Small angle light scattering for rheologists

Microelectronics International

ISSN: 1356-5362

Article publication date: 1 April 2004




(2004), "Small angle light scattering for rheologists", Microelectronics International, Vol. 21 No. 1.



Emerald Group Publishing Limited

Copyright © 2004, Emerald Group Publishing Limited

Small angle light scattering for rheologists

Small angle light scattering for rheologists

Keywords: Rheology, Measurement

Physica's new small angle light scattering module (Rheo-SALS) gives material scientists a better understanding of their material's microstructure (Plate 3).

Plate 3 Physica's new small angle light scattering module

Anton Paar of the USA have introduced the new physica small angle light scattering module (Rheo-SALS), an expansion module for their MCR series of rheometers that allows simultaneous rheological and light scattering measurements.

While rheological measurements provide information on the bulk or macroscopic properties of a material, SALS can probe the microstructure of a material at the same time. Since bulk properties often depend on microstructure to a large extent, simultaneous measurements are beneficial for gaining a better understanding of a material's overall rheological behaviour.

Physica's Rheo-SALS features a complete small angle light scattering system including a laser block, temperature controlled rheo-optical measuring cell, focusing optics, and detection unit – including a CCD camera. These come as a complete, ready to run SALS module, or you can order any of the components separately. This modular concept allows you to build your optical set-up using components you may already have, such as a CCD camera.

Easy to set-up and align, the Physica SALS module comes complete with both parallel plate and concentric cylinder geometries. Both polarised and depolarised scattering experiments are possible, and specialised SALS image analysis software is also available.

For more information, contact: Anton Paar USA, Physica Rheology Division, 10215 Timber Ridge Drive, Ashland, VA 23005. Tel: 1-800-722- 7556; Web site:

Related articles