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Lubricant Impregnated Surfaces (LIS) are liquid repellent surfaces made by infusing a lubricant into the porous solid surfaces. Compared to superhydrophobic surfaces, LIS have been demonstrated to have a superior range of liquid repellency as well as better robustness. Given such advantages, LIS have many promising applications varying from foods and beverages packaging to energy harvesting systems. In this contribution, we present a new lattice-Boltzmann model suitable for simulating a liquid droplet on LIS. This model allows us to capture the relevant physical parameters for the droplet-lubricant-gas-solid system, such as the contact angles between the three fluids on the solid surface and the fluid-fluid surface tensions. We first show that the model can reproduce all possible wetting states known for LIS. Then we will discuss how the mobility of the liquid droplets on LIS may (strongly) depend on the wetting states and the physical parameters of these systems.
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