發送短信 : Manipulation of ferrofluid droplets on an open planar surface

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