Insect-based BioFETs with improved signal characteristics.
Insect-based BioFETs (biologically sensitive field-effect transistors) with improved signal characteristics have been developed. These BioFETs require a specifically adapted signal interfacing between a FET as signal transducer and an intact insect antenna as biocomponent. Therefore, different field-effect transistors have been fabricated in order to study the signal transfer at the bioelectronic interface. As relevant features of the BioFET, its current-voltage characteristics, the transconductance and the signal-to-noise ratio have been investigated as affected by the choice of gate insulator materials and gate dimensions (width-to-length ratio, thickness of the dielectric layers). The performance of the improved FET arrangement in the isolated-antenna BioFET was validated by employing dilution series of the plant odour component Z-3-hexen-1-ol.
Schroth
P
P
Institut für Schicht- und Ionentechnik, Forschungszentrum Jülich GmbH, Germany.
Schöning
M J
MJ
Kordos
P
P
Lüth
H
H
Schütz
S
S
Weissbecker
B
B
Hummel
H E
HE
D000818:Animals; D015374:Biosensing Techniques; D002138:Calibration; D001517:Coleoptera; D012679:Sense Organs; D012815:Signal Processing, Computer-Assisted; D014173:Transistors, Electronic