Option for a Rheometer with two EC Drives:
Rheo-Microscopy Setup

Flow visualization in the stagnation plane
Characterization of microstructural changes at higher shear rates
Direct assignment of images and videos to rheological data

Rheo-Microscopy Setup

Key features
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Rheo-microscopy is an established technology for visualizing the inner structures of samples while applying shear and deformation forces. The rheo-microscopy setup for a configuration with two EC drives performs measurements in counter-rotation and counter-oscillation mode, producing a stagnation plane where the sheared structure can be kept in the microscope’s field of view while accurate rheological data is determined. In this way, breakage of agglomerates, alignment, deformation, and relaxation processes can be visualized for individual structures.

Key features

Complete flow visualization in the stagnation plane

The rheometer’s counter-rotation and counter-oscillation modes can be used to produce a stagnation plane in which the observed structure is sheared but remains in a fixed position. The stagnation plane constantly keeps the focused structure in the microscope’s field of view while accurate rheological data is obtained.

Flexible type of access and illumination

Besides the possibility of sample focusing through the lower plate via a mirror, the system can also be positioned to focus into the sample gap from the side. The holder can be moved in the x and z directions for sample scanning in radial and axial directions. The sample is illuminated by a light guide, either along the optical axis or over a suitable light guide holder.

Options for polarized, non-polarized, and fluorescence microscopy

The modularity of the Anton Paar microscope setup allows you to simply switch between different optical techniques. When polarized light or fluorescence is required, the corresponding optical module can be easily mounted while all the other components remain unchanged.

Image recording and display

The rheometer software controls both the rheometer and the CCD camera, which enables automated image and video recording during the measurement. The software also offers a direct assignment of images and videos to rheological data in order to highlight correlations between macroscopical and structural properties.