Fig. 4. Effect of active-worm conformations on the transport through a pillar array.

(A) Photographs showing the typical conformations at a high level of activity (T = 25°C, light blue) and restricted to fewer conformations at low activity (i.e., low temperature or in the presence of alcohol, dark blue). (B) Conformation statistics. The worm conformations have been measured along the elution in the channel for two different levels of activity. (C) Tracked position of the active worm along the length of the channel $\tilde{x}=\frac{x}{(x_{\mathrm{f}}-x_0)}$ for two different levels of activity as a function of time. Conformations of the active worms influence the elution time in the channel. At low level of activity, modes (1 to 3) are dominant, which increases the elution time.