Illustration from Scientific Research

Top, illustration of a colloidal particle moving at linear velocity v in a viscoelastic fluid. The linear motion deforms the microscopic network structure of the liquid, leading to a density gradient, as characterized by the density dipole p parallel to v . Bottom, when the particle is also set into rotation ω , the dipole is rotated in the xy plane by an angle θ p , which leads to the deflection of the particle trajectory by an angle θ d .

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