Wetting

Wetting is the ability of a liquid to spread over a solid surface. The degree of wetting is called wettability, and is determined by a force balance between the cohesive forces of the liquid and the adhesive forces between the surface and the liquid.

Latest Research and Reviews

  • Research
    | Open Access

    Droplet self-propulsion on surfaces with wetting gradients is relevant for wide-ranging practical applications, and such motion is typically unidirectional. Here, the authors show how bidirectional motion of droplets can be achieved and controlled on liquid-infused surfaces with texture gradients.

    • Muhammad Subkhi Sadullah
    • , Gaby Launay
    • , Jayne Parle
    • , Rodrigo Ledesma-Aguilar
    • , Yonas Gizaw
    • , Glen McHale
    • , Gary George Wells
    •  & Halim Kusumaatmaja
  • Research
    | Open Access

    Hydrophobic coatings are increasingly important in modern technology, but hard to study in the extreme non-wetting limit. Here, micropipette force sensors can directly measure nN-scale friction forces and, combined with particle image velocimetry, reveal pure rolling dynamics of slow water droplets.

    • Matilda Backholm
    • , Daniel Molpeceres
    • , Maja Vuckovac
    • , Heikki Nurmi
    • , Matti J. Hokkanen
    • , Ville Jokinen
    • , Jaakko V. I. Timonen
    •  & Robin H. A. Ras
  • Research |

    Perfluorochemicals render fabrics water and oil repellent; however, their use poses environmental and health risks. Here, the authors show the rational design of textile finishes with excellent oil repellency without adopting any perfluorinated substances.

    • Sadaf Shabanian
    • , Behrooz Khatir
    • , Ambreen Nisar
    •  & Kevin Golovin
  • Research |

    Water-repellent nanostructures are housed within an interconnected microstructure frame to yield mechanically robust superhydrophobic surfaces.

    • Dehui Wang
    • , Qiangqiang Sun
    • , Matti J. Hokkanen
    • , Chenglin Zhang
    • , Fan-Yen Lin
    • , Qiang Liu
    • , Shun-Peng Zhu
    • , Tianfeng Zhou
    • , Qing Chang
    • , Bo He
    • , Quan Zhou
    • , Longquan Chen
    • , Zuankai Wang
    • , Robin H. A. Ras
    •  & Xu Deng
    Nature 582, 55-59

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