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September 12, 2025Physics of Fluids

Self-driven movement of water droplets on anisotropic wetting surfaces: A lattice Boltzmann investigation

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Authors

LLLong LiZLZhuoyi LiDJDengwei Jing

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Overview

Dynamic simulations reveal droplet motion controlled by wettability gradients, highlighting Young's force dynamics.

Key Points

  • Consistent horizontal velocities are achieved when complementary wetting pattern angles generate similar Young's force.
  • The wettability gradient induces droplet migration velocity ranging from 10 to 23 mm/s.
  • Double droplet coalescence results in greater spreading length compared to single droplets, which decreases with increasing We number.
  • Insights from this work can lead to innovative designs for functional interfacial materials in various applications.

Cite This Study

Li et al. (2025) studied this question.

synapsesocial.com/papers/68d44f7b31b076d99fa56c23https://doi.org/10.1063/5.0285587
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  5. 5Dual-Gradient Wettability-Patterned Surface for Droplet Rectification and Targeted Transport2025