A superoleophobic surface with anisotropic flow of hexadecane droplets
| Autor: | Younghak Cho, Dong-Ki Lee, Eun-Haeng Lee |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
02 engineering and technology Hexadecane 010402 general chemistry 01 natural sciences Physics::Fluid Dynamics Surface tension Contact angle chemistry.chemical_compound Optics Wafer Electrical and Electronic Engineering Composite material Anisotropy business.industry 021001 nanoscience & nanotechnology Condensed Matter Physics Ridge (differential geometry) Computer Science::Other 0104 chemical sciences Electronic Optical and Magnetic Materials Hysteresis chemistry Hardware and Architecture Wetting 0210 nano-technology business |
| Zdroj: | Microsystem Technologies. 23:421-427 |
| ISSN: | 1432-1858 0946-7076 |
| DOI: | 10.1007/s00542-016-2945-9 |
| Popis: | In this paper, a grooved mushroom structured surface, with superoleophobicity and anisotropic flow of hexadecane with a low surface tension is reported. The grooved mushroom structure was fabricated using a simple and cost-effective wet etching process on Si wafer. The wetting properties of the fabricated surface were studied through static contact angle (CA), contact angle hysteresis (CAH), and tilted angle measurements in the parallel and orthogonal directions. The maximum static CA of hexadecane droplets was 159° in the parallel direction and 142° in the orthogonal direction, respectively. The results from the CAH measurements indicated that the wetting and flow on the grooved mushroom structure were anisotropic. Furthermore, it was verified experimentally that the ridge height and distance between the top layers were key to determining the oleophobicity and anisotropic flow. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink