Tiny engine boosts nanotech hopes

Scientists at the University of Edinburgh have made our device design projects from last semester one step closer to reality. This new nano-machine, rotaxane, can perform the task of moving and sorting molecules. It is powered by light and is modeled after molecules in nature that support photosynthesis and other light-incorporating processes.
This successful attempt at a functional nano-machine could likely spark a huge advancement in nano-scale technology in the next decade. The concept of "smart drugs" could take off after this technology is further developed. Maybe our device designs weren't so far fetched after all!

http://news.bbc.co.uk/2/hi/technology/6320781.stm