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Superhydrophobicity for Antifouling Microfluidic Surfaces

  • N. J. Shirtcliffe
  • P. RoachEmail author
Protocol
Part of the Methods in Molecular Biology book series (MIMB, volume 949)

Abstract

Fouling of surfaces is often problematic in microfluidic devices, particularly when using protein or ­enzymatic solutions. Various coating methods have been investigated to reduce the tendency for protein molecules to adsorb, mostly relying on hydrophobic surface chemistry or the antifouling ability of ­polyethylene glycol. Here we present the potential use of superhydrophobic surfaces to not only reduce the amount of surface contamination but also to induce self-cleaning under flow conditions. The methodology is presented in order to prepare superhydrophobic surface coatings having micro- and nanoscale feature dimensions, as well as a step-by-step guide to quantify adsorbed protein down to nanogram levels. The fabrication of these surfaces as coatings via silica sol–gel and copper nano-hair growth is presented, which can be applied within microfluidic devices manufactured from various materials.

Key words

Superhydrophobicity Non-wettable Antifouling Protein adsorption 

Notes

Acknowledgments

The authors acknowledge financial support from EPSRC (grant EP/D500826/1).

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Copyright information

© Springer Science+Business Media,LLC 2013

Authors and Affiliations

  1. 1.Biomimetic Materials, Hochschule Rhein-WaalRhine-Waal University of Applied SciencesKleveGermany
  2. 2.Institute for Science and Technology in MedicineKeele UniversityStaffordshireUK

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