Sensor device formed from conductive graphene film

A sensor device comprising:

• a conductive graphene film consisting essentially of one to eight monolayers of carbon atoms, the conductive graphene film covered on at least one side by a graphene support layer of parylene, the graphene support layer of parylene having an inside surface;
• the graphene support layer of parylene contacting with and supporting the conductive graphene film;
• wherein said graphene support layer of parylene is tube-shaped, the graphene support layer of parylene having a thickness of between 5 nm and 5 mm;
• a detection element configured to sense an environmental change, either of a chemical or a physical nature, said detection element being formed of the conductive graphene film on a portion of the inside surface of the graphene support layer of parylene;
• and
• an electrode disposed over a selected area of the graphene support layer of parylene, the electrode comprising a conductive graphene film, the conductive graphene film consisting essentially of a graphene film to one to eight monolayers of carbon atoms;
• wherein the graphene support layer of parylene supports the electrode during operation of the sensor device,
• wherein the graphene support layer of parylene is deposited by gas phase deposition on a surface of the graphene film,
• wherein the graphene support layer of parylene supports the graphene film during operation of the sensor device,
• the parylene repairing some defects in said conductive graphene film, without damaging or polluting the conductive graphene film, and without degrading conductivity of the conductive graphene film, and
• wherein the sensor device is configured for detection.