Abstract
In coexistence with bulk water, wetting in the hydrophobic grain boundary is unavailable at ambient conditions, because of less energy gain when water is on top of a hydrophobic surface. However, this study discloses a high-pressure driven wetting between hydrophobic surfaces. The dewetting-wetting transition pressure is higher when temperature increases, due to a competition between enthalpy gain and entropy loss. The stably wetting water monolayer exhibits a continuous phase transition from a liquidlike to a square-ice-like form, through interconversions between liquid and square-ice components. The diagram of dewetting-wetting and liquidlike-icelike transitions is delivered here.
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