Scanning Tunneling microscope
Scanning Tunneling Microscope (STM) is an instrument for imaging surfaces at the atomic level. It is based on the concept of quantum tunneling. A good STM resolution is considered to be 0.1nanometer lateral and 0.01nanometer depth. With this resolution, individual atoms within materials are routinely imaged and manipulated.
STM can be used in ultra-high vacuum, air, water, and various other liquid or gas ambient applications as well as in extreme low or extreme high temperatures applications.