KentuckyFC writes “Wear year, a bracket of Iranian physicists made a perplexing finding. They placed a silky videotape of bedew dilute in a trifling room and bathed it in two degrees to stirring fields. To their their heels this caused the soak to trade places. They called their gadget a running coat motor and posted on the entanglement a unsociable established of movies showing the phenomenon. The puzzle is this: the electric fields are static, so what’s driving the motor? Now another group of physicists has the answer: a complex interaction between the electric field, the cell container and the liquid causes water to move along the cell wall. Crucially, it moves in opposite directions on opposite sides of the cell and so sets up a circular flow. The phenomenon works only when friction and surface tension are significant forces so the effect is entirely scale dependent. That’s probably why we haven’t seen it before and also why it could have important implications for microfluidic devices such as lab-on-a-chip.”

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