Design and fabrication of robust super hydrophobic/hydrophilic surfaces and their application in the realization of smart microfluidic valves


The study and fabrication of superhydrophobic surfaces is a field of intensive research in the last decade, due to the implementation of such surfaces in applications ranging from self-cleaning surfaces to microfluidic devices. Recently, interest has also grown for superoleophobic surfaces repelling oils, or other lower surface-tension liquids. In some cases, micro and nano structured surfaces can repel both water and oil leading to superamphiphobic surfaces.

The aim of the proposed work is the design and fabrication of superhydrophobic and superhydrophilic surfaces on polymer substrates and ultimately their integration in "smart" microfluidic devices. Specifically, mechanically and thermodynamically stable superhydrophobic surfaces as well as superhydrophilic surfaces of optimum stability in time will be designed and fabricated, which will be incorporated and serve as interior surfaces of microfluidic devices, allowing flow control (On/Off) without using moving parts. The design and fabrication will be made such that superamphiphobic and superamphiphilic surfaces result.

For achieving the project objectives, three (3) research teams with complementary expertise collaborate on the proposed work organized in six (6) workpackages (WP), which include:

  1. Computational analysis for designing the surface micro and nanotopography targeting robust superamphiphobicity, such that the Cassie state is favoured over the Wenzel state.
  2. Fabrication of stable ordered and/or random superamphiphobic and superamphiphilic surfaces based on lithography and/or colloidal-self assembly, plasma etching / roughening and deposition. These technologies are selected due to their amenability for mass production and suitability for microfluidics.
  3. Testing of the robustness and stability of such surfaces and ranking in order of performance for water and oils.
  4. Incorporation of such surfaces in polymeric microfluidic devices for spontaneous fluid transport and valving.

Project info

Scientific Coordinator:
Tserepi Angeliki
Research Team 2 Leader:
Gogolides Evangelos
Research Team 3 Leader:
Boudouvis Andreas
Research Team 4 Leader:
Mataras Dimitrios


Duration (months):
600 000.00

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