Local viscosity probed by photonic force microscopy.
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| Title: | Local viscosity probed by photonic force microscopy. |
|---|---|
| Authors: | Pralle, A., Florin, E.-L., Stelzer, E.H.K., Hörber, J.K.H. |
| Source: | Applied Physics A: Materials Science & Processing. 1998, Vol. 66 Issue 7, pS71. 1p. |
| Subjects: | Brownian motion, Styrene, Diffusion, Viscosity |
| Abstract: | Abstract. The Brownian motion of 0.5 micro m and 1 micro m polystyrene spheres used as probes for a photonic force microscope is recorded at various distances from a surface with nanometer spatial and 25 micro s temporal resolution. Analyzing time-windows of 0.4s of the Brownian motion, the diffusion constant and local viscosity are determined. Using 0.5 micro m spheres the viscosity can be measured in volumes as small as 1 micro m[sup 3] with +/- 15% precision within 0.4 s. The decrease of the diffusion coefficient due to the partial confinement near a surface is measured continuously over sphere-surface separations from 3 micro m down to 200 nm. The increase in viscous drag is found to agree with Brenner's analytical result [1]. [ABSTRACT FROM AUTHOR] |
| Copyright of Applied Physics A: Materials Science & Processing is the property of Springer Nature 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 |
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| Header | DbId: egs DbLabel: Engineering Source An: 4733794 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Local viscosity probed by photonic force microscopy. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Pralle%2C+A%2E%22">Pralle, A.</searchLink><br /><searchLink fieldCode="AR" term="%22Florin%2C+E%2E-L%2E%22">Florin, E.-L.</searchLink><br /><searchLink fieldCode="AR" term="%22Stelzer%2C+E%2EH%2EK%2E%22">Stelzer, E.H.K.</searchLink><br /><searchLink fieldCode="AR" term="%22Hörber%2C+J%2EK%2EH%2E%22">Hörber, J.K.H.</searchLink> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Applied+Physics+A%3A+Materials+Science+%26+Processing%22">Applied Physics A: Materials Science & Processing</searchLink>. 1998, Vol. 66 Issue 7, pS71. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Brownian+motion%22">Brownian motion</searchLink><br /><searchLink fieldCode="DE" term="%22Styrene%22">Styrene</searchLink><br /><searchLink fieldCode="DE" term="%22Diffusion%22">Diffusion</searchLink><br /><searchLink fieldCode="DE" term="%22Viscosity%22">Viscosity</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Abstract. The Brownian motion of 0.5 micro m and 1 micro m polystyrene spheres used as probes for a photonic force microscope is recorded at various distances from a surface with nanometer spatial and 25 micro s temporal resolution. Analyzing time-windows of 0.4s of the Brownian motion, the diffusion constant and local viscosity are determined. Using 0.5 micro m spheres the viscosity can be measured in volumes as small as 1 micro m[sup 3] with +/- 15% precision within 0.4 s. The decrease of the diffusion coefficient due to the partial confinement near a surface is measured continuously over sphere-surface separations from 3 micro m down to 200 nm. The increase in viscous drag is found to agree with Brenner's analytical result [1]. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Applied Physics A: Materials Science & Processing is the property of Springer Nature 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.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s003390051102 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: S71 Subjects: – SubjectFull: Brownian motion Type: general – SubjectFull: Styrene Type: general – SubjectFull: Diffusion Type: general – SubjectFull: Viscosity Type: general Titles: – TitleFull: Local viscosity probed by photonic force microscopy. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Pralle, A. – PersonEntity: Name: NameFull: Florin, E.-L. – PersonEntity: Name: NameFull: Stelzer, E.H.K. – PersonEntity: Name: NameFull: Hörber, J.K.H. IsPartOfRelationships: – BibEntity: Dates: – D: 02 M: 06 Text: 1998 Type: published Y: 1998 Identifiers: – Type: issn-print Value: 09478396 Numbering: – Type: volume Value: 66 – Type: issue Value: 7 Titles: – TitleFull: Applied Physics A: Materials Science & Processing Type: main |
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