He also said his team used for production of metal only the needs of the scanning tunneling microscope images.
Electrons are injected into the higher upper state via resonant tunneling from the previous injector.
When scientists apply a voltage to the finger, electrons can hop between it and the surface through a process called quantum tunneling.
Men like Wang Jiangka, a profusely perspiring engineer in charge of one of the steamy tunnels, endure sweltering temperatures at the tunneling site, where workers put in five 12-hour shifts a week.
Scanning tunneling microscope (STM) work by the voltage added to the microscope probe tip and the ends of the scanned object and then detect current changes.