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Título

An inkjet-printed field-effect transistor for label-free biosensing

AutorMedina-Sánchez, Mariana ; Martínez-Domingo, Carmen; Ramón, Eloi; Merkoçi, Arben
Fecha de publicación2014
EditorWiley-VCH
CitaciónAdvanced Functional Materials 24(40): 6291-6302 (2014)
ResumenA flexible, biological field-effect transistor (BioFET) for use in biosensing is reported. The BioFET is based on an organic thin-film transistor (OTFT) fabricated mainly by inkjet printing and subsequently functionalized with antibodies for protein recognition. The BioFET is assessed for label-free detection of a model protein, human immunoglobulin G (HIgG). It is characterized electrically to evaluate the contribution of each step in the functionalization of the OTFT and to detect the presence of the target protein. The fabrication, structure, materials optimization, electrical characteristics, and functionality of the starting OTFT and final BioFET are also discussed. Different materials are evaluated for the top insulator layer, with the aim of protecting the lower layers from the electrolyte and preserving the BioFET electrical performance.
URIhttp://hdl.handle.net/10261/131420
DOI10.1002/adfm.201401180
Identificadoresdoi: 10.1002/adfm.201401180
issn: 1616-3028
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