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Updated: Jul 10, 2026
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Fabrication of Superhydrophobic Metal Surfaces for Anti-Icing Applications
Published on: August 15, 2018
Freezing under motion: How surface vibrations suppress ice nucleation in water nanofilms
Pengxu Chen1, Patrick Sullivan2, Rohit Pillai1
1Institute for Multiscale Thermofluids, School of Engineering, University of Edinburgh, King's Buildings, EH9 3FB Edinburgh, United Kingdom.
The Journal of Chemical Physics
|July 9, 2026
Summary
Surface vibrations prevent ice nucleation in water nanofilms through two mechanisms: acoustothermal heating and direct disruption of water structure. This kinetic disruption suppresses freezing even at constant temperature, offering an effective anti-icing strategy.
Area of Science:
- Materials Science
- Physical Chemistry
- Surface Science
Background:
- Preventing ice formation on surfaces is crucial for many natural and engineered systems.
- Surface vibrations are a potential energy-efficient anti-icing method, but the underlying molecular mechanisms are not well understood.
Purpose of the Study:
- To investigate the molecular mechanisms by which harmonic surface vibrations inhibit heterogeneous ice nucleation in supercooled water nanofilms.
- To elucidate both thermal and non-thermal effects of surface vibrations on ice nucleation.
Main Methods:
- Molecular dynamics simulations were employed to model supercooled water nanofilms on vibrating surfaces.
- Analysis included tracking nucleation rates, interfacial water structure, molecular mobility, and tetrahedral order.
Main Results:
- Surface vibrations were found to suppress ice nucleation through two complementary mechanisms: acoustothermal heating and kinetic disruption.
- The kinetic mechanism involves increased molecular mobility and dispersed water structure, hindering pre-nucleation cluster formation.
- Vibrations significantly reduce nucleation rates, even when temperature is constant, confirming the kinetic effect.
Conclusions:
- Surface vibrations offer a powerful strategy for controlling ice formation at the nanoscale.
- Understanding these molecular mechanisms provides insight into vibration-mediated anti-icing technologies.
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