Confinement of water droplets on rectangular micro/nano-arrayed surfaces

Ondřej Kašpar, Hailong Zhang, Viola Tokárová, Reinhard Boysen, Gemma Rius Suñé, Xavier Borrise, Francesco Perez-Murano, Milton T W Hearn, Dan V Nicolau

Research output: Contribution to journalArticleResearchpeer-review

6 Citations (Scopus)

Abstract

Micro-patterned surfaces with alternate hydrophilic and hydrophobic rectangular areas effectively confine water droplets down to attolitre volumes. The contact angle, volume, and geometry of the confined droplets as a function of the geometry and physico-chemical properties of the confining surfaces have been determined by phenomenological simulations, validated by atomic force microscopy measurements. The combination between experiments and simulations can be used for the purposeful design of arrays with surface-addressable hydrophobicity employed in digital microfluidics and high-throughput screening nanoarrays.

Original languageEnglish
Pages (from-to)2487-2493
Number of pages7
JournalLab on a Chip
Volume16
Issue number13
DOIs
Publication statusPublished - 2016

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