أرسل هذا في رسالة قصيرة: Facile synthesis of single-crystalline y-cul nanotetrahedrons and their induced transformation to tetrahedral CuO nanocages

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