Tunable Contact Angle Hysteresis for Component Placement on Stretchable Superhydrophobic Surfaces

Abstract

COMMUNICATION (1 of 7)To achieve the right properties, it was soon realized that the liquid/surface interaction is not only linked to surface chemistry but is also dependent on the surface topology. Multiple length scales of roughness coupling microstructures to increase the mechanical robustness with nano texturing to retard full penetration of liquid is found in lots of natural surfaces. [5] By controlling the surface micro/nano topology it is also possible to obtain surfaces displaying a wetting gradient or areas with distinctive wetting properties. [27,28] One way of creating geometrical patterns on surfaces is with the help of photolithography [7,8] but this has the drawback of being accomplished through expensive equipment and processes. Recently instabilities that can appear in soft materials, especially wrinkled surfaces, have been demonstrated to be a reliable and easy method to fabricate patterned surfaces. [29][30][31][32][33] Yang suggests strategies to control the wrinkle pattern topology and characteristic wavelength,

Nature-Inspired and “Water-Skating” Paper and Polyester Substrates Enabled by the Molecular Structure of Poly(γ-stearyl-α,l-glutamate) Homopolypeptide

“…These features are a consequence of dual-scale architecture of the material surface. A variety of methods have been used to achieve this prerequisite topology: simple modification of the substrate by plasma technology, electrochemical etching to increase roughness, use of inorganic and organic coatings, and combinations of these approaches. − …”