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Article Dans Une Revue Scientific Reports Année : 2015

Controlled mud-crack patterning and self-organized cracking of polydimethylsiloxane elastomer surfaces

Résumé

Exploiting pattern formation – such as that observed in nature – in the context of micro/nanotechnology could have great benefits if coupled with the traditional top-down lithographic approach. Here, we demonstrate an original and simple method to produce unique, localized and controllable self-organised patterns on elastomeric films. A thin, brittle silica-like crust is formed on the surface of polydimethylsiloxane (PDMS) using oxygen plasma. This crust is subsequently cracked via the deposition of a thin metal film – having residual tensile stress. The density of the mud-crack patterns depends on the plasma dose and on the metal thickness. The mud-crack patterning can be controlled depending on the thickness and shape of the metallization – ultimately leading to regularly spaced cracks and/or metal mesa structures. Such patterning of the cracks indicates a level of self-organization in the structuring and layout of the features – arrived at simply by imposing metallization boundaries in proximity to each other, separated by a distance of the order of the critical dimension of the pattern size apparent in the large surface mud-crack patterns.
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Origine : Publication financée par une institution
Licence : CC BY - Paternité

Dates et versions

hal-02345522 , version 1 (11-07-2022)

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Rian Seghir, S. Arscott. Controlled mud-crack patterning and self-organized cracking of polydimethylsiloxane elastomer surfaces. Scientific Reports, 2015, 5 (1), ⟨10.1038/srep14787⟩. ⟨hal-02345522⟩
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