發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : Gradient magnifier lens with homogeneous isotropic dielectrics for subwavelength super-imaging