'Two-Faced' Particles Act Like Tiny Submarines

For the first time, researchers at North Carolina State University have demonstrated that microscopic "two-faced" spheres whose halves are physically or chemically different – so-called Janus particles – will move like stealthy submarines when an alternating electrical field is applied to liquid surrounding the particles.

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<p><a href="http://www.physorg.com/news122832433.html">'Two-Faced' Particles Act Like Tiny Submarines</a></p> <p>For the first time, researchers at North Carolina State University have demonstrated that microscopic "two-faced" spheres whose halves are physically or chemically different – so-called Janus particles – will move like stealthy submarines when an alternating electrical field is applied to liquid surrounding the particles.</p>