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dc.contributor.authorMyhra, S
dc.contributor.authorWatson, GS
dc.date.accessioned2017-05-03T12:53:39Z
dc.date.available2017-05-03T12:53:39Z
dc.date.issued2005
dc.date.modified2010-08-20T06:27:19Z
dc.identifier.issn0947-8396
dc.identifier.doi10.1007/s00339-005-3253-x
dc.identifier.urihttp://hdl.handle.net/10072/4925
dc.description.abstractTip-induced oxidative manipulation of conducting surfaces, e.g., Si and some metals, has conventionally been described by a field-induced anodic mechanism. Likewise, in the case of electrically conducting graphitic and diamond-like carbon (DLC) films, tip-induced conversion of carbon to CO2 was initially thought to be due to an ionisation process. There is now mounting evidence for thermal activation playing an important role. The state of the tip is a critical, but largely disregarded, factor in such experiments. The present project has been prepared and characterized by I-V analysis, tips with different initial characteristics (e.g., H-termination , Au-coating, native oxide). Likewise, several surfaces have been prepared (e.g., Si plus termination by either native or thermal oxide, or plus H-termination, DLC and Au), and also subjected to I-V analysis. The resultant point-contact characteristics were found to range from ohmic to non-ohmic (the latter due to either direct or Fowler-Nordheim tunnelling). The various combinations were tested with respect to oxidative yield and tip durability. It was found that the presence of a tunnelling barrier at the point of contact is essential for enhancing yield. Tip durability, on the other hand, is promoted by the barrier being located in the surface thus localizing thermal deposition in the surface rather than in the tip.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherSpringer
dc.publisher.placeGremany
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom487
dc.relation.ispartofpageto493
dc.relation.ispartofissue3
dc.relation.ispartofjournalApplied Physics A
dc.relation.ispartofvolume81
dc.rights.retentionY
dc.subject.fieldofresearchCondensed matter physics
dc.subject.fieldofresearchAtomic, molecular and optical physics
dc.subject.fieldofresearchMaterials engineering
dc.subject.fieldofresearchcode5104
dc.subject.fieldofresearchcode5102
dc.subject.fieldofresearchcode4016
dc.titleTip-induced nano-writing/machining of Si and DLC surfaces - "anodic" versus thermal oxidation?
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.date.issued2005
gro.hasfulltextNo Full Text
gro.griffith.authorWatson, Gregory S.


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