Figure 1
From: High wettability of liquid caesium iodine with solid uranium dioxide

Melting factors for CsI and B2O3 added to solid UO2. (a) Liquid CsI immediately exhibits high wetting after melting onto the solid UO2 surface. (b) Liquid B2O3 maintains an almost hemispherical shape on the solid UO2 surface. Data are displayed chronologically from left to right.