One- and two-particle microrheology of soft materials based on optical-flow image analysis.

ABSTRACT: Particle-tracking microrheology probes the rheology of soft materials by accurately tracking an ensemble of embedded colloidal tracer particles. One-particle analysis, which focuses on the trajectory of individual tracers is ideal for homogeneous materials that do not interact with the particles. By contrast, the characterization of heterogeneous, micro-structured materials or those where particles interact directly with the medium requires a two-particle analysis that characterizes correlations between the trajectories of distinct particle pairs. Here, we propose an optical-flow image analysis as an alternative to the tracking-based algorithms to extract one and two-particle microrheology information from video microscopy images acquired using diverse imaging contrast modalities. This tec

SUBMITTER: Brizioli M 

PROVIDER: S-EPMC11770286 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature