Abstract
To discuss the uniformity of ice nucleating activity of solid/water interfaces, ice nucleation in water droplets prepared on glass surfaces was investigated for various droplet sizes from micrometer to sub-millimeter. When the interfacial area between water and the glass surface was larger than 1×10^<-8> m^2, the ice nucleation temperature showed large scatter, suggesting that the ice nucleating activity was no longer uniform. When the classical nucleation theory (CNT) is used to analyze surface-induced ice nucleation, the uniformity of interfaces that contribute to ice nucleation must be carefully considered, because CNT cannot be directly applied to non-uniform interfaces.
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