CEITEC Nano Research Infrastructure
Brno University of Technology
Purkyňova 123, 612 00 Brno
Czech Republic
+420 54114 9207
nano@ceitec.vutbr.cz
Consumables | wh | ShP | i | feedback
DHR2 Rheometer (DHR)
Guarantor:
Petr Lepcio, Ph.D.
Instrument status:
Operational, 24.11.2023 22:02, The rheometer was moved to the right fume hood in B1.14 and tested. It is ready for next week´s measurements. Geometry remains mounted, and the compressed air supply was left on.
Equipment placement:
CEITEC Nano - B1.21
Discovery Hybrid Rheometer 2 (DHR-2) is an advanced rotational rheometer with a combined motor and transducer (CMT) design. It has a patented drag-cup motor, the second generation of magnetic bearing, a force-rebalance transducer (FRT) for normal force control, and a true position sensor (TPS) combined in a single-head hybrid rheometer. It is a powerful tool for characterizing the flow properties of liquids and the mechanical properties of soft solids such as gels.
Available measurements
Steady flow
Viscosity
Newtonian/non-Newtonian behavior
Dilatant/pseudoplastic behavior
Oscillatory measurements
Storage and Loss moduli, loss factor (tan delta)
Thermomechanical spectrum
Linear viscoelasticity region (LVR)
Rubbery plateau modulus
Reptation time
Gelation point, crossover modulus, frequency, temperature
Small and large amplitude oscillatory shear (SAOS, LAOS)
Creep (constant stress deformation)
Stress relaxation
Temperature tests
Combined tests
Photogallery
Specification
| Minimum torque (oscillation) | 2 nN·m |
|---|---|
| Minimum torque (steady flow) | 10 nN·m |
| Maximum torque | 200 mN·m |
| Torque resolution | 0.1 nN·m |
| Minimum frequency | 1.00·10–7 Hz |
| Maximum frequency | 100 Hz |
| Minimum angular velocity | 0 rad·s–1 |
| Maximum angular velocity | 300 rad·s–1 |
| Displacement resolution | 10 nrad |
| Maximum normal force | 50 N |
| Normal force sensitivity | 5 mN |
| Normal force resolution | 0.5 mN |