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Three-dimensional microscale flow of polymer coatings on glass during indentation

Published online by Cambridge University Press:  17 October 2017

L. R. Bartell Open the ORCID record for L. R. Bartell [Opens in a new window] ,
N. Y. C. Lin ,
J. L. Lyon ,
M. L. Sorensen ,
D. A. Clark ,
M. J. Lockhart ,
J. R. Matthews ,
G. S. Glaesemann ,
M. E. DeRosa  and
I. Cohen
L. R. Bartell*
Affiliation:
School of Applied and Engineering Physics, Cornell University, Ithaca, New York, 14853, USA
N. Y. C. Lin
Affiliation:
Department of Physics, Cornell University, Ithaca, New York, 14853, USA
J. L. Lyon
Affiliation:
Corning Research and Development Corporation, Corning, New York, 14831, USA
M. L. Sorensen
Affiliation:
Corning Research and Development Corporation, Corning, New York, 14831, USA
D. A. Clark
Affiliation:
Corning Research and Development Corporation, Corning, New York, 14831, USA
M. J. Lockhart
Affiliation:
Corning Research and Development Corporation, Corning, New York, 14831, USA
J. R. Matthews
Affiliation:
Corning Research and Development Corporation, Corning, New York, 14831, USA
G. S. Glaesemann
Affiliation:
Corning Research and Development Corporation, Corning, New York, 14831, USA
M. E. DeRosa
Affiliation:
Corning Research and Development Corporation, Corning, New York, 14831, USA
I. Cohen
Affiliation:
Department of Physics, Cornell University, Ithaca, New York, 14853, USA
*
*Address all correspondence to Lena R. Bartell at [email protected]
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Abstract

We present an indentation-scope that interfaces with confocal microscopy, enabling direct observation of the three-dimensional (3D) microstructural response of coatings on substrates. Using this method, we compared microns-thick polymer coatings on glass with and without silica nanoparticle filler. Bulk force data confirmed the >30% modulus difference, while microstructural data further revealed slip at the glass-coating interface. Filled coatings slipped more and about two times faster, as reflected in 3D displacement and von Mises strain fields. Overall, these data indicate that silica-doping of coatings can dramatically alter adhesion. Moreover, this method compliments existing theoretical and modeling approaches for studying indentation in layered systems.

Type
Research Letters
Information
MRS Communications , Volume 7 , Issue 4 , December 2017 , pp. 896 - 903
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Copyright
Copyright © Materials Research Society 2017 

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