2012
DOI: 10.1021/la303358h
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Micro–Micro Hierarchy Replacing Micro–Nano Hierarchy: A Precisely Controlled Way To Produce Wear-Resistant Superhydrophobic Polymer Surfaces

Abstract: Superhydrophobic polymer surfaces are typically fabricated by combining hierarchical micro-nanostructures. The surfaces have a great technological potential because of their special water-repellent and self-cleaning properties. However, the poor mechanical robustness of such surfaces has severely limited their use in practical applications. This study presents a simple and swift mass production method for manufacturing hierarchically structured polymer surfaces at micrometer scale. Polypropylene surface struct… Show more

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Cited by 101 publications
(107 citation statements)
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“…[ 4 ] 2) The energetic barrier against complete wetting of the surface is often even less than the kinetic energy of falling rain droplets and, thus, the structures are neither applicable for outdoor coatings nor suitable for large immersion depths. [ 10,11 ] 3) The mechanical stability and, in particular, the resistance against shear loads by scratching [ 12,13 ] and against collapse due to capillary forces in dense arrays [ 14,15 ] are insuffi cient for nanoscopic needle or pillar structures, which limits the long-term durability of these surfaces. Inspired by the morphology of the omniphobic springtail skin [16][17][18][19] we have now introduced a reverse imprint lithographic technique to generate polymer membranes which combine superb wetting resistance and mechanical stability.…”
mentioning
confidence: 99%
“…[ 4 ] 2) The energetic barrier against complete wetting of the surface is often even less than the kinetic energy of falling rain droplets and, thus, the structures are neither applicable for outdoor coatings nor suitable for large immersion depths. [ 10,11 ] 3) The mechanical stability and, in particular, the resistance against shear loads by scratching [ 12,13 ] and against collapse due to capillary forces in dense arrays [ 14,15 ] are insuffi cient for nanoscopic needle or pillar structures, which limits the long-term durability of these surfaces. Inspired by the morphology of the omniphobic springtail skin [16][17][18][19] we have now introduced a reverse imprint lithographic technique to generate polymer membranes which combine superb wetting resistance and mechanical stability.…”
mentioning
confidence: 99%
“…During the last two decades this knowledge base has been extended to replication of micro-and nanoscale features. A wide range of applications has been explored including microfluidic devices [3,4], diffractive optical elements [5], anti-reflective surfaces [6,7], superhydrophobic surfaces [8][9][10], and functional cell culture substrates [11][12][13][14]. Commercial injection molding is routinely used to replicate features with details down to 150 nm in the case of Blu-Ray discs, while replication demonstrating lateral resolution as low as 5 nm has been demonstrated in research [15][16][17][18][19][20].…”
Section: Introductionmentioning
confidence: 99%
“…As a clean room technique, the performance is restricted in a special environment. On the contrast, the patterning method with a microworking robot [16] has no special environmental needs. The microstructuring is performed with a computer controlled microneedle, therefore the patterns with size precision are achievable on solid substrates.…”
Section: Introductionmentioning
confidence: 99%