Text this: Infrared reflectance of GaN films grown on Si(001) substrates

__    __    _____    _    _     ______    _____   
\ \\ / //  |  ___|| | |  | ||  /_   _//  / ____|| 
 \ \/ //   | ||__   | |/\| ||   -| ||-  / //---`' 
  \  //    | ||__   |  /\  ||   _| ||_  \ \\___   
   \//     |_____|| |_// \_||  /_____//  \_____|| 
    `      `-----`  `-`   `-`  `-----`    `----`