Capillary Negative Pressure Measured by Nanochannel Collapse


Tas, Niels R. and Escalante, Maryana and Honschoten, Joost W. van and Jansen, Henri V. and Elwenspoek, M. (2010) Capillary Negative Pressure Measured by Nanochannel Collapse. Langmuir, 26 (3). pp. 1473-1476. ISSN 0743-7463

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Abstract:A new method is presented to measure capillarity-induced negative pressure. Negative pressures of several bars have been measured for five different liquids (ethanol, acetone, cyclohexane, aniline, and water) over a range of surface tension. Capillary negative pressure was measured in 79 ( 3 nmsilica nanochannels on the basis of the determination of the critical channel width for elastocapillary collapse of the flexible plate covering the channels. The results are consistent with the Young-Laplace equation.
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Copyright:© 2010 American Chemical Society
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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