發送短信 : Sub-100-nm sized silver split ring resonator metamaterials with fundamental magnetic resonance in the middle visible spectrum

 __   _     _____    _    _     ______    ______  
| || | ||  |  ___|| | |  | ||  /_   _//  /_   _// 
| '--' ||  | ||__   | |/\| ||   -| ||-     | ||   
| .--. ||  | ||__   |  /\  ||   _| ||_    _| ||   
|_|| |_||  |_____|| |_// \_||  /_____//  /__//    
`-`  `-`   `-----`  `-`   `-`  `-----`   `--`