發送短信 : Enhancement of humidity sensitivity of graphene through functionalization with polyethylenimine

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