Measurement and verification of concentration-dependent diffusion coefficient: Ray tracing imagery of diffusion process

Wei Li¹, Meng Wei-Dong^{1, 2}, Sun Li-Cun³, Cao Xin-Fei¹, Pu Xiao-Yun^{1, 2, †}

Comparison between experimental diffusion images and simulated images at RI = n_c = 1.3482 for the first diffusion group (0%–60%): [(a′), (b′), (c′)] experimental diffusion images at t = 25, 210, and 380 min; [(a), (b), (c)] simulated images in “homogeneous solution”; [(a″, b″, c″)]: simulated images in inhomogeneous solution. Longitudinal scales represent solution concentrations.