Skip to left navigation
Skip to page content
Microrheology involves tracking the motion of dispersed tracer particles of known size by Dynamic Light Scattering (DLS) and determining the rheological properties of the sample using the Generalized Stokes-Einstein Relation. DLS Microrheology is a passive microrheology technique, whereby the colloidal probe particles only undergo thermal fluctuations in a system at thermodynamic equilibrium.
DLS Microrheology is applicable for the rheological characterization of low viscosity and weakly-structured complex fluids, such as dilute solutions of polymers and surfactants through to concentrated protein formulations. For these types of materials, Microrheology offers significant advantages:
Applications of DLS Microrheology include:
Free access to exclusive content including webinars, presentations, application notes, technical notes, whitepapers and more. Enter your search term in the box and use the drop down boxes to filter the results.
This note discusses how DLS-based optical microrheology can be used to determine the rheological behavior of polymer solutions and the impact of tracer particle chemistry on the measured microrheological response.
The whitepaper discusses some basic principles of polymer solution rheology and how it can be measured and manipulated to optimize rheological behaviour
This poster presents an optimized methodology for making microrheology measurements on a Zetasizer Nano ZS/ZSP
This poster discusses ways to extend the shear rate and frequency range beyond traditional limits of a rotational rheometer range using creep testing, microrheology and microfluidics
This poster shows why rotational rheometry and microrheology are complementary tools for characterizing the viscoelastic properties of macromolecules in solutions
All information supplied within is correct at time of publication.
Malvern Instruments pursues a policy of continual improvement due to technical development. We therefore reserve the right to deviate from information, descriptions, and specifications in this publication without notice. Malvern Instruments shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance or use of this material.
Malvern and the 'hills' logo, Bohlin, Gemini, Insitec, ISys, Kinexus, Mastersizer, Morphologi, Rosand, SyNIRgi, Viscotek and Zetasizer, are International Trade Marks owned by Malvern Instruments Ltd.