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Electron Sources and Vacuum Nanoelectronics

Abstract

Nanoscale devices where the conducting channel is in vacuum are becoming more and more attractive as we search for new technologies to make devices working in the THz regime. We are investigating highly controllable nanoscale electron emitters to enable vacuum nano-electronic devices.

Project Description

The mobility of electrons moving in vacuum does not suffer from the scattering events that are present inside matter. As a result, electronic transport can be very fast in vacuum, making ultra-fast operation possible. Nanoscale devices where the conducting channel is in vacuum are thus becoming more and more attractive as we search for new technologies to make devices working in the THz regime. We are investigating highly controllable nanoscale electron emitters to make vacuum nano-electronic devices possible. Electrons can be emitted from a material into vacuum by heating the material to very high temperatures (thermionic emission), the application of a strong external field (field-electron emission), illumination by light (photo-electron emission), or a combination of these. Other than in vacuum nanoelectronics, electron sources are in high demand in applications such as vacuum tubes, electron microscopy and lithography equipment for micro/nanofabrication, field-emission displays, synchrotrons, electron holography and interferometry, electron-beam induced deposition, welding and air pollution removal.

Faculty Supervisor(s)

    Alireza.Nojeh   

Researchers(s)

       

Research Area(s)

    Electronics    Sensors and Actuators