Graphene-based liquid-gated field effect transistor for biosensing: Theory and experiments.

ABSTRACT: We present an experimental and theoretical characterization for reduced Graphene-Oxide (rGO) based FETs used for biosensing applications. The presented approach shows a complete result analysis and theoretically predictable electrical properties. The formulation was tested for the analysis of the device performance in the liquid gate mode of operation with variation of the ionic strength and pH-values of the electrolytes in contact with the FET. The dependence on the Debye length was confirmed experimentally and theoretically, utilizing the Debye length as a working parameter and thus defining the limits of applicability for the presented rGO-FETs. Furthermore, the FETs were tested for the sensing of biomolecules (bovine serum albumin (BSA) as reference) binding to gate-immobilized anti-BS

SUBMITTER: Reiner-Rozman C 

PROVIDER: S-EPMC4707551 | biostudies-literature | 2015 Aug

REPOSITORIES: biostudies-literature