Abstract: Herein disclosed is configuring a layered receptor with at least one layer comprising graphene oxide and an biomarker binding layer configured to bind with a targeted biomarker, connecting a working electrode comprising carbon nanotubes (CNT) and a reference electrode to the layered receptor, and detecting events comprising the targeted biomarker binding layer with the biomarker binding layer, by measuring changes in impedance to a plurality of frequencies of an alternating current voltage signal applied through a patient's body fluid between the working electrode and the reference electrode. The layered receptor may further comprise a plurality of self-assembled layers, comprising, in sequence, a layer abutting the CNT and comprising a polymer and metal nanoparticles, a layer comprising an organosulfur, the graphene oxide layer and the biomarker binding layer. The biomarker binding layer may comprise Syn-211, LB509 or 5G4. The targeted biomarker may be alpha-synuclein.

Abstract: Herein disclosed is configuring a layered receptor with at least one layer comprising graphene oxide and an biomarker binding layer configured to bind with a targeted biomarker, connecting a working electrode comprising carbon nanotubes (CNT) and a reference electrode to the layered receptor, and detecting events comprising the targeted biomarker binding layer with the biomarker binding layer, by measuring changes in impedance to a plurality of frequencies of an alternating current voltage signal applied through a patient's body fluid between the working electrode and the reference electrode. The layered receptor may further comprise a plurality of self-assembled layers, comprising, in sequence, a layer abutting the CNT and comprising a polymer and metal nanoparticles, a layer comprising an organosulfur, the graphene oxide layer and the biomarker binding layer. The biomarker binding layer may comprise Syn-211, LB509 or 5G4. The targeted biomarker may be alpha-synuclein.