Tribological interaction between polytetrafluoroethylene and silicon oxide surfaces

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buir.contributor.authorSüzer, Şefik
buir.contributor.authorArıkan, Orhan
buir.contributor.orcidArıkan, Orhan|0000-0002-3698-8888
dc.citation.epage164702-6en_US
dc.citation.issueNumber16en_US
dc.citation.spage164702-1en_US
dc.citation.volumeNumber141en_US
dc.contributor.authorUçar, A.en_US
dc.contributor.authorÇopuroğlu, M.en_US
dc.contributor.authorBaykara, M. Z.en_US
dc.contributor.authorArıkan, Orhanen_US
dc.contributor.authorSüzer, Şefiken_US
dc.date.accessioned2016-02-08T11:03:09Z
dc.date.available2016-02-08T11:03:09Z
dc.date.issued2014en_US
dc.departmentDepartment of Chemistryen_US
dc.departmentDepartment of Mechanical Engineeringen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.description.abstractWe investigated the tribological interaction between polytetrafluoroethylene (PTFE) and silicon oxide surfaces. A simple rig was designed to bring about a friction between the surfaces via sliding a piece of PTFE on a thermally oxidized silicon wafer specimen. A very mild inclination (∼0.5°) along the sliding motion was also employed in order to monitor the tribological interaction in a gradual manner as a function of increasing contact force. Additionally, some patterns were sketched on the silicon oxide surface using the PTFE tip to investigate changes produced in the hydrophobicity of the surface, where the approximate water contact angle was 45° before the transfer. The nature of the transferred materials was characterized by X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). XPS results revealed that PTFE was faithfully transferred onto the silicon oxide surface upon even at the slightest contact and SEM images demonstrated that stable morphological changes could be imparted onto the surface. The minimum apparent contact pressure to realize the PTFE transfer is estimated as 5 kPa, much lower than reported previously. Stability of the patterns imparted towards many chemical washing processes lead us to postulate that the interaction is most likely to be chemical. Contact angle measurements, which were carried out to characterize and monitor the hydrophobicity of the silicon oxide surface, showed that upon PTFE transfer the hydrophobicity of the SiO2 surface could be significantly enhanced, which might also depend upon the pattern sketched onto the surface. Contact angle values above 100° were obtained.en_US
dc.description.provenanceMade available in DSpace on 2016-02-08T11:03:09Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 70227 bytes, checksum: 26e812c6f5156f83f0e77b261a471b5a (MD5) Previous issue date: 2014en
dc.identifier.doi10.1063/1.4898384en_US
dc.identifier.eissn1089-7690
dc.identifier.issn0021-9606
dc.identifier.urihttp://hdl.handle.net/11693/26668
dc.language.isoEnglishen_US
dc.publisherAIP Publishing LLCen_US
dc.relation.isversionofhttp://dx.doi.org/10.1063/1.4898384en_US
dc.source.titleThe Journal of Chemical Physicsen_US
dc.subjectSilicon oxide surfacesen_US
dc.subjectTribological interactionen_US
dc.titleTribological interaction between polytetrafluoroethylene and silicon oxide surfacesen_US
dc.typeArticleen_US

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