Static and Dynamic Capillarity in Silicon Based Nanochannels
作者： Niels Tas , Nataliya Brunets , Joost W. van Honschoten , Jeroen Haneveld , Henri V. Jansen
DOI: 10.1007/978-94-007-7534-3_3
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摘要: In this chapter we review the fabrication of silicon based nanochannels and their use in capillarity studies. Static measurements pressure isolated liquid plugs confined hydrophilic nanochannels, confirm existence capillary negative pressure, quantitatively accordance with Young-Laplace equation. The can be quantified through measurement elasto-capillary deformation channel capping due to difference atmospheric pressure. By measuring filling dynamics uniform accurately defined height, different (apparent) viscosity effects confinement have been revealed. One effect (visible insulating sub-100-nm channels) is likely related influence electrical double layer (an electroviscous effect), while other conductive sub-50 nm seems a decrease effective thin immobile close polar or charged wall.
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