This paper presents an explosives sensor. The sensor consists of graphene spray coated onto a substrate with electrodes patterned on the surface. The substrates included glass and flexible polyethylene terephthalate (PET), and the leads were gold and silver respectively. Testing utilizing dinitrotoulene 2,4 (DNT) in a closed container showed the validity of using glass/gold based substrate with a graphene oxide coating as explosive sensors.

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