How to treat a glass capillary to be superhydrophobic inside?

08 March 2025 1 7K Report

I want to have an glass capillary with its inner surface to be superhydrophobic. The inner diameter should be ~0.1mm or at least less than 1mm.Treatment by particle coating causes clogging. Spray coating also doesn't work here. Is there any method to make it? Keep the capillary to be transparent if possible. Thanks!

Yuri Mirgorod

Xing Huang

You need to use the capillary pressure effect. Capillary pressure depends on the curvature of the surface and surface tension. This relationship is described by Laplace's law. It is necessary to select the appropriate composition.

Article Супергидрофобные материалы и покрытия: обзор

An example of our use of a capillary

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