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EnglishIn this paper, we present an inexpensive technique to produce superhydrophobic surfaces from porous silicon. Superhydrophobic surfaces are a key technology for their ability to reduce friction losses in microchannels and their self cleaning properties. The morphology of a p-type silicon wafer is modified by a electrochemical wet attack to produce pores with controlled size and distribution and coated with a n-alkysilane self assembled monolayer. Large contact angles are observed on such surfaces and the results are compared with classical wetting models (Cassie and Wenzel) suggesting a mixed Wenzel-Cassie behaviour. The presented technique represents a cost-effective means for friction reduction in microfluidic applications, such as lab-on-a-chip.
Superhydrophobic porous silicon surfaces / BALUCANI, Marco; G., Bolognesi; CASCIOLA, Carlo Massimo; M., Chinappi; GIACOMELLO, ALBERTO; NENZI, Paolo. - 2:(2011), pp. 493-496. ((Intervento presentato al convegno Nanotechnology 2011: Electronics, Devices, Fabrication, MEMS, Fluidics and Computational - 2011 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2011 tenutosi a Boston; United States nel 13 June 2011 through 16 June 2011.
| Titolo: | Superhydrophobic porous silicon surfaces | |
| Autori: | ||
| Data di pubblicazione: | 2011 | |
| Citazione: | Superhydrophobic porous silicon surfaces / BALUCANI, Marco; G., Bolognesi; CASCIOLA, Carlo Massimo; M., Chinappi; GIACOMELLO, ALBERTO; NENZI, Paolo. - 2:(2011), pp. 493-496. ((Intervento presentato al convegno Nanotechnology 2011: Electronics, Devices, Fabrication, MEMS, Fluidics and Computational - 2011 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2011 tenutosi a Boston; United States nel 13 June 2011 through 16 June 2011. | |
| Handle: | http://hdl.handle.net/11573/380126 | |
| ISBN: | 9781439871393 | |
| Appartiene alla tipologia: | 04b Atto di convegno in volume |
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