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Density distribution within the water contact layer determines slippage: Beyond surface wettability.

Shiyu Lv1, Qingwei Gao2, Qian Sun1

  • 1State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, and School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China.

Journal of Colloid and Interface Science
|July 10, 2025
PubMed
Summary

Liquid slippage is determined by contact layer density, not just surface wettability. A new metric, Roughness of Contact Density (RCD), quantifies this, revealing a power-law relationship with slip length for better fluid flow control.

Keywords:
Density distributionMass transferMolecular dynamics simulationsSlip lengthSurface wettability

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