Autonomous motion of metallic microrods propelled by ultrasound.

  title={Autonomous motion of metallic microrods propelled by ultrasound.},
  author={Wei Wang and Luz Angelica Castro and Mauricio Hoyos and Thomas E Mallouk},
  journal={ACS nano},
  volume={6 7},
Autonomously moving micro-objects, or micromotors, have attracted the attention of the scientific community over the past decade, but the incompatibility of phoretic motors with solutions of high ionic strength and the use of toxic fuels have limited their applications in biologically relevant media. In this letter we demonstrate that ultrasonic standing waves in the MHz frequency range can levitate, propel, rotate, align, and assemble metallic microrods (2 μm long and 330 nm diameter) in water… CONTINUE READING
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