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Controlling liquid spreading using microfabricated undercut edges

Research output: Contribution to journalArticleScientificpeer-review

Details

Original languageEnglish
Pages (from-to)2275-2278
Number of pages4
JournalAdvanced Materials
Volume25
Issue number16
DOIs
Publication statusPublished - 24 Apr 2013
Publication typeA1 Journal article-refereed

Abstract

A purely topographical method for controlling liquid spreading by using easy-to-fabricate undercut edges is reported. By periodic repetition of such edges, it is shown that multiple droplets can be patterned in well-controlled shapes, and highly anisotropic wetting can also be achieved at a large scale. Apparent contact angles close to 180° at the edge are shown, even for low surface tension liquids.

Keywords

  • anisotropic wetting, contact-line pinning, surface microfluidics