Negative pressure characteristics of an evaporating meniscus at nanoscale

Shalabh C. Maroo, J. N. Chung

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

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.

Original languageEnglish (US)
Article number72
JournalNanoscale Research Letters
Volume6
Issue number1
DOIs
StatePublished - Jan 2011

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Negative pressure characteristics of an evaporating meniscus at nanoscale'. Together they form a unique fingerprint.

Cite this