A new holographic method has been used to convert ordinary electron beams into helical beams. These beams show promise in applications such as the spectroscopic analysis of materials with intrinsic handedness and nanoparticle manipulation.
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Yuan, J. Bright electron twisters. Nature 509, 37–38 (2014). https://doi.org/10.1038/509037a
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DOI: https://doi.org/10.1038/509037a
