Capillary force restoration of droplet on superhydrophobic ribbed nano-needles arrays

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Qinwen Chen
  • Liang Xu
  • Qikai Li
  • Yanlin Song
  • Lei Jiang

Detail(s)

Original languageEnglish
Pages (from-to)2470-2474
Journal / PublicationSoft Matter
Volume6
Issue number11
Publication statusPublished - 7 Jun 2010
Externally publishedYes

Abstract

Previous experiments have observed squeezing and relaxing droplets between two identical superhydrophobic surfaces decorated by the ribbed nano-needles arrays (RNNA) leading to a fully reversible dynamic process. This reversibility presents a capillary force restoration accompanying deformation of the water droplet, which mainly depends on the surface microstructures. Based on the quasi-static equilibrium of droplet compression, we have deduced and numerically computed the capillary force utilizing a classical mechanics approach. The simulated forces agree well with the experimental results. The restoration mechanism is further explored and revealed by the calculated microscopic contact angle and the liquid-air interface around the nanoneedles. © 2010 The Royal Society of Chemistry.

Citation Format(s)

Capillary force restoration of droplet on superhydrophobic ribbed nano-needles arrays. / Chen, Qinwen; Yao, Xi; Xu, Liang; Li, Qikai; Song, Yanlin; Jiang, Lei.

In: Soft Matter, Vol. 6, No. 11, 07.06.2010, p. 2470-2474.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review