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Electron hologram of a transistor's interior. Left: An image of the amplitude of electron waves sent through a 2-dimensional section of a transistor using a transmission electron microscope (TEM). Center: a phase image of the same region, providing in effect a map of the electrostatic potential in the source-gate-emitter zone. Right: a map of the charge distribution in the transistor.
This research is reported in an upcoming issue of Physical Review Letters.