Figure 7.

DDM for WT C. reinhardtii. (a) Measured $g\left(q,\tau \right)$ values (symbols). The solid line and dashed line are fits obtained with the oscillatory model (Eqs. 2 and 9) and the linear model (Eqs. 2, 4, and 6), respectively. Inset: Sketch of a helical C. reinhardtii trajectory. The progressive, $L_p$, and (zoomed-in) oscillatory, $L_0$, length scales probed by DDM are shown, with the frequencies of the helical precession (2 Hz) and oscillatory swimming (50 Hz). (b) ISFs, $f\left(q,\tau \right)$, obtained using Eqs. 2 and 9.