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Rheolaser Lab®


Rheology measurement on multiple samples that is non destructive

A truly revolutionary approach to rheology

brochure Rheolaser-FSL.pdf

Rheolaser brochure

Measurement at rest

As absolutely no external stress is applied to the sample Rheolaser measurements are in the linear viscoelastic region


Micro Rheology is a new area in rheology that enables product characterisation on a micron scale. The viscoelastic properties of emulsions, gels, polymers etc can be analysed with the Rheolaser

Easy sample handling

- Measure 1 - 6 samples at the same time  

- Sample is contained in a glass cell

- Temperature control

- No geometry

- No evaporation

- Disposable cells mean No Cleaning!

- Test the same sample again and again


Micro structure analysis

- Viscous modulus

- Elastic Modulus

- Relaxation time

- Mesh size



Sample set up

Multi pixel



Measurement Principle

Light source

Interfering waves

Speckle image

Diffusing Wave Spectroscopy is the dynamic Multiple Light Scattering measurement which records parti­cles motion in concentrated and opaque fluids.

The RheoLaser uses Multi speckle difusing wave spectroscopy  (MS-DWS)  which consists of sending a co­herent laser light beam into the sam­ple. The light is multi-scattered by the particles in the sample, generating interfering backscattered waves. An interference image called “Speckle image” is detected by a multi-pixels detector. In a soft material, the internal thermal energy kBT causes the motion of micron sized particles .

This Particle Brownian motion in­duces a deformation of the speckle image. The multi pixel detector records the speckle pattern deformation to quantify the particle motion speed.

Meassurement principle

What is DWS?