CSS450 Optical Rheology Systems

The Linkam Optical Shearing System (CSS450) enables direct observation of structural dynamics of complex fluids through a standard optical microscope under accurately controlled temperature and different shear modes.

Linkam Optical Shearing System

The optical shearing cell can be used to thoroughly examine the microstructure evolution of complex fluids for several physical processes, for instance, defects dynamics of liquid crystals, flow-induced mixing and de-mixing of polymer blends, coarsening of binary fluids at the time of their phase separations, aggregation of red blood cells and their deformation in-flows, and so on.

This enables the user to be in a great position to compare the microstructural dynamics with rheological data for gaining a better understanding of the rheology of complex fluids.

CSS450 Optical Rheology System Specifications

  • Four types of operation: oscillatory, step, steady, and relax
  • The sample is mounted on quartz window
  • Computer control with the help of LINK
  • Developed for use with the LINK image capture system
  • Detachable lid for easy cleaning and sample loading
  • Using stage clamps, the system can be fixed to most of the microscopes
  • Sample area of 30 mm Ø
  • Temperature range is from ambient to 450 °C (−50 °C to 450 °C on Cryo CSS450)
  • Temperature rates range between 0.01 °C/minute and 30 °C/minute
  • Temperature stability of ±0.2 °C
  • Variable speed of gap setting of 1–300 µm/s
  • Gap setting of 5–2500 µm, 1 µm increments
  • Use of 100-Ohm platinum resistor
  • Silver heating blocks for high thermal conductivity
  • Viewing area is 2.8 mm Ø and observation diameter is 7.5 mm Ø
  • Minimum working distance of the objective lens is 7.4 mm
  • Before starting the system, the amplitude, frequency, and velocity can be fixed
  • Minimum working distance of the condenser lens is 15 mm
  • Data can be saved to a spreadsheet
  • Apt for phase contrast, polarized, and transmitted light

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