A team of researchers in France has found that applying a voltage across a 100-nm-thick cylindrical soap film causes the fluid inside it to flow upwards. If the voltage is increased, the film thickens ...
Crimson tide: Ultrasonically encoded photoacoustic flow images of blood in a tube. (Courtesy: L Wang et al., Phys. Rev. Lett. 111 204301) A new method for imaging the flow of blood has been developed ...
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