| DOI | Trouver le DOI : https://doi.org/10.1088/1367-2630/15/7/073038 |
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| Auteur | Rechercher : Mutus, J.Y.1; Rechercher : Livadaru, L.1; Rechercher : Urban, R.1; Rechercher : Pitters, J.1; Rechercher : Peter Legg, A.1; Rechercher : Salomons, M.H.1; Rechercher : Cloutier, M.1; Rechercher : Wolkow, R.A.1 |
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| Affiliation | - Conseil national de recherches du Canada. Institut national de nanotechnologie
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| Format | Texte, Article |
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| Sujet | coherence properties; emission current; extraction voltage; high-aspect ratio; holographic measurement; low energy electrons; point source microscopes; virtual sources; aspect ratio; electrons; optical microscopy; tungsten |
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| Résumé | This report demonstrates the most spatially-coherent electron source ever reported. A coherence angle of 14.3 ± 0.5° was measured, indicating a virtual source size of 1.7 ± 0.6 Å using an extraction voltage of 89.5 V. The nanotips under study were crafted using a spatially-confined, field-assisted nitrogen etch which removes material from the periphery of the tip apex resulting in a sharp, tungsten-nitride stabilized, high-aspect ratio source. The coherence properties are deduced from holographic measurements in a low-energy electron point source microscope with a carbon nanotube bundle as sample. Using the virtual source size and emission current the brightness normalized to 100 kV is found to be 7.9 × 108 A sr-1 cm2. © IOP Publishing and Deutsche Physikalische Gesellschaft. |
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| Date de publication | 2013 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 21269991 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | a351e2f9-8e8e-49d5-bc52-a71e353dead0 |
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| Enregistrement créé | 2013-12-13 |
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| Enregistrement modifié | 2020-04-22 |
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