Fig. 3.

Diffusion tensor eigenvalues of capillary phantom at each temperature as a function of diffusion time. From the top are 10°C, 20°C, 30°C, and 40°C, and each row from left: λ₁, λ₂, and λ₃. At all temperatures, λ₁ and free water (blue) did not decay, while λ₂ and λ₃ decreased in the order of structural scale from 6 μm (red), 12 μm (orange), 25 μm (yellow), 50 μm (green), and 100 μm (light blue).