Superhydrophobic (low adhesion) and parahydrophobic (high adhesion) surfaces with micro/nanostructures or nanofilaments

Diouf, Alioune; Darmanin, Thierry; Dieng, Samba Yandé; Guittard, Frédéric

doi:10.1016/j.jcis.2015.04.046

Cited by 22 publications

(22 citation statements)

References 46 publications

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“…For example, superhydrophobic properties were reported by using fluorinated or hydrocarbon chains . Parahydrophobic properties were also reported using substituents of lower hydrophobicity such as branched hydrocarbon chains or aromatic cycles …”

Section: Introductionmentioning

confidence: 99%

“…[35,36,38] Parahydrophobic properties were also reported using substituents of lower hydropho-bicity such as branched hydrocarbon chains or aromatic cycles. [39][40][41] In order to enhancet he surfacew ettability properties, textured substrates such as membranes and textile fabrics can be used. In particular, meshes are excellent candidates due to their homogeneity,t he possibility to easily vary the wire diameter and spacer, as wella st he presence of air between the wires, which is important in the Cassie-Baxtere quation.…”

Section: Introductionmentioning

confidence: 99%

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Control over Water Adhesion on Nanostructured Parahydrophobic Films Using Mesh Substrates

et al. 2015

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Controlo ver water adhesion is extremely necessary for many applications in water harvesting, liquid transportation, and water/oil separation, for example. Inspiredb y natural speciess uch as rose petals and gecko feet, these properties can be controlled with the topography of surface structures. Here, we report for the first time the electrodeposition of sticking conductingp olymers forming nanofilaments or nanosheets on textured mesh substrates. We show that the presence of mesh textures can reduce the water adhesion,a lthough the adhesion still remains relativelyh igh. This is probably due to ah igh amount of air between the mesh wires and al ow amount of air on them. Moreover,i ti s also possible to control the water adhesion with the mesh openingo rb ym odifying the shape of the nanostructures. This work opens news trategies for the control of water adhesion.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Control over Water Adhesion on Nanostructured Parahydrophobic Films Using Mesh Substrates

et al. 2015

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“…The surface contains large aggregates of fibers and appears rougher. Indeed, the electrodeposition process is highly dependent on the electrochemical conditions but also on the monomer chemical structure [26]. These results explain the differences in wettability for post and ante-treatment modification.…”

Section: Surface Properties and Discussionmentioning

confidence: 96%

Staudinger Vilarassa reaction: A powerful tool for surface modification and superhydrophobic properties

Godeau

Darmanin

2015

Journal of Colloid and Interface Science

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“…Modulation of water adhesion is important for various applications such as water harvesting and no loss transport of liquid microdroplet . Such surfaces with tunable adhesion can be fabricated by adjusting the chemical composition and/or by changing the surface topography .…”

Section: Introductionmentioning

confidence: 99%

“…[13] Modulation of water adhesion is important for various applications such as water harvesting and no loss transport of liquid microdroplet. [14,15] Such surfaces with tunable adhesion can be fabricated by adjusting the chemical composition and/ or by changing the surface topography. [4,[16][17][18] Bhushan et al have reported artificial superhydrophobic surfaces with high and low adhesion using two-steps molding process followed by a wax evaporation method.…”

Section: Introductionmentioning

confidence: 99%

Wetting Transition from Lotus Leaf to Rose Petal using Modified Fly Ash

2019

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We present a facile and scalable approach to develop lotus leaf as well rose petal like superhydrophobic surfaces using fly ash (an industrial waste obtained from the burning of coal). To achieve this, as‐obtained fly ash powder with wide particle size distribution (FA) was processed through sedimentation technique to obtain fly ash powder with narrower particle size distribution (FAS) and modified with two different concentrations of stearic acid (SA) and treated at two different temperatures – one each below and above melting point of SA. All samples showed superhydrophobicity, where, the water contact angle (WCA) increased with an increase in the amount of stearic acid and modification temperature. Interestingly, the water droplets roll‐off from the modified FA surfaces at a small tilting angle of 5° similar to the lotus leaf, whereas, the modified FAS surfaces exhibited high adhesion for water droplets even when inverted, as in case of the rose petal. It was seen that drying at temperature lower than melting temperature of stearic acid introduced additional roughness, yet the WCA decreased. This is investigated to understand the effect of topology and substrate nature on WCA in different wetting states.

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Superhydrophobic (low adhesion) and parahydrophobic (high adhesion) surfaces with micro/nanostructures or nanofilaments

Cited by 22 publications

References 46 publications

Control over Water Adhesion on Nanostructured Parahydrophobic Films Using Mesh Substrates

Control over Water Adhesion on Nanostructured Parahydrophobic Films Using Mesh Substrates

Staudinger Vilarassa reaction: A powerful tool for surface modification and superhydrophobic properties

Wetting Transition from Lotus Leaf to Rose Petal using Modified Fly Ash

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