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Nonsinusoidal buckling of thin gold films on elastomeric substrates
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View: Figures


Image of FIG. 1.
FIG. 1.

Effect of Au film thickness on the buckling profile. (a) , (b) , and (c) . Left column shows the plane-view AFM images and the right column denotes the line-cut surface profile of corresponding images [blue lines in (b) and (c) are from the sinusoidal function fit]. The inset in (a) is the power spectrum of AFM image.

Image of FIG. 2.
FIG. 2.

Effect of prestrain on the buckling profile, for thick Au film on PDMS. The prestrains were 5%, 10%, 20%, 30%, and 40%, from left to right, respectively. Top panel shows AFM images, and the corresponding line-cut profiles are shown in the bottom panel.

Image of FIG. 3.
FIG. 3.

Effect of strain release rate on the buckling of thick Au film on PDMS. The prestrain was 20% for both cases, but the prestrain was released (a) instantaneously, or (b) slowly. The insets show lower magnification images by optical microscope.

Image of FIG. 4.
FIG. 4.

(a) Hypothetical elastic model for tension/compression asymmetry. (b) Buckled surface profile from finite element analysis using model shown in (a).


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Nonsinusoidal buckling of thin gold films on elastomeric substrates