Nonsinusoidal buckling of thin gold films on elastomeric substrates
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.
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.
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.
(a) Hypothetical elastic model for tension/compression asymmetry. (b) Buckled surface profile from finite element analysis using model shown in (a).
Article metrics loading...
Full text loading...