| DOI | Trouver le DOI : https://doi.org/10.1016/j.apsusc.2014.01.173 |
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| Auteur | Rechercher : Vesa, C.1; Rechercher : Urban, R.1; Rechercher : Pitters, J.L.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 | Experiments; Gas industry; Ion sources; Nitrogen; Single crystals; Faceting; Field ion microscopy; Gas assisted etchings; Gas field ion sources; Single atoms; Atoms |
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| Résumé | Experiments aimed at assessing the robustness of nitrogen-etched, single-atom tips (SATs) prepared using W(1 1 1) single crystal wire were performed. Our experiments showed that single-atoms tips sustain minimal damage when exposed to atmospheric conditions and can be readily and quickly nitrogen-etched to single-atom tips thereafter. The SATs can be annealed at temperatures up to 1100 C with minimal shape changes. Moreover, annealing temperatures in excess of 1200 C resulted in an apex faceting which may prove important in further single-atom tip creation. Procedures for warming of the SATs from operating temperatures of 80 K were also evaluated to determine conditions that limit tip contamination. These results show that SATS could be fabricated in a dedicated vacuum system and subsequently transferred to other instruments where they would undergo a brief conditioning procedure to recover the single-atom apex configuration prior to being subjected to operating conditions.. © 2014 Elsevier B.V. |
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| Date de publication | 2014 |
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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 | 21272142 |
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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 | bf85b05e-65a5-49d4-9f02-ed0535b49a32 |
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| Enregistrement créé | 2014-07-23 |
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| Enregistrement modifié | 2020-04-22 |
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