Swirled to the Left or Right? Nanofibers Align in Stirred Liquid

Is the vortex in a stirred liquid swirling clockwise or counterclockwise? A zinc porphyrin dendrimer—a branched molecule with a central zinc atom—can answer this question. As Japanese researchers report in the journal Angewandte Chemie, the optical activity of a solution containing this substance changes rapidly when the direction of stirring is changed.

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<p><a href="http://www.physorg.com/news109414286.html">Swirled to the Left or Right? Nanofibers Align in Stirred Liquid</a></p> <p>Is the vortex in a stirred liquid swirling clockwise or counterclockwise? A zinc porphyrin dendrimer—a branched molecule with a central zinc atom—can answer this question. As Japanese researchers report in the journal <i>Angewandte Chemie</i>, the optical activity of a solution containing this substance changes rapidly when the direction of stirring is changed.</p>