vary with the age, the applied bias voltage and the amount of applied odour. Hence, it could be shown that the antenna is not just a passive electronic device, but reacts actively to some parameters such as voltage or odour concentration.
ISSN:0013-4686
1873-3859
DOI:10.1016/S0013-4686(01)00568-0