FIELD EMISSION DEVICE WITH ADJUSTABLE CATHODE-TO-ANODE SEPARATION

摘要

A field emission device (100) comprises an anode (105) and a cathode (110) separated by a distance (115) from the anode. At least one of the anode or cathode is configured to move with respect to the other In response to an applied voltage (120) to at least one of the anode and cathode, the distance being adjustable by the movement.