Hierarchical wrinkling patterns

Vandeparre, Hugues; Gabriele, Sylvain; Brau, Fabian; Parker, Kevin Kit; Damman, Pascal

doi:10.1039/c0sm00394h

Cited by 112 publications

(137 citation statements)

References 33 publications

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“…The data suggested that the nanoscale topography may direct fi lopodia alignment, but that micro-scale patterns may be necessary for the focal adhesions to form. [ 341 ] Engelmayr et al designed an lithography. [ 336 ] Although SMCs showed no alignment on fl at substrates, SMCs cultured on grooves were elongated and parallel to the grooves, which is more similar to their in vivo morphology.…”

Section: Reviewmentioning

confidence: 99%

Engineering of Micro‐ and Nanostructured Surfaces with Anisotropic Geometries and Properties

Tawfick¹,

Volder²,

Copic³

et al. 2012

Advanced Materials

210

179

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Widespread approaches to fabricate surfaces with robust micro- and nanostructured topographies have been stimulated by opportunities to enhance interface performance by combining physical and chemical effects. In particular, arrays of asymmetric surface features, such as arrays of grooves, inclined pillars, and helical protrusions, have been shown to impart unique anisotropy in properties including wetting, adhesion, thermal and/or electrical conductivity, optical activity, and capability to direct cell growth. These properties are of wide interest for applications including energy conversion, microelectronics, chemical and biological sensing, and bioengineering. However, fabrication of asymmetric surface features often pushes the limits of traditional etching and deposition techniques, making it challenging to produce the desired surfaces in a scalable and cost-effective manner. We review and classify approaches to fabricate arrays of asymmetric 2D and 3D surface features, in polymers, metals, and ceramics. Analytical and empirical relationships among geometries, materials, and surface properties are discussed, especially in the context of the applications mentioned above. Further, opportunities for new fabrication methods that combine lithography with principles of self-assembly are identified, aiming to establish design principles for fabrication of arbitrary 3D surface textures over large areas.

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Section: Reviewmentioning

confidence: 99%

Engineering of Micro‐ and Nanostructured Surfaces with Anisotropic Geometries and Properties

Tawfick¹,

Volder²,

Copic³

et al. 2012

Advanced Materials

210

179

View full text Add to dashboard Cite

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“…Furthermore, hierarchy is another desirable feature for surface patterns due to the synergic effects of hierarchical structures across multiple length scales. [10, 23–27] …”

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confidence: 99%

Harnessing Localized Ridges for High‐Aspect‐Ratio Hierarchical Patterns with Dynamic Tunability and Multifunctionality

et al. 2013

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We invent a simple method for fabricating high-aspect-ratio, hierarchical and dynamically tunable surface patterns by harnessing localized-ridge instabilities in gold nanofilms coated on elastomer substrates (a); develop a theoretical model to calculate the critical parameters (e.g. wavelength and amplitude) for designing the new patterns (b); and demonstrate novel applications of the patterns as super-hydrophobic coatings (c) and biomimetic cell-culture substrates (d) capable of on-demand tunability.

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“…For example, a wrinkling instability can be triggered in a thin elastic sheet under uniaxial extension [21][22][23], and a meniscus instability can occur when a thin layer of elastic material is confined and pulled in the out-of-plane direction resulting in a periodic array of fingers at its edges [24,25]. Moreover, it is well-known that a cavity can undergo a sudden expansion upon reaching a critical internal pressure.…”

mentioning

confidence: 99%