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Journal Article

Microelectrode for energy and current control of nanotip field electron emitters

MPS-Authors
http://pubman.mpdl.mpg.de/cone/persons/resource/persons85137

Lüneburg,  Sebastian
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons32794

Müller,  Melanie
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons21937

Paarmann,  Alexander
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons21497

Ernstorfer,  Ralph
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Fulltext (public)

1.4831735.pdf
(Publisher version), 939KB

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Citation

Lüneburg, S., Müller, M., Paarmann, A., & Ernstorfer, R. (2013). Microelectrode for energy and current control of nanotip field electron emitters. Applied Physics Letters, 103(21): 213506. doi:10.1063/1.4831735.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0014-C97D-3
Abstract
Emerging experiments and applications in electron microscopy, holography, and diffraction benefit from miniaturized electron guns for compact experimental setups. We present a highly compact microelectrode integrated field emitter that consists of a tungsten nanotip coated with a few micrometers thick polyimide film followed by a several nanometers thick gold film, both positioned behind the exposed emitter apex by approximately 10–30 μm. The control of the electric field strength at the nanometer scale tip apex allows suppression, extraction, and energy tuning of field-emitted electrons. The performance of the microelectrode is demonstrated experimentally and supported by numerical simulations.