Abstract
In the 19th century, Oscar Wilde stated “We live, I regret to say, in an age of surfaces”. Today, we do so even more, and we do not regret it: key advances in the understanding and fabrication of surfaces with controlled wetting properties are about to make the dream of a contamination-free (or 'no-clean') surface come true. Two routes to self-cleaning are emerging, which work by the removal of dirt by either film or droplet flow. Although a detailed understanding of the mechanisms underlying the behaviour of liquids on such surfaces is still a basic research topic, the first commercial products in the household-commodity sector and for applications in biotechnology are coming within reach of the marketplace. This progress report describes the current status of understanding of the underlying mechanisms, the concepts for making such surfaces, and some of their first applications.
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References
Cahn, J.W. Critical point wetting. J. Chem. Phys. 66, 3667–3672 (1977).
Shafrin, E.G. & Zisman, W.A. in Contact Angle, Wettability and Adhesion Advances in Chemistry series, Vol. 43 (ed. Fowkes, F. M.) 145–167 (American Chemical Society, Washington D. C., 1964).
Wenzel, R.N. Surface roughness and contact angle. Ind. Eng. Chem. 28, 988–994 (1936).
Cassie, A.B.D. & Baxter, S. Wettability of porous surfaces. Trans. Faraday Soc. 40, 546–551 (1944).
Johnson, Jr., R.E. & Dettre, R.H. in Contact Angle, Wettability and Adhesion Advances in Chemistry series, Vol. 43 (ed. Fowkes, F. M.) 112–135 (American Chemical Society, Washington D. C., 1964).
Bico, J., Marzolin, C. & Quéré, D. Pearl drops. Europhys. Lett. 47, 220–226 (1999).
Swain, P.S. & Lipowsky, R. Contact angles on heterogeneous surfaces: A new look at Cassie's and Wenzel's laws. Langmuir 14, 6772–6780 (1998).
Wolansky, G. & Marmur, A. The actual contact angle on a heterogeneous rough surface in three dimensions. Langmuir 14, 5292–5297 (1998).
Barthlott, W. & Neinhuis, C. Purity of the sacred lotus, or escape from contamination in biological surfaces. Planta 202, 1–8 (1997).
Von Baeyer, H.C. The lotus effect. The Sciences: Journal of The New York Academy of Sciences 12–15 (January/February 2000).
Richard, D. & Quéré, D. Viscous drops rolling on a tilted non-wettable solid. Europhys. Lett. 48, 286–291 (1999).
Richard, D. & Quéré, D. Bouncing water drops. Europhys. Lett. 50, 769–775 (2000).
Aussillous, P. & Quéré, D. Liquid marbles. Nature 411, 924–927 (2001).
Richard, D., Clanet, C. & Quéré, D. Contact time of a bouncing drop. Nature 417, 811 (2002).
Bico, J., Tordeux, C. & Quéré, D. Rough wetting. Europhys. Lett. 55, 214–220 (2001).
Miwa, M., Fujishima, A., Hashimoto, K. & Watanabe, T. Effects of the surface roughness on sliding angles of water droplets on superhydrophobic surfaces. Langmuir 16, 5754–5760 (2000).
Mahadevan, L. & Pomeau, Y. Rolling droplets. Phys. Fluids 11, 2499–2453 (1999).
Öner, D. & McCarthy, T.J. Ultrahydrophobic surfaces. Effects of topography length scales on wettability. Langmuir 16, 7777–7782 (2000).
Huppert, H.E. Flow and instability of a viscous current running down a slope. Nature 300, 427–429 (1982).
Seemann, R., Mönch, W. & Herminghaus, S. Liquid flow in wetting layers on rough substrates. Europhys. Lett. 55, 698–704 (2001).
Herminghaus, S. Roughness-induced non-wetting. Europhys. Lett. 52, 165–170 (2000).
Shibuchi, S., Onda, T., Satoh, N. & Tsuji, K. Super water-repellent surfaces resulting from fractal structure. J. Phys. Chem. 100, 19512–19517 (1996).
Chen, W. et al. Ultrahydrophobic and ultralyophobic surfaces: Some comments and examples. Langmuir 15, 3395–3399 (1999).
Youngblood, J.P. & McCarthy, T.J. Ultrahydrophobic polymer surfaces prepared by simultaneous ablation of polypropylene and sputtering of poly(tetrafluoroethylene) using radio frequency plasma. Macromolecules 32, 6800–6806 (1999).
Wu, Y., Sugimura, H., Inoue, Y. & Takai, O. Thin films with nanotextures for transparent and ultra water-repellent coatings produced from trimethylmethoxysilane by microwave plasma CVD. Chem. Vap. Depos. 8, 47–50 (2002).
Nakajima, A., Hashimoto, K. & Watanabe, T. Recent studies on super-hydrophobic films. Monatsh. Chem. 132, 31–41 (2001).
Reihs, K., Duparré, A. & Notni, G. Substrate with a reduced light-scattering, ultraphobic surface and a method for the production of the same. World patent 01/92179 (2001).
McCarthy, T.J. & Fadeev, A.Y. Surface modification using hydridosilanes to prepare monolayers. World patent 00/069572 (2001).
Russell, T.P. Surface-responsive materials. Science 297, 965–968 (2002).
Coupe, B., Evangelista, M.E., Yeung, R.M. & Chen, W. Surface modification of poly-(tetrafluoroethylene-co-hexafluorpropylene) by adsorption of functional polymers. Langmuir 17, 1956–1960 (2001).
Dupont-Gillain, Ch.C., Adriaensen, Y., Derclaye, S. & Rouxhet, P.G. Plasma-oxidized polystyrene: Wetting properties and surface reconstruction. Langmuir 16, 8194–8200 (2000).
Husemann, M. et al. Manipulation of surface properties by patterning of covalently bound polymer brushes. J. Am. Chem. Soc. 122, 1844–1845 (2000).
Wang, R. et al. Light-induced amphiphilic surfaces. Nature 388, 431–432 (1997).
Abbott, S., Ralston, J., Reynolds, G. & Hayes, R. Reversible wettability of photoresponsive pyrimidine-coated surfaces. Langmuir 15, 8923–8928 (1999).
Tadanaga, K., Katata, N. & Minami, T. Formation process of super-water-repellant Al2O3 coating films with high transparency by the sol-gel method. J. Am. Ceram. Soc. 80, 3213–3229 (1997).
Nakajima, A., Fujishima, A., Hashimoto, K. & Watanabe, T. Preparation of transparent superhydrophobic boehmite and silica films by sublimation of aluminum acetylacetonate. Adv. Mater. 11, 1365–1368 (1999).
Nakajima, A., Hashimoto, K., Watanabe, T., Takai, K., Yamauchi, G. & Fujishima, A. Transparent superhydrophobic thin films with self-cleaning properties. Langmuir 16, 7044–7047 (2000).
Blossey, R. & Bosio, A. Contact line deposits on cDNA microarrays: A 'twin-spot effect'. Langmuir 18, 2952–2954 (2002).
Deegan, R.D. et al. Capillary flow as the cause of ring stains from dried liquid drops. Nature 389, 827–829 (1997).
McHale, G., Rowan, S.M., Newton, M.I. & Banerjee, M.K. Evaporation and the wetting of a low-energy solid surface. J. Phys. Chem. B 102, 1964–1967 (1998).
Parker, A.R. & Lawrence, C.R. Water capture by a desert beetle. Nature 414, 33–34 (2001).
Huang, T.-L.J, Ko, J., Zhu, D.-W. & Fong, B.C. Patterned article having alternating hydrophilic and hydrophobic surface regions. World patent 99/57185 (2002).
Herminghaus, S., Gau, H. & Mönch, W. Element with extremely strong water-repellant dry zones on the surface thereof. World patent 99/23437 (1999).
Eickhoff, H., Nordhoff, E., Franzen, J. & Schürenberg, M. Processing of samples in solutions with a defined small wall contact surface. World patent 01/26797 (2001).
Gillmor, S.D., Thiel, A.J., Strother, T.C., Smith, L.M. & Lagally, M.G. Hydrophilic/hydrophobic patterned surfaces as templates for DNA arrays. Langmuir 16, 7223–7228 (2000).
Eickhoff, H., Schürenberg, M. & Nordhoff, E. 2D/3D-biochips — neue werkzeuge für die funktionelle genom- und proteomanalyse. Laborwelt III (transkript suppl.), 30–33 (2001).
Whitesides, G.M. & Stroock, A.D. Flexible methods for microfluidics. Phys. Today 42–47 (2001).
Drelich, J., Wilbur, J.L., Miller, J.D. & Whitesides, G.M. Contact angles for liquid drops at a model heterogeneous surface consisting of alternating and parallel hydrophobic/hydrophilic strips. Langmuir 12, 1913–1922 (1996).
Gau, H., Herminghaus, S., Lenz, P. & Lipowsky, R. Liquid morphologies on structured surfaces: from microchannels to microchips. Science 283, 46–49 (1999).
Lam, P., Wynne, K.J. & Wnek, G.E. Surface-tension-confined microfluidics. Langmuir 18, 948–951 (2002).
Darhuber, A.A., Troian, S.M. & Miller, S.M. Morphology of liquid microstructures on chemically patterned surfaces. J. Appl. Phys. 87, 7768–7775 (2000).
Grunze, M. Driven liquids. Science 283, 41–42 (1999).
Darhuber, A.A., Troian, S.M. & Reisner, W.W. Dynamics of capillary spreading along hydrophilic microstripes. Phys. Rev. E 64, 031603 (2001).
Herminghaus, S. et al. Liquid microstructures at solid interfaces. J. Phys. A 11, 57–74 (1999).
Washizu, M. Electrostatic actuation of liquid droplets for microreactor applications. IEEE Trans. Ind. Appl. 34, 732–737 (1998).
Torkkeli, A. et al. Electrostatic transportation of water droplets on superhydrophobic surfaces. Proc. IEEE MEMS 2001 475–478 (2001).
Kim, J. & Kim, C.J. Nanostructured surfaces for dramatic reduction of flow resistance in droplet-based microfluidics. Proc. IEEE MEMS 2002 479–482 (2002).
Lehto, A., Kojola, H., Lövgren, T. & Lönnberg, H. Method and device for carrying out a chemical analysis in small amounts of liquid. World patent 99/54730 (1999).
Wixforth, A. Device and method for manipulating small quantities of materials. World patent 01/94017 (2001).
Greenberg, C.B. et al. Photocatalytically-activated self-cleaning article and method of making same. World patent 98/41480 (2000).
Ammerlaan, J.A.M., McCurdy, R.J. & Hurst, S.J. Process for the production of photocatalytic coatings on substrates. World patent 00/75087 (2000).
Kazuhito, H. et al. Self-cleaning member having photocatalytic hydrophilic surface. Japanese patent 1,152,051 (2001).
Acknowledgements
The author would like to thank the Center for Bioinformatics, Saarland University, Saarbrücken, Germany, for its support during the preparation of this article.
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Blossey, R. Self-cleaning surfaces — virtual realities. Nature Mater 2, 301–306 (2003). https://doi.org/10.1038/nmat856
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DOI: https://doi.org/10.1038/nmat856
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