The Influence of Structure Heights and Opening Angles of Micro- and Nanocones on the Macroscopic Surface Wetting Properties

Scientific Reports
Ling SchneiderRafael Taboryski

Abstract

We discuss the influence of surface structure, namely the height and opening angles of nano- and microcones on the surface wettability. We show experimental evidence that the opening angle of the cones is the critical parameter on sample superhydrophobicity, namely static contact angles and roll-off angles. The textured surfaces are fabricated on silicon wafers by using a simple one-step method of reactive ion etching at different processing time and gas flow rates. By using hydrophobic coating or hydrophilic surface treatment, we are able to switch the surface wettability from superhydrophilic to superhydrophobic without altering surface structures. In addition, we show examples of polymer replicas (polypropylene and poly(methyl methacrylate) with different wettability, fabricated by injection moulding using templates of the silicon cone-structures.

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Citations

May 12, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Nikolaj Kofoed Mandsberg, Rafael Taboryski
Sep 12, 2018·Chemical Communications : Chem Comm·Pan TianZhiguang Guo
Apr 16, 2020·Micromachines·Oscar Pérez-Díaz, Enrique Quiroga-González
Nov 15, 2018·Micromachines·An Eng LimRafael Taboryski
Jun 3, 2021·ACS Applied Materials & Interfaces·S Farzad AhmadiJonathan B Boreyko
Jun 10, 2021·Nature Communications·Pierre LecointreDavid Quéré
Aug 10, 2021·Advanced Science·Lingyu SunYuanjin Zhao
Dec 22, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Lucas D C CastroLuiz A Pessan

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Methods Mentioned

BETA
scanning electron microscopy
AFM
atomic force microscopy

Software Mentioned

Zeiss
Image J

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