Electrodeposited metal modified laser scribed graphene electrode and method
AssigneeKing Abdullah University of Science and Technology
InventorsSakandar RAUF, Abdellatif AIT LAHCEN, Abdulrahman ALJEDAIBI, Khaled Nabil SALAMA
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Abstract
A biomarker detection sensor includes a substrate; a working electrode formed by laser-scribing directly into the substrate so that a material of the substrate is transformed into graphene; a metal nanostructure formed on a graphene surface of the working electrode, wherein the metal nanostructure is shaped as a tree with plural branches extending away from the graphene surface; an aptamer covering a first surface area of the metal nanostructure; a reference electrode; and a counter electrode.
Claims15
1-6. (canceled)
A biomarker detection sensor comprising:
- a substrate;
- a working electrode formed by laser-scribing directly into the substrate so that a material of the substrate is transformed into graphene;
- a metal nanostructure formed on a graphene surface of the working electrode, wherein the metal nanostructure is shaped as a tree with plural branches extending away from the graphene surface;
- a polymer covering the graphene surface of the metal nanostructure, wherein plural cavities are formed in the polymer with a biomarker to be detected;
- a reference electrode;
- and
- a counter electrode.
A method for making a biomarker detection sensor, the method comprising:
- providing a polyimide substrate;
- scribing with a laser beam into the polyimide substrate to form a graphene working electrode;
- depositing a metal by electrochemical deposition on the graphene working electrode to form a metal nanostructure that extends as a tree with branches from a surface of the graphene working electrode;
- adding a biomarker and a polymer to the surface of the graphene working electrode;
- and
- removing the biomarker to form corresponding cavities into the deposited polymer.
A system for determining a biomarker, the system comprising:
- a biomarker detection sensor;
- a signal analyzer configured to directly connect to the biomarker detection sensor to receive measurements and generate a signal indicative of the biomarker;
- and
- a portable computing device that receives the signal and displays the signal on a screen,
- wherein the biomarker detection sensor comprises:
- a working electrode formed by laser-scribing directly into a substrate so that a material of the substrate is transformed into graphene,
- a metal nanostructure formed on a graphene surface of the working electrode, wherein the metal nanostructure is shaped as a tree with plural branches extending away from the graphene surface, and
- a polymer covering the graphene surface of the metal nanostructure, wherein plural cavities are formed in the polymer with a biomarker to be detected.
Dependencies are inferred from the claim text.