title: Insect-based BioFETs with improved signal characteristics.
abstract: 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.
authors.affiliation: Institut für Schicht- und Ionentechnik, Forschungszentrum Jülich GmbH, Germany.
authors.forename: P
authors.initials: P
authors.lastname: Schroth
authors.forename: M J
authors.initials: MJ
authors.lastname: Schöning
authors.forename: P
authors.initials: P
authors.lastname: Kordos
authors.forename: H
authors.initials: H
authors.lastname: Lüth
authors.forename: S
authors.initials: S
authors.lastname: Schütz
authors.forename: B
authors.initials: B
authors.lastname: Weissbecker
authors.forename: H E
authors.initials: HE
authors.lastname: Hummel
mesh_terms: D000818:Animals; D015374:Biosensing Techniques; D002138:Calibration; D001517:Coleoptera; D012679:Sense Organs; D012815:Signal Processing, Computer-Assisted; D014173:Transistors, Electronic