Superhydrophobic surfaces based on self-organized TiO2-nanotubes

Wermuth, Loreen; Kolb, M.; Mertens, Tobias; Strobl, Tobias; Raps, D.

doi:10.1016/j.porgcoat.2015.05.010

Cited by 21 publications

(2 citation statements)

References 31 publications

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“…Among the several approaches that can be used to generate lotus leaf‐like structures on surfaces, [ 24–26 ] short/ultrashort (S/US) laser pulses present several advantages. The material removal takes place locally at the zone where the laser beam is interacting with the substrate and also causes a limited chemical surface modification.…”

Section: Introductionmentioning

confidence: 99%

Design Rules for Laser‐Treated Icephobic Metallic Surfaces for Aeronautic Applications

Vercillo

Tonnicchia

Romano

et al. 2020

Adv Funct Materials

138

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Ice accretion on external aircraft surfaces due to the impact of supercooled water droplets can negatively affect the aerodynamic performance and reduce the operational capability and, therefore, must be prevented. Icephobic coatings capable of reducing the adhesion strength of ice to a surface represent a promising technology to support thermal or mechanical ice protection systems. Icephobicity is similar to hydrophobicity in several aspects and superhydrophobic surfaces embody a straightforward solution to the ice adhesion problem. Short/ultrashort pulsed laser surface treatments are proposed as a viable technology to generate superhydrophobic properties on metallic surfaces. However, it has not yet been verified whether such surfaces are generally icephobic under representative icing conditions. This study investigates the ice adhesion strength on Ti6Al4V, an alloy commonly used for aerospace components, textured by means of direct laser writing, direct laser interference patterning, and laser-induced periodic surface structures laser sources with pulse durations ranging from nano-to femtosecond regimes. A clear relation between the spatial period, the surface microstructure depth, and the ice adhesion strength under different icing conditions is investigated. From these observations, a set of design rules can be defined for superhydrophobic surfaces that are icephobic, too.can reduce dramatically lift and increase drag, influencing the maneuverability of the aircraft. Ice protection systems (IPS) are installed to allow aircraft flying safely in icing conditions. At the present time, IPS are not supported by coatings or surfaces that facilitate the ice removal-due to the still too low maturity and robustness of such technological solutions. Yet, surface functionalization is a promising strategy for manufacturing icephobic surfaces [3] aiming to delay ice accretion and/ or to reduce ice adhesion [4,5] and therefore to reduce the electrical or thermal energy required by the IPS.In the last two decades, several approaches for producing icephobic surfaces were presented in literature. For example, it has been proven that polishing the surfaces can reduce the mechanical interlocking with the accreted ice, hence facilitating the ice removal. [5] Coatings can lower the surface free energy and thus reduce the strength of the bonding between ice and surface. [6] On slippery liquid-infused porous surfaces the supercooled water droplets impinge on a liquid instead of a solid surface, which offers a double advantage: interfacial slippage of water or ice occurs (nonzero slip velocity)-which reduces ice adhesion [7] -and interlocking of ice with a liquid interface cannot occur. However, employing coatings or chemicals to

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Section: Introductionmentioning

confidence: 99%

Design Rules for Laser‐Treated Icephobic Metallic Surfaces for Aeronautic Applications

Vercillo

Tonnicchia

Romano

et al. 2020

Adv Funct Materials

138

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“…These new processes have led to the evolution of a well-defined, open-porous nanostructure that improves adhesion by mechanical and chemical anchoring of organic coatings [1,9]. Two of these promising procedures are the TiO 2 -Nanotube anodizing treatment [7,10] and the plasma atmospheric pressure treatment [1,9]. However, both of these techniques require much energy.…”

Section: Introductionmentioning

confidence: 99%

Influence of surface pre-treatments on the high-cycle fatigue behavior of Ti–6Al–4V – From anodizing to laser-assisted techniques

Taube

Kurtović

Niendorf

et al. 2016

International Journal of Fatigue

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Nanotubular ZrTiO₄ Prepared on Sputter Deposited Zr−Ti Films by Anodization

Zhao

et al. 2021

ChemElectroChem

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Highly ordered nanotubular ZrTiO4 thin films were synthesized by directly anodizing co‐sputtered Zr−Ti films deposited on silicon substrates. The crystals of as‐deposited Zr−Ti films preferred (002) orientation was beneficial to the nanotubular structure formation. The adjusted anodization potential and composition of Zr−Ti films resulted in a controllable nanotube diameter that ranges from approximately 45 nm to 110 nm. The thickness of as‐deposited Zr−Ti films and growth rates determined the length of nanotubular structure (1.7–4.5 μm). The decreased Ti content in the deposited Zr−Ti films lead to a higher nanotube growth rate due to the lower binding energy of Ti and oxygen. The higher Zr content in the Zr−Ti films was responsible for the crystalized nanotubular ZrTiO4 after anodization.

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Superhydrophobic surfaces based on self-organized TiO2-nanotubes

Cited by 21 publications

References 31 publications

Design Rules for Laser‐Treated Icephobic Metallic Surfaces for Aeronautic Applications

Design Rules for Laser‐Treated Icephobic Metallic Surfaces for Aeronautic Applications

Influence of surface pre-treatments on the high-cycle fatigue behavior of Ti–6Al–4V – From anodizing to laser-assisted techniques

Nanotubular ZrTiO₄ Prepared on Sputter Deposited Zr−Ti Films by Anodization

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Superhydrophobic surfaces based on self-organized TiO2-nanotubes

Cited by 21 publications

References 31 publications

Design Rules for Laser‐Treated Icephobic Metallic Surfaces for Aeronautic Applications

Design Rules for Laser‐Treated Icephobic Metallic Surfaces for Aeronautic Applications

Influence of surface pre-treatments on the high-cycle fatigue behavior of Ti–6Al–4V – From anodizing to laser-assisted techniques

Nanotubular ZrTiO4 Prepared on Sputter Deposited Zr−Ti Films by Anodization

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Nanotubular ZrTiO₄ Prepared on Sputter Deposited Zr−Ti Films by Anodization