(458i) Dynamics of a Magnetic Colloidal Chain in a Confined Spherical Cavity

Study of confinement effects of magnetically driven colloidal chains under confinement provides insight of understanding some fundamental polymer dynamics such as chain entanglement or the cellular processes such as DNA replication or viral transfection. We present a bead-spring model through coarse-grained Brownian Dynamics simulation to describe the confinement dynamics inside a spherical cavity. Radial contraction is employed as the confining procedure, and a possible rotating magnetic field will be introduced to actuate dynamics in the system. Our aim is to study the conformational properties of confined semiflexible colloidal chain with respect to the contraction rate and level of confinement (i.e. weak or strong confinement regimes), and discuss the change of dynamics along the chain when a short-ranged wall interaction is present.