Facile preparation of diverse alumina surface structures by anodization and superhydrophobic surfaces with tunable water droplet adhesion

A facile method to prepare rose petal-like quasi-superhydrophobic poly(lactide) (PLA) membrane surfaces with tunable water droplet adhesion properties.

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Fabrication of Novel Superhydrophobic Surfaces and Droplet Bouncing Behavior — Part 2: Water Droplet Impact Experiment on Superhydrophobic Surfaces Constructed Using ZnO Nanoparticles

Journal of Adhesion Science and Technology ◽

10.1163/016942410x501115 ◽

2011 ◽

Vol 25 (1-3) ◽

pp. 93-108 ◽

Cited By ~ 41

Author(s):

Bin-Bin Wang ◽

Ya-Pu Zhao ◽

Tongxi Yu

Keyword(s):

Zno Nanoparticles ◽

Water Droplet ◽

Droplet Impact ◽

Superhydrophobic Surfaces ◽

Impact Experiment

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Nanostructures Increase Water Droplet Adhesion on Hierarchically Rough Superhydrophobic Surfaces

Langmuir ◽

10.1021/la203155d ◽

2012 ◽

Vol 28 (6) ◽

pp. 3138-3145 ◽

Cited By ~ 85

Author(s):

Hannu Teisala ◽

Mikko Tuominen ◽

Mikko Aromaa ◽

Milena Stepien ◽

Jyrki M. Mäkelä ◽

...

Keyword(s):

Water Droplet ◽

Superhydrophobic Surfaces

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Effects of black silicon surface structures on wetting behaviors, single water droplet icing and frosting under natural convection conditions

Surface and Coatings Technology ◽

10.1016/j.surfcoat.2016.09.004 ◽

2016 ◽

Vol 307 ◽

pp. 278-286 ◽

Cited By ~ 12

Author(s):

Xiaofei Yue ◽

Weidong Liu ◽

Yuan Wang

Keyword(s):

Natural Convection ◽

Water Droplet ◽

Silicon Surface ◽

Surface Structures ◽

Black Silicon ◽

Wetting Behaviors

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Water droplet friction and rolling dynamics on superhydrophobic surfaces

Communications Materials ◽

10.1038/s43246-020-00065-3 ◽

2020 ◽

Vol 1 (1) ◽

Author(s):

Matilda Backholm ◽

Daniel Molpeceres ◽

Maja Vuckovac ◽

Heikki Nurmi ◽

Matti J. Hokkanen ◽

...

Keyword(s):

Contact Angle ◽

Friction Force ◽

Water Droplet ◽

Superhydrophobic Surfaces ◽

Silicon Surfaces ◽

Force Sensors ◽

Water Droplets ◽

Indirect Contact ◽

Gold Standard Method ◽

Superhydrophobic Coatings

Abstract Superhydrophobicity is a remarkable surface property found in nature and mimicked in many engineering applications, including anti-wetting, anti-fogging, and anti-fouling coatings. As synthetic superhydrophobic coatings approach the extreme non-wetting limit, quantification of their slipperiness becomes increasingly challenging: although contact angle goniometry remains widely used as the gold standard method, it has proven insufficient. Here, micropipette force sensors are used to directly measure the friction force of water droplets moving on super-slippery superhydrophobic surfaces that cannot be quantified with contact angle goniometry. Superhydrophobic etched silicon surfaces with tunable slipperiness are investigated as model samples. Micropipette force sensors render up to three orders of magnitude better force sensitivity than using the indirect contact angle goniometry approach. We directly measure a friction force as low as 7 ± 4 nN for a millimetric water droplet moving on the most slippery surface. Finally, we combine micropipette force sensors with particle image velocimetry and reveal purely rolling water droplets on superhydrophobic surfaces.

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