Computer Methods and Experimental Measurements for Surface Effects and Contact Mechanics VIII

2007 ◽  
Keyword(s):  
Contact Mechanics ◽  
Surface Effects ◽  
Experimental Measurements ◽  
Computer Methods

scholarly journals Wrinkling of Ultrathin Polymer Films

2006 ◽  
Vol 924 ◽  
Author(s):  
Rui Huang ◽  
Christopher M. Stafford ◽  
Bryan D. Vogt
Keyword(s):  
Experimental Data ◽  
Surface Layer ◽  
Surface Properties ◽  
Polymer Films ◽  
Critical Strain ◽  
Finite Thickness ◽  
Surface Effects ◽  
Experimental Measurements ◽  
Conventional Analysis ◽  
Ultrathin Polymer Films

ABSTRACTThis 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.

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