發送短信 : Caustic graphene plasmons with Kelvin angle

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