Rheology Lab Information

Country
Finland
University
VTT Technical Research Centre of Finland
Institution
Soft Matter team, Sustainable Products and Materials research area, Jyväskylä
Rheometers
  • TA Instruments DHR-2 rheometer
  • Brookfield viscometers
  • Custom-built pipe rheometers
  • Flow imaging and velocity profiling combined with rotational and pipe rheometry
Accessories
  • Wide selection of measurement geometries: parallel plates, cone-and-plate and concentric cylinder geometries with various surface finishes (smooth, sandblasted, crosshatched, serrated). Vane-in-cup geometries are available for the rheological characterization of samples exhibiting wall slip, large particles and/or sensitive microstructure
  • Rheo-optics: transparent measurement geometries for simultaneous rheological characterization and imaging of sample's microstructure with optical coherence tomography (OCT) and digital microscopy
  • Peltier temperature control: parallel plates & cone-and-plate: -40 to 200 °C, concentric cylinder & vane-in-cup: -20 to 150 °C, rheo-optics: -20 to 100 °C
  • 3D-printed measurement geometries: possibility to design and manufacture customized measurement geometries using different 3D printing techniques
  • Modular, customizable pipe rheometers: pressure loss and viscosity measurements on liquids, suspensions and foams in various pipe flow geometries
  • Flow imaging and velocity profiling: analysis of sample microstructure, velocity profile and wall slip in rotational and pipe rheometer measurements using optical coherence tomography (OCT), ultrasound velocity profiling (UVP) and high-speed video imaging (HSVI)
Information Links
Flow imaging with optical coherence tomography: Koponen, A. I., & Haavisto, S. (2020) Analysis of industry-related flows by optical coherence Tomography—A review. KONA Powder and Particle Journal, 37, 42-63, https://doi.org/10.14356/kona.2020003
Flow imaging with polarization-sensitive optical coherence tomography: Jäsberg, A., Puisto, A., Leppänen, I., Koponen, A. I., & Alava, M. J. (2023) Online detection of orientation of cellulose nanocrystals in a capillary flow with polarization-sensitive optical coherence tomography. Cellulose, 30(6), 3539-3550, https://doi.org/10.1007/s10570-023-05072-4
Velocity profiling rheometry: Kataja, M., Lehto, R., Haavisto, S., Salmela, J., & Koponen, A. (2017) Characterization of micro-fibrillated cellulose fiber suspension flow using multi scale velocity profile measurements. Nordic Pulp & Paper Research Journal, 32(3), 473-482, https://doi.org/10.3183/npprj-2017-32-03-p473-482
Modelling of viscosity and wall slip in multiphase flows: Koponen, A. I., Viitala, J., Tanaka, A., Prakash, B., Laukkanen, O. V., & Jäsberg, A. (2024) Pipe rheology of wet aqueous application foams. Chemical Engineering Science, 283, 119282, https://doi.org/10.1016/j.ces.2023.119282
Contacts
Olli-Ville Laukkanen (Olli-Ville.Laukkanen@vtt.fi)
Last Updated By
Olli-Ville.Laukkanen@vtt.fi
Last Updated
8/24/2024 2:37:01 PM

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  HIGHLIGHTS
NRS Young Rheologist Awardee 2026: Ases Akas Mishra
It is our pleasure to announce Ases Akas Mishra as the recipient of the 2026 NRS Young Rheologist Award. The announcement was made yesterday by the NRS President Olli-Ville Laukkanen after Ases's doctoral defense at Chalmers University of Technology.

Ases has been unusually productive during his graduate studies, reflecting his capacity to combine independent research initiatives with collaborative work. His research spans experimental, constitutive, and numerical rheology, as well as work at large-scale research facilities, notably at the MAX IV synchrotron facility. Throughout his PhD, his work has led to fundamental contributions to rheology, while also having a clear impact on industrial research, particularly through the company-linked part of his project focused on food processing. Ases's doctoral thesis can be found here: Advancing Experimental, Modeling and Neural Network Techniques for Thixotropic Yield Stress Flows.

Ases is invited to give an award lecture at the Nordic Rheology Conference & Mechanics of Time-Dependent Materials Conference 2026 in Lund in August.

Warm congratulations to Ases for the well-deserved award! 👏
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