Structure in shear flow (old results)
| Shear Isotropic | |
|---|---|
| Stroboscobic-SANS measurements to follow the orientation of rod-like (wormlike micelles of block co-polymers and surfactants) under oscillatory shear shear flow (LAOS). | |
| SHEAR ISOTROPIC-NEMATIC COEXISTENCE | |||
|---|---|---|---|
| Spinodal decomposition of mixtures of rod-like virus and dextran at the I-N coexistence quench to a low shear rate as measured small angel light scattering. | Nucleation growth of atactoids of mixtures of rod-like virus and dextran at the I-N after a quench to a high shear rate as measured small angel light scattering. | ||
| Start up flow after phase separation in mixtures of rod-like virus and dextran as measured by polarized confocal microscopy. | Shear banding in rod dispersions at the I-N transition: fd-dextran mixtures form large shear bands (1 mm thick). Intensity of the band flips when rotating crossed polarizers. | ||
| Shear Nematic | |||
|---|---|---|---|
| Recovery of order after shearing a nematic phase of fd viruses using fluorescence microscopy with few labeled rods. | Recovery of order after shearing a nematic phase of fd viruses polarization microscopy. | ||
| Shear soft crystals | |||
|---|---|---|---|
| Highly charged colloidal spheres crystalize into poly-domains. | Or into a mono domain, depending on the shear rate. | ||
| Shear critical structures | |
|---|---|
| Colloid-polymer mixtures close the gas-liquid phase transition have a critical structure. The movie shows the response of the intensity in 2D of small angle light scattering under oscillatory shear. | |
Phase behaviour of complex mixtures (old results)
| Spinodal decomposition of mixtures of rod-like virus and dextran at the I-N coexistence after a quench to 0 shear close to the isotropic phase as measured by polarized confocal microscopy. | Nucleation growth of atactoids of mixtures of rod-like virus and dextran at the I-N coexistence after a quench to 0 shear close to the nematic phase as measured by polarized confocal microscopy. | ||
| Rod-like virus in water being pushed from the isotropic to the nematic phase by applying 1000 kBar of pressure. | Rod-like virus in water being released from the nematic to the isotropic phase by releasing 1000 kBar of pressure. |