Extended Data Fig. 7: Calculation of contact angle.
From: Stiffness-dependent active wetting enables optimal collective cell durotaxis

Measurement of contact angle θ as a function of the cluster radius (\(R_{{{{\mathrm{sphere}}}}}\)), the contact radius (R) and the cluster height (H). For low wettability (a) and high wettability (b) clusters the calculation varied. All parameters were estimated from high resolution z-stacks of LifeAct-mCherry A431 clusters seeded on E-cadherin substrates.