Optical and electronic characterization on polymeric membranes
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| Title: | Optical and electronic characterization on polymeric membranes |
|---|---|
| Authors: | Logothetidis, S.1, Gioti, M. mgiot@skiathos.physics.auth.gr, Gravalidis, C.1 |
| Source: | Synthetic Metals. Jun2003, Vol. 138 Issue 1/2, p369. 6p. |
| Subjects: | Polyethylene terephthalate, Ellipsometry |
| Abstract: | This work is dedicated to the optical and electronic characterization of poly(ethylene terephthalate) (PET) membranes, which are extensively used in many practical applications. Spectroscopic ellipsometry (SE) from 1.5 to 6.5 eV was applied to probe the dielectric function (ϵ(ω)) of industrially supplied PET membranes and to reveal their optical anisotropy. Two characteristic features were observed at ∼5.0 and 6.1 eV, attributed to electronic transitions occurred in specific chemical bonds of the PET macromolecule. Through the appropriate fitting analysis it was obtained the geometrical structure of the membrane; consisting of a thick amorphous layer with a crystalline-like layer on top of it, formed during treatment processes. Using Fourier transform infrared (FT–IR) SE it was also extracted the spectral dependence of the ϵ(ω) in IR energy range by taking into account the contribution of the PET’s vibrational modes, and this it was found to be in an excellent agreement with the SE results. [Copyright &y& Elsevier] |
| Copyright of Synthetic Metals is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 9856263 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Optical and electronic characterization on polymeric membranes – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Logothetidis%2C+S%2E%22">Logothetidis, S.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Gioti%2C+M%2E%22">Gioti, M.</searchLink><i> mgiot@skiathos.physics.auth.gr</i><br /><searchLink fieldCode="AR" term="%22Gravalidis%2C+C%2E%22">Gravalidis, C.</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Synthetic+Metals%22">Synthetic Metals</searchLink>. Jun2003, Vol. 138 Issue 1/2, p369. 6p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Polyethylene+terephthalate%22">Polyethylene terephthalate</searchLink><br /><searchLink fieldCode="DE" term="%22Ellipsometry%22">Ellipsometry</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This work is dedicated to the optical and electronic characterization of poly(ethylene terephthalate) (PET) membranes, which are extensively used in many practical applications. Spectroscopic ellipsometry (SE) from 1.5 to 6.5 eV was applied to probe the dielectric function (&epsiv;(ω)) of industrially supplied PET membranes and to reveal their optical anisotropy. Two characteristic features were observed at ∼5.0 and 6.1 eV, attributed to electronic transitions occurred in specific chemical bonds of the PET macromolecule. Through the appropriate fitting analysis it was obtained the geometrical structure of the membrane; consisting of a thick amorphous layer with a crystalline-like layer on top of it, formed during treatment processes. Using Fourier transform infrared (FT–IR) SE it was also extracted the spectral dependence of the &epsiv;(ω) in IR energy range by taking into account the contribution of the PET’s vibrational modes, and this it was found to be in an excellent agreement with the SE results. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Synthetic Metals is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=9856263 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/S0379-6779(02)01300-0 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 6 StartPage: 369 Subjects: – SubjectFull: Polyethylene terephthalate Type: general – SubjectFull: Ellipsometry Type: general Titles: – TitleFull: Optical and electronic characterization on polymeric membranes Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Logothetidis, S. – PersonEntity: Name: NameFull: Gioti, M. – PersonEntity: Name: NameFull: Gravalidis, C. IsPartOfRelationships: – BibEntity: Dates: – D: 02 M: 06 Text: Jun2003 Type: published Y: 2003 Identifiers: – Type: issn-print Value: 03796779 Numbering: – Type: volume Value: 138 – Type: issue Value: 1/2 Titles: – TitleFull: Synthetic Metals Type: main |
| ResultId | 1 |
