Figure 3 | Scientific Reports

Figure 3

From: Active particles crossing sharp viscosity gradients

Figure 3

Schematic showing the reorientation of an active particle as it (\(\textbf{a}\)) crosses a viscosity interface or (\(\textbf{b}\)) gets reflected by the interface. This reorientation depends largely on the viscosity difference \(\eta _1-\eta _0\) and the particle is reflected only when going from low to high viscosity if its initial orientation is sufficiently shallow, \(\theta _i > \theta _{crit}\).

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