Fig. 5From: A multiscale modeling study of particle size effects on the tissue penetration efficacy of drug-delivery nanoparticlesParticle size effects in a cell-free system. a Theoretical model (Eq. 6) and b simulation considering pure diffusion. c Theoretical model (Eq. 7) and d simulation considering a small advection (0.05 μm/s) and diffusionBack to article page