發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : Scanning tunnelling microscopy study of palladium on stepped Cu(210) surfaces: chemical contrast and room-temperature tip-induced motion