Patent ID: 8415166
Filing Date: 2013-04-09
Classification: G01N,Y10T

Abstract:
1. A semiconductor device for the detection of a peroxide-based explosive, said device being composed of at least one insulating or semi-insulating layer, at least one conducting semiconductor layer, two conducting pads, and a layer of multifunctional organic molecules, each one of said molecules being (i) a cyclodextrin, optionally perthiolated or perphosphonated; or (ii) a compound of the formula RPO(OH) 2 or RSH, wherein R is an aliphatic hydrocarbyl optionally either interrupted with one or more heteroatoms selected from the group consisting of O, S and N, or containing a functional end-group comprising a heteroatom selected from the group consisting of O, S and N, wherein said at least one conducting semiconductor layer is on top of one of said insulating or semi-insulating layers, said two conducting pads are on both sides on top of an upper layer which is either one of said conducting semiconductor layers or another of said insulating or semi-insulating layers, making electrical contact with said at least one conducting semiconductor layer, and said layer of multifunctional organic molecules is adsorbed on the surface of said upper layer, between the two conducting pads, and wherein exposure of said multifunctional organic molecules to a gaseous mixture containing vapors of said peroxide-based explosive causes a current change through the semiconductor device when a constant electric potential is applied between the two conducting pads.