“…Formation of water droplets on transparent solid surfaces (fogging) scatters light and reduces optical transmission, which can both be a major issue for the everyday use of eyeglasses, windshields and goggles, and also reduce the efficiency of medical/analytical instruments, solar energy panels and other industrial equipment. − To prevent fogging, extensive research on the control of surface wetting/dewetting behavior, typically using superhydrophobicity and superhydrophilicity, has been reported over the past decade. ,− However, superhydrophobic surfaces with very high static contact angles (CAs, θ S ) of over 150° are not ideal under high humidity conditions, because droplets can form on contact with water. , On the other hand, superhydrophilic surfaces with very low θ S (<5°) are well-known to prevent water droplets by promoting the formation of a continuous thin film of water condensed from the air, which has gained them significant attention in antifogging research. − However, such antifogging coatings reported so far commonly rely on outside stimulation by UV-light, , or hydrophilic textured or layered structures prepared by complicated processes such as layer-by-layer deposition, , reactive ion/chemical etching, , postcalcination, , and so on . Consequently, formation of these textured or layered structures can be complicated or expensive, and therefore impractical for large-scale use.…”