Text this: A self-DLC coated cathode plasma source

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