Since the early days of nanotechnology, people have used the scanning tunnelling microscope (STM) to manipulate atoms either mechanically or from the force due to charge injection. More recently researchers have noted that charge injected from an STM tip can manipulate molecules some distance away, by “remote control”. Now experiments have visualised the quantum mechanical behaviour of electrons at the surface beneath the tip for the first time, offering a better understanding of charge propagation processes that may also affect device efficiency in solar cells and radiotherapy enhancers……….
http://nanotechweb.org/cws/article/tech/66490
