2 papers
cond-mat.mtrl-sci2022
Contactless Rheology of Soft Gels over a Broad Frequency Range
Zaicheng Zhang, Muhammad Arshad, Vincent Bertin +4
We report contactless measurements of the viscoelastic rheological properties of soft gels. The experiments are performed using a colloidal-probe Atomic Force Microscope (AFM) in a…
cond-mat.soft2019
Direct Measurement of the Elastohydrodynamic Lift Force at the Nanoscale
Zaicheng Zhang, Vincent Bertin, Muhammad Arshad +3
We present the first direct measurement of the elastohydrodynamic lift force acting on a sphere moving within a viscous liquid, near and along a soft substrate under nanometric con…