USA As Represented by Secretary of the Navy

Enrique Cobas

Berend T Jonker

Shu-Fan Cheng

F Keith Perkins

Olaf M J Van 't Erve

Adam L Friedman

Glenn Jernigan

Paul M Campbell

Olaf M J Van't Erve

A magnetic field sensor based on two anti-ferromagnetically coupled magnetic layers separated by multilayer graphene, prepared in a single sputter chamber without a vacuum break.

Magnetic field sensor using in situ solid source graphene and graphene induced anti-ferromagnetic coupling and spin filtering

A method of making a magnetic field sensor using in situ solid source graphene and graphene induced anti-ferromagnetic coupling and spin filtering, comprising providing a substrate comprising silicon wafers and thermal oxide, performing DC magnetron sputtering, back-sputtering the substrate, growing amorphous carbon on the substrate, sputtering and growing a first ferromagnetic metal surface on the amorphous carbon, annealing the substrate and the amorphous carbon and the first ferromagnetic metal surface, forming a graphene film on the first ferromagnetic metal surface, wherein the first ferromagnetic metal surface comprises NiFe, sputtering and growing a second ferromagnetic film on the graphene film, and capping the second ferromagnetic film with a platinum layer.

Method of making a magnetic field sensor

A method of making a low-dimensional material chemical vapor sensor comprising exfoliating MoS, applying the monolayer flakes of MoSonto a SiO/Si wafer, applying a methylmethacrylate (MMA)/polymethylmethacrylate (PMMA) film, defining trenches for the deposition of metal contacts, and depositing one of Ti/Au, Au, and Pt in the trench and resulting in a MoSsensor. A low-dimensional material chemical vapor sensor comprising monolayer flakes of MoS, trenches in the SiO/Si wafer, metal contacts in the trenches, and thereby resulting in a MoSsensor. A full spectrum sensing suite comprising similarly fabricated parallel sensors made from a variety of low-dimensional materials including graphene, carbon nanotubes, MoS, BN, and the family of transition metal dichalcogenides. The sensing suites are small, robust, sensitive, low-power, inexpensive, and fast in their response to chemical vapor analytes.

Low-dimensional material chemical vapor sensors

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Capitol Heights, MD, United States of America

Enrique Cobas