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dc.contributor.authorFishlock, T. W.en_US
dc.contributor.authorOral, A.en_US
dc.contributor.authorEgdell, R. G.en_US
dc.contributor.authorPethica, J. B.en_US
dc.date.accessioned2016-02-08T10:38:34Z
dc.date.available2016-02-08T10:38:34Z
dc.date.issued2000en_US
dc.identifier.issn0028-0836
dc.identifier.urihttp://hdl.handle.net/11693/25059
dc.description.abstractSince the realization that the tips of scanning probe microscopes can interact with atoms at surfaces, there has been much interest in the possibility of building or modifying nanostructures or molecules directly from single atoms. Individual large molecules can be positioned on surfaces, and atoms can be transferred controllably between the sample and probe tip. The most complex structures are produced at cryogenic temperatures by sliding atoms across a surface to chosen sites. But there are problems in manipulating atoms laterally at higher temperatures - atoms that are sufficiently well bound to a surface to be stable at higher temperatures require a stronger tip interaction to be moved. This situation differs significantly from the idealized weakly interacting tips of scanning tunnelling or atomic force microscopes. Here we demonstrate that precise positioning of atoms on a copper surface is possible at room temperature. The triggering mechanism for the atomic motion unexpectedly depends on the tunnelling current density, rather than the electric field or proximity of tip and surface.en_US
dc.language.isoEnglishen_US
dc.source.titleNatureen_US
dc.relation.isversionofhttp://dx.doi.org/10.1038/35008030en_US
dc.subjectArticleen_US
dc.subjectAtomen_US
dc.subjectChemical structureen_US
dc.subjectElectric currenten_US
dc.subjectMolecular dynamicsen_US
dc.subjectMolecular interactionen_US
dc.subjectMolecular stabilityen_US
dc.subjectPriority journalen_US
dc.subjectTemperature sensitivityen_US
dc.titleManipulation of atoms across a surface at room temperatureen_US
dc.typeArticleen_US
dc.departmentDepartment of Physicsen_US
dc.citation.spage743en_US
dc.citation.epage745en_US
dc.citation.volumeNumber404en_US
dc.citation.issueNumber6779en_US
dc.identifier.doi10.1038/35008030en_US
dc.publisherNature Publishing Groupen_US


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