Fig. 1.

(A) A rigid, polarizable particle of complex shape is immersed in an electrolyte and subject to an oscillating electric field, $\mathrm{𝑬}(t)$. The force on the field-induced double layer results in steady streaming flows and the concomitant motion of the particle. The dynamical trajectory of the particle (A, Right) can be “programed” by engineering its symmetry and shape. Here, the $x\prime$ (red), $y\prime$ (green), and $z\prime$ (blue) axes carve out similarly colored ribbons to help visualize particle motion. (B) Particle shapes of different symmetries organized into their ICEP rotation classes. Particle colors are mapped to denote the radial distance from the surface to the particle center.