Cleaved thin-film probes for scanning tunneling microscopy.
Nanotechnology
; 27(3): 03LT01, 2016 Jan 22.
Article
em En
| MEDLINE
| ID: mdl-26636763
ABSTRACT
We introduce an alternative type of probe for scanning tunneling microscopy (STM). Instead of using a needle-like tip made from a piece of metallic wire, a sharp-edged cleaved insulating substrate, which is initially covered by a thin conductive film, is used. The sharp tip is formed at the intersection of the two cleaved sides. Using this approach a variety of materials for STM probes can be used, and functionalization of STM probes is possible. The working principle of different probes made of metallic (Pt, Co, and CoB), indium-tin oxide, as well as Cu/Pt and Co/Pt multilayer films are demonstrated by STM imaging of clean Cu(001) and Cu(111) surfaces as well as the epitaxial Co clusters on Cu(111).
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MEDLINE
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En
Ano de publicação:
2016
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Article