Multifunctional wettability patterns prepared by laser processing on superhydrophobic TiO<sub>2</sub>nanostructured surfaces

Abstract

A novel femtosecond laser patterning technique is reported to construct a three-dimensional (3D) wettability pattern on a superhydrophobic TiO<sub>2</sub> nanotube array (TNA) surface in one-step. A 3D binary TNA pattern with extremely high contrast for microfluidic manipulators and biomedical scaffolds is used to guide droplet transportation and human mesenchymal stem cell site-selective growth, respectively.

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