Micro-and nanostructured silicon-based superomniphobic surfaces

Nguyen, Thi Phuong Nhung; Boukherroub, Rabah; Thomy, V.; Coffinier, Yannick

doi:10.1016/j.jcis.2013.10.065

Cited by 31 publications

(15 citation statements)

References 46 publications

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“…ZnO nanoparticles coating could lead to three-dimensional structural patterns in micro-and nanoscale to form a hierarchical roughness on cellulosic surface. This specific morphology was believed to be more effective in creating air pockets [37] and increasing the water contact angles of the cellulose materials [38].…”

Section: Resultsmentioning

confidence: 99%

Functional Surface Coating on Cellulosic Flexible Substrates with Improved Water-Resistant and Antimicrobial Properties by Use of ZnO Nanoparticles

Tian

Wan

et al. 2017

Journal of Nanomaterials

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It is of significant interest to create functional flexible surfaces that simultaneously exhibit high water-resistance and antimicrobial performances for medical or packaging applications. This study reported a synthesis of functional surface coating on flexible cellulose materials (filter papers) with ZnO nanoparticles and binds of renewable soybean oil-based polymers. Self-aggregation of ZnO nanoparticles could form ZnO particles with two regular morphological patterns. Rather than a rod-like morphology, a flower-like ZnO benefited a promotion of surface hydrophobicity. Moreover, surface with the flower-like ZnO showed a 51.6% promotion on antimicrobial activities against Gram-negative bacteria (E. coli) than the rod-like ZnO. A low binder/ZnO ratio of 0.2 led to a remarkable improvement on water repelling performances without negative effects on a coating adhesion of ZnO. Under this condition, a hydrophobic surface was achieved with a large static contact angle of 138° when applying ZnO nanoparticles at a dosage of 3 g m−2.

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Section: Resultsmentioning

confidence: 99%

Functional Surface Coating on Cellulosic Flexible Substrates with Improved Water-Resistant and Antimicrobial Properties by Use of ZnO Nanoparticles

Tian

Wan

et al. 2017

Journal of Nanomaterials

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“…Currently, most existing liquid-repellent surfaces make use of dual-scale surface roughness consisting of nanoscale features superposed on micron-sized textures [13,14,[20][21][22][23]. In this research, however, we describe a facile fabrication method to produce higher-level multiscale roughness, at least up to four length scales.…”

Section: Introductionmentioning

confidence: 99%

“…These advancements in terms of liquid-repellent coating open many avenues for novel applications [15][16][17][18]. However, a majority of the studies so far has been confined within the regime of pure liquids [19][20][21][22][23] or dilute polymer solutions [14]. There are only a few articles discussing surfaces that can effectively repel complex fluids [24], especially those with viscoelastic behaviors, such as natural latex.…”

Section: Introductionmentioning

confidence: 99%

Extreme Wetting-Resistant Multiscale Nano-/Microstructured Surfaces for Viscoelastic Liquid Repellence

Chunglok

Muensit

Daengngam

2016

Journal of Nanomaterials

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We demonstrate exceptional wetting-resistant surfaces capable of repelling low surface tension, non-Newtonian, and highly viscoelastic liquids. Theoretical analysis and experimental result confirm that a higher level of multiscale roughness topography composed of at least three structural length scales, ranging from nanometer to supermicron sizes, is crucial for the reduction of liquid-solid adhesion hysteresis. With Cassie-Baxter nonwetting state satisfied at all roughness length scales, the surface has been proven to effectively repel even highly adhesive liquid. Practically, this high-level hierarchical structure can be achieved through fractal-like structures of silica aggregates induced by siloxane oligomer interparticle bridges. The induced aggregation and surface functionalization of the silica particles can be performed simultaneously within a single reaction step, by utilizing trifunctional fluoroalkylsilane precursors that largely form a disordered fluoroalkylsiloxane grafting layer under the presence of sufficient native moisture preadsorbed at the silica surface. Spray-coating deposition of a particle surface layer on a precoated primer layer ensures facile processability and scalability of the fabrication method. The resulting low-surface-energy multiscale roughness exhibits outstanding liquid repellent properties, generating equivalent lotus effect for highly viscous and adhesive natural latex concentrate, with apparent contact angles greater than 160°, and very small roll-off angles of less than 3°.

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“…The most well-known example of biomimetic surface engineering is the superhydrophobic lotus-like surface which presents self-cleaning abilities in certain conditions, due to its particular wetting regime (Yan et al, 2011). Numerous papers indeed report different methods to design synthetic superhydrophobic surfaces through cutting-edge technologies, such as structure growth (Coffinier et al, 2007;Nguyen et al, 2014;Verplanck et al, 2007), lithography (Bixler et al, 2014) often coupled with dry or wet etching, vacuum plasma treatments (Jung and Bhushan, 2009), layer-by-layer deposition (Bravo et al, 2007), sol-gel processes (Mahltig and Böttcher, famous lotus-like surface, the tunable wettability of gecko toes (Liu et al, 2012) as well as the segregated hydrophilicity/hydrophobicity of Salvinia leaves (Barthlott et al, 2010) are also worth to be reported, as they have also been studied and mimicked to design functional surfaces. Overall, biomimicry offers multiple possibilities that could be integrated in research strategies aiming at fouling management.…”

Section: Introductionmentioning

confidence: 99%

Biomimetic surface modifications of stainless steel targeting dairy fouling mitigation and bacterial adhesion

Zouaghi

Bellayer

Thomy

et al. 2019

Food and Bioproducts Processing

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This work aims at presenting and comparing the antifouling and antibacterial behaviour of three biomimetic surfaces targeting dairy fouling reduction, namely atmospheric plasmasprayed silane-based thin films, lubricated slippery surfaces and femtosecond laser textured lotus-like surfaces. Fouling tests were conducted on a pilot-scale pasteurization plant fed with a model whey protein and calcium foulant solution and tested samples were placed in isothermal holding-like conditions. Detailed characterizations of the substrates before and after fouling test allowed connecting their surface properties to their antifouling performances. The best result was obtained with the nano-rough plasma coatings which led to a substantial fouling reduction for two consecutive pasteurisation runs. These surfaces were subsequently tested towards bacterial adhesion with three different foodborne pathogenic strains, again demonstrating better performances than bare stainless steel.

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Micro-and nanostructured silicon-based superomniphobic surfaces

Cited by 31 publications

References 46 publications

Functional Surface Coating on Cellulosic Flexible Substrates with Improved Water-Resistant and Antimicrobial Properties by Use of ZnO Nanoparticles

Functional Surface Coating on Cellulosic Flexible Substrates with Improved Water-Resistant and Antimicrobial Properties by Use of ZnO Nanoparticles

Extreme Wetting-Resistant Multiscale Nano-/Microstructured Surfaces for Viscoelastic Liquid Repellence

Biomimetic surface modifications of stainless steel targeting dairy fouling mitigation and bacterial adhesion

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