from the take-a-spin-around-the-pin dept.
MrSeb writes "Just a couple of months after nanoengineers at Tufts University developed an 18-atom single-molecule electric motor, researchers from the University of Twente in the Netherlands have gone one better: They've made a car using just a single molecule. To create the vehicle, Tibor Kudernac and colleagues crafted a molecule with a long body and four 'paddle' (wheel) features attached at each corner. The molecule was created with a bottom-up process, where each part of the molecule is gently slotted together. By applying tiny amounts of electricity with a scanning tunneling microscope (STM) to the finished vehicle, the wheels are forced to make a quarter turn. The wheels naturally take another quarter turn to restore equilibrium — and then the STM starts the process all over again. The end result is very slow forward movement — six nanometers per 10 electric pulses."
Thus mathematics may be defined as the subject in which we never know
what we are talking about, nor whether what we are saying is true.
-- Bertrand Russell