發送短信 : Optical band gap of cross-linked, curved, and radical polyaromatic hydrocarbons

  ______     ___     _    _      ___      ____    
 /_   _//   / _ \\  | |  | ||   / _ \\   |  _ \\  
 `-| |,-   / //\ \\ | |/\| ||  | / \ ||  | |_| || 
   | ||   |  ___  |||  /\  ||  | \_/ ||  | .  //  
   |_||   |_||  |_|||_// \_||   \___//   |_|\_\\  
   `-`'   `-`   `-` `-`   `-`   `---`    `-` --`