Fig. 4: Effect of interfacial tension.
From: Anomalous dynamics of a passive droplet in active turbulence
The droplet is viewed at different time points using the activity field ζ for (a–d) \({{{{{{{{\rm{Re}}}}}}}}}_{{{{{{{{\rm{I}}}}}}}}}=15\) and (e–h) \({{{{{{{{\rm{Re}}}}}}}}}_{{{{{{{{\rm{I}}}}}}}}}=1\). At the lower value of \({{{{{{{{\rm{Re}}}}}}}}}_{{{{{{{{\rm{I}}}}}}}}}\), we show a break up of the droplet and subsequent mixing in the outer active bath. The color bar shows the strength of the activity field ζ. i MSD with varying droplet interfacial tension \({{{{{{{{\rm{Re}}}}}}}}}_{{{{{{{{\rm{I}}}}}}}}}\) showing the initial ballistic regime and the transition towards a diffusive regime. The dashed lines are a guide to the eye. At very low \({{{{{{{{\rm{Re}}}}}}}}}_{{{{{{{{\rm{I}}}}}}}}}=1\), MSD reaches a plateau, indicating that the center of mass of the mixed sub-droplets remains almost stationary after the initial ballistic regime. j The VACF with varying \({{{{{{{{\rm{Re}}}}}}}}}_{{{{{{{{\rm{I}}}}}}}}}\) indicates that varying the surface tension does not give rise to different time scales in the VACF for a given droplet size. In all the plots, R = 16.
