Home » Brookhaven » Light Scattering Overview

Light Scattering Overview

Light Scattering Overview

When Light Scattering is Important

Light Scattering occurs when polarizable particles in a sample are bathed in the oscillating electric field of a beam of light. The varying field induces oscillating dipoles in the particles and these radiate light in all directions. This important and universal phenomena is the basis for explaining why the sky is blue, why fog and emulsions are opaque and other observations. It has been utilized in many areas of science to determine particle size, molecular weight, shape, diffusion coefficients etc.

Brookhaven Instruments uses light scattering in four, distinct ways:

  • Static LS for determination of molecular and colloidal properties and structure functions for complex fluids
    (BI-MwA, BI-200SM / TurboCorr)
  • Dynamic LS for particle sizing and particle size distribution information as well as for protein characterization
    (90Plus, FOQELS, BI-200SM / TurboCorr, NanoDLS, BioDLS)
  • Electrophoretic LS for zeta potential distribution (ZetaPlus)
  • Phase Analysis LS for zeta potential in low mobility suspensions (ZetaPALS)

Of all these choices, if you are interested in multiangle, DLS and SLS, the BI-200SM goniometer and TurboCorr digital autocorrelator are the instruments of choice for basic research. Using primarily batch mode, the angular range is nominally 10° to 155° with 0.01° steps. Nothing comes close to this combination for the ability to study colloids and polymers.

This text was reproduced under the Creative Commons Attribution/Share-Alike License; additional terms may apply. See Terms of use for details

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: