55 citations · 140 across the 13 of their papers we have counts for
14 papers
Polymeric Solvents Control Swelling-Induced Surface Creasing
Zechao Jiang, Zhaoyu Ding, Shaohua Yang +7
Surface creasing in swelling polymer gels is commonly attributed to compressive strain or interlayer mismatch, yet its general control remains unclear. Here we show that solvent po…
Hydrodynamic Switching Fronts Polarize Deformable Particle Trains
Linzheng Huang, Hengdi Zhang, Zaicheng Zhang +1
We show that propagating switching fronts mediate directional state transmission and polarity selection in a passive many-body suspension. In confined trains of slipper-shaped defo…
Quantitative measurements of the lift force acting on a sphere sliding along a liquid-liquid interface
Hao Zhang, Zaicheng Zhang, Abdelhamid Maali
This work explores the lift force experienced by a particle moving in a viscous fluid near a liquid-liquid interface. The lift force is induced by the interaction between the visco…
Nanoscale Electroviscous Lift Force
Hao Zhang, Zaicheng Zhang, Thomas Guérin +1
About forty years ago, it was predicted that a charged particle, moving parallel to a charged wall in an electrolyte, should experience a lift force that, contrarily to electrostat…
Contactless measurements of the elastic modulus of living cells using thermal fluctuations of atomic force microscope cantilever
Hao Zhang, Zaicheng Zhang, Etienne Harte +2
We present a contactless method for measuring the elastic modulus of living cells (human triple-negative breast cancer, MDA-MB-231) from the thermal fluctuations of an atomic force…
Direct measurement of the viscocapillary lift force near a liquid interface
Hao Zhang, Zaicheng Zhang, Aditya Jha +5
Lift force of viscous origin is widespread across disciplines, from mechanics to biology. Here, we present the first direct measurement of the lift force acting on a particle movin…
Observation of Brownian elastohydrodynamic forces acting on confined soft colloids
Nicolas Fares, Maxime Lavaud, Zaicheng Zhang +3
Confined motions in complex environments are ubiquitous in microbiology. These situations invariably involve the intricate coupling between fluid flow, soft boundaries, surface for…
Unsteady drag force on an immersed sphere oscillating near a wall
Zaicheng Zhang, Vincent Bertin, Martin Essink +6
The unsteady hydrodynamic drag exerted on an oscillating sphere near a planar wall is addressed experimentally, theoretically, and numerically. The experiments are performed by usi…
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…
Electroviscous drag on squeezing motion in sphere-plane geometry
Marcela Rodriguez Matus, Zaicheng Zhang, Zouhir Benrahla +3
Theoretically and experimentally, we study electroviscous phenomena resulting from charge-flow coupling in a nanoscale capillary. Our theoretical approach relies on Poisson-Boltzma…
Near-field probe of thermal capillary fluctuations of a hemispherical bubble
Zaicheng Zhang, Yuliang Wang, Yacine Amarouchene +4
We report measurements of resonant thermal capillary oscillations of a hemispherical liquid gas interface obtained using a half bubble deposited on a solid substrate. The thermal m…
Contactless rheology of finite-size air-water interfaces
Vincent Bertin, Zaicheng Zhang, Rodolphe Boisgard +4
We present contactless atomic-force microscopy measurements of the hydrodynamic interactions between a rigid sphere and an air bubble in water at the micro-scale. The size of the b…
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…
Visco-elastic drag forces and crossover from no-slip to slip boundary conditions for flow near air-water interfaces
Abdelhamid Maali, Rodolphe Boisgard, Hamza Chraibi +3
The "free" water surface is generally prone to contamination with surface impurities be they surfactants, particles or other surface active agents. The presence of such impurities…