초록 ▼

A chemical switch device comprising a film which irreversibly reacts upon exposure to specific chemical components in the environment under the conditions of measurement. The reactions can lead to large changes in the physical and chemical properties of the film which are measurable electrically, op

A chemical switch device comprising a film which irreversibly reacts upon exposure to specific chemical components in the environment under the conditions of measurement. The reactions can lead to large changes in the physical and chemical properties of the film which are measurable electrically, optically or by other methods.

대표청구항 ▼

[ What is claimed is:] [1.] A system for detecting the presence of a chemical constituent comprising:at least one switch element substantially inert and unreactive to primary constituents in an open ambient environment, said at least one switch element being selectively and irreversibly reactive onl

[ What is claimed is:] [1.] A system for detecting the presence of a chemical constituent comprising:at least one switch element substantially inert and unreactive to primary constituents in an open ambient environment, said at least one switch element being selectively and irreversibly reactive only with said chemical constituent to be detected in an open ambient environment; andmeans for measuring an electrical response of said at least one switch element;wherein said electrical response of said at least one switch element is caused by the presence of a chemical constituent selected from the group consisting of halogens, ammonia, hydrogen chloride, hydrogen fluoride, hydrogen sulfide and methane.