FIG. 10.

(Left) Observed handedness change for various background flow velocity and fluid viscosity. The vertical dashed line and the dashed-dot line denote the viscosity of water and methylcellulose, respectively. Both axes are plotted on a log scale. (Right) Time evolution of n₃ and f₃ at the motor for flow speed 2000 µm/s. In both plots, the intrinsic torsion is set to τ₁ = −2.1472 µm⁻¹ and τ₂ = 1.4310 µm⁻¹.