Negative pressure characteristics of an evaporating meniscus at nanoscale
Name
Maroo-2010-Negative pressure ch.pdf
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1009.05 KB
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Adobe PDF
Checksum (MD5)
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Author(s)
Maroo, Shalabh
Chung, J. N.
Date Issued
2011
Journal
Nanoscale Research Letters
Publisher
Springer Science+Business Media
Citation
Maroo, Shalabh C, and JN Chung. “Negative Pressure Characteristics of an Evaporating Meniscus at Nanoscale.” Nanoscale Research Letters 6, no. 1 (2011): 72.
Version
Final published version
Abstract
This study aims at understanding the characteristics of negative liquid pressures at the nanoscale using molecular dynamics simulation. A nano-meniscus is formed by placing liquid argon on a platinum wall between two nano-channels filled with the same liquid. Evaporation is simulated in the meniscus by increasing the temperature of the platinum wall for two different cases. Non-evaporating films are obtained at the center of the meniscus. The liquid film in the non-evaporating and adjacent regions is found to be under high absolute negative pressures. Cavitation cannot occur in these regions as the capillary height is smaller than the critical cavitation radius. Factors which determine the critical film thickness for rupture are discussed. Thus, high negative liquid pressures can be stable at the nanoscale, and utilized to create passive pumping devices as well as significantly enhance heat transfer rates.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
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Creative Commons Attribution
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DOI of Published Version
https://doi.org/10.1186/1556-276x-6-72
