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Updated: Sep 24, 2025

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Nanoscale Thin-Film Boiling Processes on Heterogeneous Surfaces.

Shan Gao1, Jian Qu1, Zhichun Liu2

  • 1School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China.

Langmuir : the ACS Journal of Surfaces and Colloids
|May 10, 2022
PubMed
Summary

Nanoscale thin-film boiling on rough hydrophilic surfaces significantly enhances heat and mass transfer, outperforming macroscale boiling. Optimizing surface properties like roughness and wettability is key for efficient vaporization processes.

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Area of Science:

  • Nanoscale heat transfer
  • Phase change phenomena
  • Surface science and engineering

Background:

  • Industrial demand for energy-efficient and low-emission processes drives research in advanced boiling techniques.
  • Traditional macroscale boiling faces limitations in heat and mass transfer efficiency.
  • Nanoscale thin-film boiling presents a novel approach to overcome these limitations.

Purpose of the Study:

  • To investigate nanoscale thin-film boiling on heterogeneous surfaces.
  • To understand the influence of surface properties on boiling performance.
  • To identify mechanisms for optimizing heat and mass transfer in vaporization processes.

Main Methods:

  • Nonequilibrium molecular dynamics simulations were employed.
  • Detailed analysis of triple-phase interface, bubble nucleation, and fluid flow.
  • Evaluation of thermal characteristics on various nanoscale surfaces.

Main Results:

  • Nanoscale thin-film boiling without nucleation exhibits superior heat and mass transfer compared to macroscale boiling.
  • Rough hydrophilic surfaces dramatically enhance heat transfer (100x increase) and heat flux.
  • Rough hydrophobic surfaces lead to heat transfer deterioration due to trapped vapor films.

Conclusions:

  • Surface physicochemical properties, particularly interfacial thermal resistance, govern boiling performance.
  • Increasing surface roughness, wettability, and hydrophilic area proportion improves heat and mass transfer efficiency.
  • This study provides design guidelines for efficient thin-liquid-film boiling and high-heat flux removal.