أرسل هذا في رسالة قصيرة: Topology-dependent pH-responsive actuation and shape memory programming for biomimetic 4D printing

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