title: Ion-sensitive field effect transistors using carbon nanotubes as the transducing layer.
abstract: We report a new type of ion-sensitive field effect transistor (ISFET). This type of ISFET incorporates a new architecture, containing a network of single-walled carbon nanotubes (SWCNTs) as the transduction layer, making an external reference electrode unnecessary. To show an example of its application, the SWCNT-based ISFET is able to detect at least 10(-8) M of potassium in water using an ion-selective membrane containing valinomycin.
authors.affiliation: Department of Analytical Chemistry and Organic Chemistry, Rovira i Virgili University, C/Marcel.lí Domingo s/n, 43007 Tarragona, Spain.
authors.forename: Cristina C
authors.initials: CC
authors.lastname: Cid
authors.forename: Jordi
authors.initials: J
authors.lastname: Riu
authors.forename: Alicia
authors.initials: A
authors.lastname: Maroto
authors.forename: F Xavier
authors.initials: FX
authors.lastname: Rius