Researchers at Northwestern University in the US have developed a new molecule capable of pumping other small molecules up an energy gradient. The new molecular pump, which is very much like the protein pumps in our cells, might be used to design artificial molecular machines similar to those found in nature. Such machines could be important for a wide range of applications in the future, such as synthetic muscles, nano- and micro-robots and advanced mechanical motors…..
http://nanotechweb.org/cws/article/tech/61241