nano-and microstructures on these surfaces. The anisotropic dewetting behavior of rice leaves and the self-cleaning ability of lotus leaves are two typical examples related to hydrophobicity. [3] In the past decades, a large number of biomimetic functional materials with controlled wettability has been explored for practical applications such as self-cleaning windows, [4] drag reduction, [5] surface treatment of medical devices, [6] waterproof clothes and textiles, [6] anti-corrosion, [7] anti-freezing, [8] heat transfer enhancement, [9] micro/ nanofluidic devices, [10] anti-biofouling surfaces, [11] and transparent self-cleaning surfaces for photovoltaics. [12] On the other hand, hydrophilic or water-loving surfaces are desired in some other applications, such as microfluidics, anti-fogging, liquid separation, or heat transfer. [13] Therefore, many efforts have been conducted to make controllable wetting structures. However, the stability of hydrophobic surface structures remains a significant difficulty, as they may become wet and lose the slip effect due to pollution, [14] air diffusion, [15] external pressure, [16] gravity, [17] vibrations, [16a,18] evaporation, [19] and impacts. [7b] Recently, it has been experimentally and theoretically discovered that the tip shape of pillars is a critical factor contributing to hydrophobic stability. Pillars with mushroom-like structures tend to improve this stability better than those with concave, spherical, or flat tips. [20] The underlying reason is that the net force directed upward competes with the internal pressure so that surfaces do not get wet, thanks to the tip formed on the top of the mushroom-like structure. [21] Oleophilic surfaces can attract oils or organic liquids. Oleophobicity refers to the property of surfaces with low affinity to oils. Oleophilic, oil-loving, surfaces have been known to have disastrous effects, for example, corrosion of oil pipelines, less self-cleaning ability of leaves, and swelling of elastomeric seals. [22] Therefore, we need omniphobic surface which could repel both polar and non-polar liquids. [23] Realizing the significance of superoleophobic surfaces, scientists developed surfaces with unusual patterns, such as re-entrant or negative-slope structures, to achieve a stable liquid-repellent state. [21a] The reentrant structure was first inspired by springtail, Figure 1. [24] The skin of this animal possesses an oil-repellent ability that protects its skin-breathing body against suffocation by complete Superhydrophobic surfaces have many interesting applications because of their self-cleaning, waterproof, anti-biofouling, anti-corrosion, and lowadhesion properties. Accordingly, numerous surfaces with hierarchical micro/ nanostructures are designed and engineered to achieve superhydrophobicity. However, these surfaces have two major problems. First, they lose superhydrophobic properties over time, primarily because of environmental conditions such as vibration, external pressure, evaporation, and pollution. Second, most su...

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