發送短信 : Bright and dark modes induced by graphene bubbles

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