發送短信 : Amplification of evanescent waves in a lossy left-handed material slab

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