Effect of capillary pressure and surface tension on the deformation of elastic surfaces by sessile liquid microdrops: an experimental investigation.

作者: Ramón Pericet-Cámara , Andreas Best , Hans-Jürgen Butt , Elmar Bonaccurso

DOI: 10.1021/LA801862M

关键词: Composite materialSurface tensionSessile drop techniqueYoung's modulusCapillary lengthAnalytical chemistryCapillary pressureCapillary numberMaximum bubble pressure methodDrop (liquid)Materials science

摘要: Sessile liquid drops are predicted to deform an elastic surface onto which they are placed because of the combined action of the liquid surface tension at the periphery of the drop and the capillary pressure inside the drop. Here, we show for the first time the in situ experimental confirmation of the effect of capillary pressure on this deformation. We demonstrate micrometer-scale deformations made possible by using a low Young's modulus material as an elastic surface. The experimental profiles of the deformed surfaces fit well the …

参考文章(22)
Alain Carré, Martin E.R. Shanahan, Effect of cross-linking on the dewetting of an elastomeric surface Journal of Colloid and Interface Science. ,vol. 191, pp. 141- 145 ,(1997) , 10.1006/JCIS.1997.4952
C.W. Extrand, Y. Kumagai, Contact Angles and Hysteresis on Soft Surfaces Journal of Colloid and Interface Science. ,vol. 184, pp. 191- 200 ,(1996) , 10.1006/JCIS.1996.0611
Robert N. Wenzel, RESISTANCE OF SOLID SURFACES TO WETTING BY WATER Industrial & Engineering Chemistry. ,vol. 28, pp. 988- 994 ,(1936) , 10.1021/IE50320A024
Lee R. White, The contact angle on an elastic substrate. 1. The role of disjoining pressure in the surface mechanics Journal of Colloid and Interface Science. ,vol. 258, pp. 82- 96 ,(2003) , 10.1016/S0021-9797(02)00090-5
Alain Carré, Jean-Claude Gastel, Martin E. R. Shanahan, Viscoelastic effects in the spreading of liquids Nature. ,vol. 379, pp. 432- 434 ,(1996) , 10.1038/379432A0
M E R Shanahan, The influence of solid micro-deformation on contact angle equilibrium Journal of Physics D. ,vol. 20, pp. 945- 950 ,(1987) , 10.1088/0022-3727/20/7/018
Abbas Samani, Jonathan Bishop, Chris Luginbuhl, Donald B Plewes, Measuring the elastic modulus of ex vivo small tissue samples Physics in Medicine and Biology. ,vol. 48, pp. 2183- 2198 ,(2003) , 10.1088/0031-9155/48/14/310
E. Saiz, A.P. Tomsia, R.M. Cannon, Ridging effects on wetting and spreading of liquids on solids Acta Materialia. ,vol. 46, pp. 2349- 2361 ,(1998) , 10.1016/S1359-6454(98)80016-5
A. Tuteja, W. Choi, M. Ma, J. M. Mabry, S. A. Mazzella, G. C. Rutledge, G. H. McKinley, R. E. Cohen, Designing Superoleophobic Surfaces Science. ,vol. 318, pp. 1618- 1622 ,(2007) , 10.1126/SCIENCE.1148326
B. Cappella, D. Silbernagl, Nanomechanical properties of mechanical double-layers: a novel semiempirical analysis. Langmuir. ,vol. 23, pp. 10779- 10787 ,(2007) , 10.1021/LA701234Q