أرسل هذا في رسالة قصيرة: Structure and optical properties of anatase thin films produced by filtered cathodic vacuum arc method

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