Abstract
The linear momentum transfer from photons to asymmetrically shaped structures generates an optomechanical rotation, but these micron-sized structures require costly, high-precision fabrication. Nature, however, provides a great diversity of engineered forms and dead, but rigid, asymmetrically shaped bacteria can provide a low cost alternative. In this work, we show that helical bacteria rotate very quickly in optical tweezers. Their rotation is fast enough to create a strong whirl, such that they may act as micropumps in thin capillaries.
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