Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.14279/1512
DC FieldValueLanguage
dc.contributor.authorConstantinides, Georgios-
dc.contributor.authorSilva, Emilio C C M-
dc.contributor.authorBlackman, Gregory S.-
dc.contributor.otherΚωνσταντινίδης, Γιώργος-
dc.date.accessioned2013-03-08T13:41:09Zen
dc.date.accessioned2013-05-17T05:22:43Z-
dc.date.accessioned2015-12-02T10:07:10Z-
dc.date.available2013-03-08T13:41:09Zen
dc.date.available2013-05-17T05:22:43Z-
dc.date.available2015-12-02T10:07:10Z-
dc.date.issued2007-06-29-
dc.identifier.citationNanotechnology, 2007, vol.18, no. 30en_US
dc.identifier.issn13616528-
dc.identifier.urihttps://hdl.handle.net/20.500.14279/1512-
dc.description.abstractInstrumented nanoindenters are commonly employed to extract elastic, plastic or time-dependent mechanical properties of the indented material surface. In several important cases, accurate determination of the indenter probe radii is essential for the proper analytical interpretation of the experimental response, and it cannot be circumvented by an experimentally determined expression for the contact area as a function of depth. Current approaches quantify the indenter probe radii via inference from a series of indents on a material with known elastic modulus (e.g., fused quartz) or through the fitting of two-dimensional projected images acquired via atomic force microscopy (AFM) or scanning electron microscopy (SEM) images. Here, we propose a more robust methodology, based on concepts of differential geometry, for the accurate determination of three-dimensional indenter probe geometry. The methodology is presented and demonstrated for four conospherical indenters with probe radii of the order of 1-10 μm. The deviation of extracted radii with manufacturer specifications is emphasized and the limits of spherical approximations are presented. All four probes deviate from the assumed spherical geometry, such that the effective radii are not independent of distance from the probe apex. Significant errors in interpretation of material behaviour will result if this deviation is unaccounted for during the analysis of indentation load-depth responses obtained from material surfaces of interest, including observation of an artificial length scale that could be misinterpreted as an effect attributable to material length scales less than tens of nanometres in size or extent.en_US
dc.formatpdfen_US
dc.language.isoenen_US
dc.relation.ispartofNanotechnologyen_US
dc.rights© IOPen_US
dc.subjectApproximation theoryen_US
dc.subjectAtomic force microscopyen_US
dc.subjectScanning electron microscopyen_US
dc.subjectMethodologyen_US
dc.subjectMolecular probesen_US
dc.titleDealing with imperfection:quantifying potential length scale artefacts from nominally spherical indenter probesen_US
dc.typeArticleen_US
dc.affiliationMassachusetts Institute of Technologyen
dc.collaborationMassachusetts Institute of Technologyen_US
dc.journalsSubscriptionen_US
dc.countryGreeceen_US
dc.subject.fieldEngineering and Technologyen_US
dc.publicationPeer Revieweden_US
dc.identifier.doi10.1088/0957-4484/18/30/305503en_US
dc.dept.handle123456789/54en
dc.relation.issue30en_US
dc.relation.volume18en_US
cut.common.academicyear2006-2007en_US
item.grantfulltextnone-
item.openairecristypehttp://purl.org/coar/resource_type/c_6501-
item.fulltextNo Fulltext-
item.languageiso639-1en-
item.cerifentitytypePublications-
item.openairetypearticle-
crisitem.author.deptDepartment of Mechanical Engineering and Materials Science and Engineering-
crisitem.author.facultyFaculty of Engineering and Technology-
crisitem.author.orcid0000-0003-1979-5176-
crisitem.author.parentorgFaculty of Engineering and Technology-
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