Complex Droplets on Chemically Modified Silicon Nanograss

Abstract

Dropping in. Chemically modified silicon nanograss combines nanoscale topography with lithographically defined chemical patterns. The material exhibits a high wettability gradient that allows tailoring of complex droplet shapes. The oxidized nanograss is completely wetting, while the polymer-coated nanograss has a contact angle of ca. 170° and is ultrahydrophobic. Novel droplet behavior on these surfaces is studied experimentally. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.