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Exploring the Effects of Atmospheric Forcings on Evaporation: Experimental Integration of the Atmospheric Boundary Layer and Shallow Subsurface
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Capillary evaporation in pores.

R Roth1, K M Kroll

  • 1Max-Planck Institut für Metallforschung, Heisenbergstraße 3, D-70589 Stuttgart, Germany. Institut für Theoretische und Angewandte Physik, Universität Stuttgart, Pfaffenwaldring 57, D-70569 Stuttgart, Germany.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|June 22, 2011
PubMed
Summary

This study explores bubble formation and breaking in nanoscale pores using density functional theory and a morphometric approach. This method allows detailed analysis of pseudo phase transitions, overcoming limitations of traditional computer simulations.

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Measurement of Leaf Hydraulic Conductance and Stomatal Conductance and Their Responses to Irradiance and Dehydration Using the Evaporative Flux Method (EFM)

Published on: December 31, 2012

Area of Science:

  • Physical Chemistry
  • Nanotechnology
  • Materials Science

Background:

  • Capillary evaporation is crucial for understanding fluid behavior at the nanoscale.
  • Bubble formation and breaking in confined geometries present unique thermodynamic challenges.
  • Existing computational methods may struggle with systems dominated by fluctuations.

Purpose of the Study:

  • To investigate the formation and breaking of bubbles in a hydrophobically lined conical pore.
  • To apply a combined density functional theory (DFT) and morphometric approach for nanoscale analysis.
  • To explore pseudo phase transitions in systems with limited particle numbers.

Main Methods:

  • Density functional theory (DFT) treatment of capillary evaporation.
  • Morphometric approach describing grand potential in geometrical terms.
  • Extrapolation from macroscopic to nanoscale systems.

Main Results:

  • Detailed exploration of bubble formation and breaking dynamics.
  • Analysis of fluctuations between states with and without bubbles.
  • Demonstration of DFT's capability to detail both system states.

Conclusions:

  • The combined DFT and morphometric approach provides a powerful tool for studying nanoscale phenomena.
  • This methodology offers advantages over traditional simulations for systems with significant fluctuations.
  • Insights into bubble dynamics in hydrophobic nanopores are gained.