發送短信 : Graphene-based spin logic gates

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