Low noise and stable emission from carbon nanotube electron sources

Autor:	William I. Milne, Niels de Jonge, Jim T. Oostveen, Kenneth B. K. Teo, Myriam Allioux
Rok vydání:	2005
Předmět:	Materials science Physics and Astronomy (miscellaneous) Noise spectral density Shot noise Analytical chemistry Carbon nanotube Electron Molecular physics Frequency spectrum law.invention Low noise Field electron emission law Vacuum level
Zdroj:	Applied Physics Letters. 87:133118
ISSN:	1077-3118 0003-6951
DOI:	10.1063/1.2058225
Popis:	Remarkably stable and low noise field-emission electron sources have been obtained using individual carbon nanotubes. The maximum current fluctuation observed over 1h was merely 0.5% and the emission frequency spectrum exhibited 1∕f behavior over a bandwidth of 0.1–25Hz, above which the shot-noise limit was reached. The average noise percentage was determined to be 0.08% (i.e., a signal-to-noise ratio of 1250) for seven CNT emitters operated at several current levels. The influence of the vacuum level was also investigated.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a63394f271cd5bfeee80b958f41b9af8 https://doi.org/10.1063/1.2058225 Zobrazit plný text záznamu