Application Laboratory

 
 

In our application laboratory we characterize samples upon request. We measure:

 
 

Dynamic and Static Light Scattering (DLS/SLS)

 

Diffusing Wave Spectroscopy

(DWS)

  • Mean squared displacement

  • Loss and storage modulus

  • DWS particle size

 
 

Please download our sample submission form to request a sample measurement:

LS Instrument will contact you within a few days after submitting the signed form to discuss

details of your specific sample. Please do not send any samples without previous discussion.

 
 

Our characterisation methods

Dynamic (DLS) and static (SLS) light scattering:

  • The classical DLS and SLS goniometer set-up guarantees high resolution and accuracy with                            measurements at different scattering angles

  • Range for the particle size: from 1 nm to 10 micron

  • Sample turbidity: only for transparent samples

  • Scattering angle: 15° - 150°


Light scattering with suppression of multiple scattering:
Modulated 3D cross-correlation spectroscopy (3D DLS/SLS)

  • Extension of the classical DLS and SLS technique for turbid samples. The multiple light scattering from            turbid samples is suppressed by performing two modulating light scattering experiments simultaneously

  • Range for the particle size: from 1 nm to 10 micron

  • Sample turbidity : from transparent up to t < 100 cm-1

  • Scattering angle : 15° - 150°


Microrheology:
Diffusing Wave Spectroscopy (DWS)

  • In "Diffusing Wave Spectroscopy" the light propagation in turbid samples is described by a diffusion                equation. The main constraint of the method is a strong sample turbidity. Transparent samples                       may be measured by adding tracer particles

  • Range for the particle size: from 50 nm to 10 micron

  • Sample turbidity : from about t = 10 cm-1

  • Transmission- and backscattering geometry