Neodymium foil is used in alloys to produce permanent magnets and flints. It is also used as an additive to glasses which are used in solid state lasers and light amplifiers. It is also employed in Physical Vapor Deposition (PVD) processes, including thermal and electron-beam (e-beam) evaporation, for the preparation of thin films. The neodymium-based magnet is used extensively in the automotive industry with many applications including starter motors, brake systems, seat adjusters and car stereo speakers. It is also used in CRT displays to enhance contrast between reds and greens.