Anomalous diffusion in heterogeneous microfabricated environments

by Dr Giacomo Guastella (DFA)

Thursday 2 Oct 2025, 17:45 → 18:10 Europe/Rome

1/1-3 - Aula B (Dipartimento di Fisica e Astronomia - Edificio Marzolo)

Diffusion in heterogeneous environments often departs from classical Brownian behavior, revealing complex transport regimes. We investigate the motion of colloidal particles in aqueous suspension within disordered pillar-like microstructures fabricated by maskless photolithography. Particle tracking shows distinct dynamical regimes, with deviations from both linear mean-square displacement growth and Gaussian displacement statistics. These findings suggest that structural heterogeneity can induce transport behaviors that extend beyond conventional diffusion models, pointing toward regimes of anomalous and potentially non-Gaussian dynamics.