Speaker
Description
The dynamic behavior of molecules and nanoparticles in confined environments, such as at interfaces and within porous materials, lead to complex and highly-varied phenomena, where heterogeneity may arise from spatial variation of the material/interface itself, from structural configurations, or through inhomogeneous dynamic behavior. To obtain relevant information about these complex dynamics, we have developed highly multiplexed single-molecule/single-particle tracking methods that acquire large numbers of trajectories in a given experiment, enabling robust statistical analysis of anomalous motion. Recent work in our lab has explored the 3D motion of both Brownian and self-propelled nanoparticles within highly interconnected porous environments (both static and dynamic), leading to insights linking microscopic pore-scale mechanisms to macroscopic transport. Examples to be discussed include the barrier-limited diffusive escape of nanoparticles from porous cavities, the enhanced motion of self-propelled catalytic Janus particles within 3D porous materials and the facilitated Brownian diffusion of nanoparticles within dynamically fluctuating porous environments.
| Country | USA |
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