Creation of a superhydrophobic surface from a sublimed smectic liquid crystal

Dae Seok Kim, Yun Jeong Cha, Hanim Kim, Mun Ho Kim, Yun Ho Kim, Dong Ki Yoon

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Dual-scale structures showing superhydrophobic characteristics have been fabricated using sublimable smectic liquid crystals (LCs). Here, toric focal conic domains (TFCDs) of smectic LCs were prepared on micron-sized square pillar patterns. And the layer by layer reconstruction of TFCDs under a thermal sublimation process was followed to form nano-scale hemi-cylinders. Based on this dual-scale roughness, the superhydrophobic surface was successfully created with a water contact angle (CA) of ∼150° and a low CA hysteresis of ∼9°. The resulting superhydrophobic surface is the first application using sublimable LCs, suggesting a new approach for potential applications in LC science and engineering. This journal is

Original languageEnglish (US)
Pages (from-to)26946-26950
Number of pages5
JournalRSC Advances
Volume4
Issue number51
DOIs
StatePublished - 2014

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