Copper-Ion Responsive Chemical Bimetal

Abstract A new type of sensor, called “Chemical Bimetal”, has been developed. Chemical Bimetal uses the “Bimetal effect” and can effectively amplify the expansion or the contraction of materials. The copper-ion responsive Chemical Bimetal was constructed from polyethylene terephthalate (PET) membrane and polyvinyl chloride (PVC) membrane which contains 7-(1-ethenyl-3,3,5,5-tetramethylhexyl)-8-quinolinol (Kelex 100) as a reactant. This Chemical Bimetal responds to copper ion concentration from 0.2 to 1 mM.