Design and fabrication of a large-area superhydrophobic metal surface with anti-icing properties engineered using a top-down approach

Jung, Mun Yhung; Kim, Tae‐Kyung; Kim, Hokwan; Shin, Ryung; Lee, Jinhyung; Lee, Jungshin; Lee, Joon Sang; Kang, Shinill

doi:10.1016/j.apsusc.2015.06.024

Cited by 40 publications

(16 citation statements)

References 37 publications

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“…To focus on flow dynamics in the channel and avoid the entrance and exit effects, we divided the channel into two parts along the channel direction. 16 The first part of channel was filled with fluid with a fixed velocity u, and we focused the flow dynamics at the rest of the channel. The fluid was set with a fixed velocity u.…”

Section: Fluid Flow In Smooth Channelmentioning

confidence: 99%

“…Lee et al [15] has recently developed a lattice Boltzmann model to investigate the movement of droplet on stripe-patterned surfaces. Jung et al [16] also employed the lattice Boltzmann method to determine the optimal geometry of microstructures to achieve superhydrophobicity. Their simulation results were also compared with the results of measured wettability of fabricated micro-hierarchical metal surface.…”

Section: Introductionmentioning

confidence: 99%

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Lattice Boltzmann parallel simulation of microflow dynamics over structured surfaces

Zhou

Yan

Liu

et al. 2017

Advances in Engineering Software

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In the present work, a parallel lattice Boltzmann multiphase model was developed to investigate the effects of surface structures on wettabilities and flow dynamics in a microchannel. The theory of wetting transition was firstly discussed. Then three types including triangular, rectangle and hierarchical shaped microstructures were constructed on the surface to examine the effects on wettabilities and drag reduction. It was found that flow behaviour is strongly affected by the surface morphology of the channel. The results indicated that hierarchical structures on the surface could improve the hydrophobicity significantly. For rectangular structures, they can improve the hydrophobicity with the increase of height and distance ratio h/d of the structures, and the improvement will reach its optimal hydrophobicity when the value h/d is over a certain value of 0.6. Moreover, to accelerate computational speed, the Open Multi-Processing (OpenMP) was employed for the parallelization of the model. A maximum speedup of 2.95 times was obtained for 4 threads on a multi-core CPU platform.

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Section: Fluid Flow In Smooth Channelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Lattice Boltzmann parallel simulation of microflow dynamics over structured surfaces

Zhou

Yan

Liu

et al. 2017

Advances in Engineering Software

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“…Many anti-icing methods involving the application of external forces, such as mechanical, electrothermal, and pneumatic techniques, have been proposed to minimize these losses. Among these methods, the use of anti-icing surfaces has attracted considerable attention because it is a passive anti-icing method with no external load or energy consumption [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Anti‐icing polyimide thin film with microcolumns fabricated by RIE with cooling and PCVD

Shi

et al. 2021

Micro & Nano Letters

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Anti‐icing polyimide (PI) thin films are a promising anti‐icing technology for aircraft. A processing method combining reactive ion etching with cooling and plasma chemical vapour deposition is proposed to fabricate anti‐icing PI thin films with microcolumns (PI‐M). The anti‐icing performance of PI‐M was examined. The apparent contact angle (APCA) was 153° ± 1.4°, and the APCA hysteresis was 8.5° ± 0.5°. The calculated Weber number was high, and a droplet on PI‐M rebounded within 2.56 s, whereas rebounding occurred more slowly on a smooth PI surface (PI‐S). The freezing time of droplets on PI‐M was 70% longer than that on PI‐S. The average ice adhesion force on PI‐M was 42% smaller than that on PI‐S. Repeated measurements of the ice adhesion force on PI‐M demonstrated that it was stable (deviation: ±1 N). The APCA showed that PI‐M is superhydrophobic, which indicates that droplets on PI‐M were in the Cassie state. The droplet bouncing behaviour was explained in terms of horizontal force equilibrium at the interface. The anti‐icing mechanism of PI‐M was modelled using heterogeneous nucleation theory and a contact area model. The results explained the good anti‐icing performance and suggested that PI‐M may have excellent potential for anti‐icing applications.

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“…The formation of ice on these surfaces can cause system malfunctions, which results in large economic losses, or even severe accidents. One particularly attractive technique to address this problem is anti-icing coatings that modify the surface topography and inhibit the formation and accumulation of ice (Jung and others, 2015). Owing to their convenience and simplicity, the use of hydrophobic surfaces, which originate from natural microstructures such as the surfaces of lotus leaves and rose petals, is regarded as one of the most promising approaches to achieving an anti-icing coating and have frequently been applied in the above fields (Barthlott and Neinhuis, 1997; He and others, 2015).…”

Section: Introductionmentioning

confidence: 99%

Anti-icing performance of hydrophobic material used for electromechanical drill applied in ice core drilling

et al. 2020

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Using an anti-icing coating to prevent ice accretion on the drill surface is a feasible solution to address the drilling difficulties in warm ice. In this study, four types of commercially available hydrophobic coating materials were tested to evaluate their water repellency and anti-icing properties, namely, a mixture of silica and fluorocarbon resin with polytrifluoroethylene, modified Teflon, silica-based emulsion and an acrylic-based copolymer. Their water contact angles are ~107°, 101°, 114° and 95°, respectively. All these hydrophobic coatings can significantly reduce the strength of the ice adhesion within a temperature range of −10 to −30°C on a planar or curved surface. The coating of an acrylic-based copolymer, in particular, can reduce the average tensile strength and the shear strength of the ice adhesion by 87.08 and 97.11% on planar surfaces at −30°C, and by 98.06 and 96.15% on a curved surface, respectively. The main challenge in the practical application of these coatings is their durability. An acrylic-based copolymer coating will lose its water repellency performance after 140 cycles of abrasion. The shear strength of ice adhered on curved surfaces coated with this material will approach that achieved on uncoated surfaces after 11 cycles of icing and de-icing tests.

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Design and fabrication of a large-area superhydrophobic metal surface with anti-icing properties engineered using a top-down approach

Cited by 40 publications

References 37 publications

Lattice Boltzmann parallel simulation of microflow dynamics over structured surfaces

Lattice Boltzmann parallel simulation of microflow dynamics over structured surfaces

Anti‐icing polyimide thin film with microcolumns fabricated by RIE with cooling and PCVD

Anti-icing performance of hydrophobic material used for electromechanical drill applied in ice core drilling

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