Text this: Size dependence of Au NP-enhanced surface plasmon resonance based on differential phase measurement

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