How to Manipulate Nanoparticles with an Electron Beam?

Recently discovered vortex electron waves carry a quantized amount of orbital angular momentum. Interacting them with gold nanoparticles supported on a thin membrane makes the particles rotate clockwise or anticlockwise with time depending on the sign of the orbital angular momentum of the electron vortex. This experiment opens possibilities to manipulate nanoparticles and study friction on the nanoscale. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.