Abstract
The electric potential change in a single TaSi 2 nanowire during field emission was visualized by means of electron holography. During the field emission, the interference fringes of the electron hologram were blurred locally between the TaSi 2 nanowire and anode. This phenomenon was interpreted as being due to a change in the electric potential of approximately 1 V in the TaSi 2 nanowire after each ballistic emission. The experiments on the single TaSi 2 nanowire field emission behavior provide the useful information for understanding the field emission in the nano-field-emitting device. © 2007 American Chemical Society.