Creation and recovery of a W(111) single atom gas field ion source

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DOIResolve DOI: http://doi.org/10.1063/1.3702209
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TypeArticle
Journal titleThe Journal of Chemical Physics
ISSN0021-9606
Volume136
Issue15
Article number154704
AbstractTungsten single atom tips have been prepared from a single crystal W(111) oriented wire using the chemical assisted field evaporation and etching method. Etching to a single atom tip occurs through a symmetric structure and leads to a predictable last atom unlike etching with polycrystalline tips. The single atom tip formation procedure is shown in an atom by atom removal process. Rebuilds of single atom tips occur on the same crystalline axis as the original tip such that ion emission emanates along a fixed direction for all tip rebuilds. This preparation method could be utilized and developed to prepare single atom tips for ion source development.
Publication date
LanguageEnglish
AffiliationSecurity and Disruptive Technologies; National Research Council Canada
Peer reviewedYes
NPARC number21269043
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Record identifier618e92ef-752d-4dc1-a535-9ad1607bce0a
Record created2013-12-02
Record modified2017-03-23
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