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Exploiting the versatility of advanced 3-D fabrication process of magnetic nano-structures by focused-electron-beam-induced deposition, Paolo Vavassori and co-workers propose, fabricate and demonstrate nano-actuated- magneto-mechanical-systems (NAMMS) devices that convert remote magnetic stimuli into mechanical motion with sub-nanometer control. Since remote-activation does not require physical contacts, NAMMS have the potential to operate in diverse environments, such as liquids or even inside living organisms, opening new avenues to key future applications in biology, medicine and nano-robotics.