Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"surface wrinkling"”.
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De-wrinkling of cellulosic barrier materials coated on paper during scale-up on a roll-to-roll system
… the fabrication process is the formation of surface wrinkles. The wrinkling instability could arise because of the mismatch strain between film and substrate, paper swelling, and external forces such as constrained edges during the coating and drying processes. This instability leads to …
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Mechanics of graded wrinkling
The properties of a surface depend on the inherent material and the surface topography. Nature uses surface texture as a means to impact different surface behavior such as cleanliness, adhesion control, drag reduction, etc. As one way to mimic nature to obtain particular surface properties, …
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A fractal analysis of premixed turbulent flames
… cutoff scale, representing the smallest scale of surface wrinkling, was determined to be approximately three and a half times the laminar flame thickness. However, for turbulence levels below three times the laminar flame speed, the inner cutoff was found to increase with decreasing turbulence. …
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Dielectric Elastomer Actuators in Electro-Responsive Surfaces Based on Tunable Wrinkling and the Robotic Arm for Powerful and Continuous Movement
… for years. Recently the DEA-based deformable surfaces have demonstrated controllable microscale roughness, ease of operation, fast response, and possibilities for programmable control. DEA muscles used in bioinspired robotic arms for large deformation and strong force also become desirable for …
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Wrinkling Patterns on Curved Surface with Gradient Curvature under Compression
<p>This work focuses on understanding the wrinkling patterns on a curved surface, i.e., tori and cones, with varying curvatures and global deformation. By tuning the geometry confine-ment and material properties, we can control the surface morphologies in these systems which can potentially be …
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Surface instabilities and interfacial phenomena for nanomanufacturing at the atomically-thin limit
… their derivative materials systems and devices. Surface instabilities (e.g. wrinkling and buckling) and interfacial phenomena (e.g. delamination) are typically deemed as engineering nuisances and failure modes. However, these universally ubiquitous phenomena can instead be harnessed to realize …