the wagner group


We have recently developed a flow-microscopy device for direct visualization of complex fluids in Couette flow. Although still under development, we hope to use the flow-microscope to study the structural evolution of colloidal suspensions under a variety of flow conditions, including shear startup/cessation, large amplitude oscillatory shear, and steady shear. Some of the intended capabilities of the instrument are depicted below, and include flow visualization under bright field and fluoresence conditions, as well as particle imaging velocimetry measurements.