Claudia Marschelke (PhD student)
Madeleine Schwarzer (PhD student)
Sandra Marx (Scientific co-worker)
Control and understanding of surface and interfacial phenomena is very important for the design of materials with defined wetting properties. There are two main factors, which affect surface wettability: surface roughness and intrinsic hydrophobicity/hydrophilicity of a material. Cassie and Wenzel were the first who discussed influence of these two factors on wetting and found that roughness “enhances” intrinsic wetting properties of materials and makes hydrophilic/hydrophobic materials even more hydrophilic/hydrophobic, respectively. In fact, the combination of surface roughness and hydrophobicity renders lotus leaves the ultrahydrophobicity.
Different approaches including plasma treatment, etching, sol-gel, photolithography etc were recently explored for preparation of ultrahydrophobic self-cleaning materials. These methods, however, can hardly be applied for large-scale fabrication. On the other hand, hydrophobic colloidal particles can easily be used to coat large areas and are already applied for the fabrication of self-cleaning surfaces.
- Multipurose ultra and superhydrophobic surfaces based on oligodimethylsiloxane-modified nanosilica more ACS Applied Materials & Interfaces 6 (2014) 18998-19010
- Self-healing superhydrophobic materials more Physical Chemistry, Chemical Physics 14 (2012) 10497-10502
- Engineering of ultra-hydrophobic functional coatings using controlled aggregation of bicomponent core/shell janus particles more Advanced Functional Materials 21 (2011) 2338-2344
- Water-Repellent Textile via Decorating Fibers with Amphiphilic Janus Particles more ACS Applied Materials & Interfaces 3 (2011) 1216-1220
- Wetting on fractal superhydrophobic surfaces from "core-shell" particles : A comparison of theory and experiment more Langmuir 25 (2009) 3132-3136
- Wetting on regularly structured surfaces from "Core-Shell" particles: Theoretical predictions and experimental findings more Langmuir 24 (2008) 11895-11901