أرسل هذا في رسالة قصيرة: Flame-made Nb-doped zinc oxide nanoparticles for application in polymer solar cells

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