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Wrinkling of Ultrathin Polymer Films

Published online by Cambridge University Press:  01 February 2011

Rui Huang ,
Christopher M. Stafford  and
Bryan D. Vogt
Rui Huang
Affiliation:
[email protected], University of Texas at Austin, Aerospace Engineering and Engineering Mechanics, 1 University Station, C0600, Austin, Texas, 78712, United States
Christopher M. Stafford
Affiliation:
[email protected], National Institute of Standards and Technology, Polymers Division, Gaithersburg, MD, 20899, United States
Bryan D. Vogt
Affiliation:
[email protected], National Institute of Standards and Technology, Polymers Division, Gaithersburg, MD, 20899, United States
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Abstract

This paper presents a bilayer model to account for surface effects on the wrinkling of ultrathin polymer films. Assuming a surface layer of finite thickness, effects of surface properties on the critical strain, the equilibrium wavelength, and the wrinkle amplitude are discussed in comparison with conventional analysis. Experimental measurements of wrinkling in polymer films with thickness ranging from 200 nm to 5 nm are conducted. The bilayer model provides a consistent understanding of the experiments that deviate from conventional analysis for thickness less than 30 nm. A set of empirical surface properties is deduced from the experimental data.

Keywords

polymerelastic propertiesnanoscale
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 924: Symposium Z – Mechanics of Nanoscale Materials and Devices , 2006 , 0924-Z04-10
Copyright
Copyright © Materials Research Society 2006

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