Figure 6.
Hydrodynamic coupling of a 1 μm bead close to different interfaces. (A) Comparison of γ⊥(d) in green and γ‖(d) in red for all cell types and a stiff glass interface, shown in gray diamonds and in the upper left inset together with fits. Data points for all available measurements belonging to the respective cell type were averaged to get the resulting curves. The linear behavior in semi-logarithmic representation (right inset) confirms the nearly exponential decay, highlighted for the case of the MDCK cells. (B) Bar diagram of hydrodynamic decay lengths Λ⊥ and Λ‖ for all investigated cell types, the GUVs and the glass interface. (C) Summary of the measured values γ0⊥ and γ0‖ in units of γ∞ = 8.0 × 10−9 Ns/m. Numbers in (B) and (C) are mean values ± standard deviation. GUV data in (B) and (C) are displayed in darker colors and glass data in gray, where dark gray represents parallel and light gray perpendicular data. To see this figure in color, go online.