Thin films of transition metal compositions formed with magnesium that are metals, alloys, hydrides or mixtures of alloys, metals and/or hydrides exhibit reversible color changes on application of electric current or hydrogen. Thin films of these materials are suitable for optical switching elements, thin film displays, sun roofs, rear-view mirrors and architectural glass.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
The invention described and claimed herein was made in part utilizing funds supplied by the United States Department of Energy under contract No. DE-AC03-76SF000-98 between the U.S. Department of Energy and the Regents of the University of California. The government has certain rights to the invention.