أرسل هذا في رسالة قصيرة: Graphene phonon softening and splitting by directional straining

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