Along the same lines as the molecular-car (something I would have blogged about had I started this four years ago) is the molecular-gear. This gear has a diameter of just 1.2 nanometers! The major breakthrough here is that this gear can be deliberately rotated. Previous developments in molecular gears resulted in random, uncontrolled rotation and displacement. Possible uses of this gear could include the building of molecular scale machinery for use in biological or material advances.This was developed by a group (lead by Christian Joachim) from A*STAR’s Institute of Materials Research and Engineering (IMRE) in Singapore. You can download the full .pdf abstract here.
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