Far-infrared elastic scattering proposal for the Avogadro Project's silicon spheres

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dc.citation.epage179en_US
dc.citation.spage173en_US
dc.citation.volumeNumber210en_US
dc.contributor.authorHumayun, M. H.en_US
dc.contributor.authorKhan, I.en_US
dc.contributor.authorAzeem, F.en_US
dc.contributor.authorChaudhry, M. R.en_US
dc.contributor.authorGökay, U. S.en_US
dc.contributor.authorMurib, M. S.en_US
dc.contributor.authorSerpengüzel, A.en_US
dc.date.accessioned2019-02-21T16:01:47Z
dc.date.available2019-02-21T16:01:47Z
dc.date.issued2018en_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.description.abstractAvogadro constant determines the number of particles in one mole of a substance, thus relating the molar mass of the substance to the mass of this substance. Avogadro constant is related to Système Internationale base units by defining the very concept of chemical quantity. Revisions of the base units created a need to redefine the Avogadro constant, where a collaborative work called the Avogadro Project is established to employ optical interferometry to measure the diameter of high quality 100 mm silicon spheres. We propose far-infrared spectroscopy for determining the Avogadro constant by using elastic scattering from the 100 mm Avogadro Project silicon spheres. Similar spectroscopic methods are already in use in the near-infrared, relating whispering gallery modes of the 1 mm silicon spheres to the diameter of the spheres. We present numerical simulations in the far-infrared and the near-infrared, as well as spatially scaled down elastic scattering measurements in the near-infrared. These numerical and experimental results show that, the diameter measurements of 100 mm single crystal silicon spheres with elastic scattering in the far-infrared can be considered as an alternative to optical interferometry.
dc.description.provenanceMade available in DSpace on 2019-02-21T16:01:47Z (GMT). No. of bitstreams: 1 Bilkent-research-paper.pdf: 222869 bytes, checksum: 842af2b9bd649e7f548593affdbafbb3 (MD5) Previous issue date: 2018en
dc.description.sponsorshipWe would like to acknowledge the partial support of this work by the Scientific and Technological Research Council of Turkey ( TUBITAK ) project number 114F312 . M.H.H., F.A., and M.R.C. would like to acknowledge support from the Higher Education Commission (HEC) of Pakistan. We would like to thank Koç University Surface Science and Technology Center (KUYTAM) for help with scanning electron microscopy (SEM) and mass measurements of the 1 mm Si sphere.
dc.embargo.release2020-05-01en_US
dc.identifier.doi10.1016/j.jqsrt.2017.12.023
dc.identifier.issn0022-4073
dc.identifier.urihttp://hdl.handle.net/11693/49919
dc.language.isoEnglish
dc.publisherElsevier
dc.relation.isversionofhttps://doi.org/10.1016/j.jqsrt.2017.12.023
dc.relation.projectAlabama Commission on Higher Education - Higher Education Commission, Pakistan, HEC - 114F312 - Türkiye Bilimsel ve Teknolojik Araştirma Kurumu, TÜBITAK
dc.source.titleJournal of Quantitative Spectroscopy and Radiative Transferen_US
dc.subjectAvogadro constanten_US
dc.subjectAvogadro Projecten_US
dc.subjectElastic scatteringen_US
dc.subjectFar-infrared spectroscopyen_US
dc.subjectLorenz-Mie theoryen_US
dc.subjectMorphology-dependent resonancesen_US
dc.subjectNear-infrared spectroscopyen_US
dc.subjectOptical interferometryen_US
dc.subjectSilicon sphereen_US
dc.subjectTerahertz spectroscopyen_US
dc.subjectWhispering gallery modesen_US
dc.titleFar-infrared elastic scattering proposal for the Avogadro Project's silicon spheresen_US
dc.typeArticleen_US

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