Light Scattering

Companies Light Scattering

Sympatec GmbH, Germany

Sympatec develops, manufactures, sells, services and supports an innovative range of best instruments for particle size and shape analysis in laboratory and process for customers worldwide. With continuous innovations in the technological fields of laser diffraction, dynamic image analysis, ultraso more

Polymer Characterization, S.A., Spain

Polymer Char is devoted to the development of state-of-the-art instrumentation for Polyolefin Analysis. The company offers the broadest and most modern range of instruments and services for polymer analysis and more specifically, for structural characterization of polyolefins, such as Molar Mass Di more

Wyatt Technology Europe GmbH, Germany

Light scattering for the masses! The world's leading manufacturer of DAWN and miniDAWN multi-angle light scattering (MALS) instruments for determining the absolute molar masses and sizes of polymers and biopolymers in solution. These detectors, and Wyatt's ASTRA V GPC software, interface with any s more

Products Light Scattering

Break-through in High Temperature Polymer Separation Technology

The AF2000 HT Series is the world's first commercial HTFFF instrument available and was invented and patented by Postnova Analytics. High Temperature Field-Flow Fractionation is a brand new technology ideally suited for the advanced separation of high molar mass polymers, such as polyethylene and polypropylene. more

Thermal Field-Flow Fractionation: Ultra-Broad Polymer Separation

The new Postnova TF2000-MALS series is a truly unique and innovative technology for polymer/particle separation and characterization. The analysis can be achieved over a huge molar mass and size range and under extremely gentle conditions without any shear forces and sample degradation more

GPC-IR, The New Generation of High Temperature GPC/SEC

GPC-IR is a state-of-the-art High Temperature GPC equipment for Polyolefin analysis incorporating all the features demanded by the Users more

News Light Scattering

• A new Concept in Microscopy: Self-reconstructing Laser Beams

  It’s a familiar situation for all car drivers. In the autumn, when the roads are foggy, visibility drops below 50 metres. The light of the car’s headlights are scattered by the drops of fog, meaning we can’t see objects further away because the light can’t reach them. This everyday example illustrat more

• Empa grows 'sea urchin'-shaped structures: More efficient photocells thanks to nanostructured surfaces
  

  Processes which lend materials new characteristics are generally complicated and therefore often rather difficult to reproduce. So surprise turns to astonishment when scientists report on new methods which not only produce outstanding results despite the fact that they use economically priced starti more

• 'Instant acid' method offers new insight into nanoparticle dispersal in the environment and the body
  

  Using a chemical trick that allows them to change the acidity of a solution almost instantly, a team at the National Institute of Standards and Technology (NIST) has demonstrated a simple and effective technique for quantifying how the stability of nanoparticle solutions change when the acidity of t more

White papers Light Scattering

• Measuring particle size using modern laser diffraction techniques
  

  Many different techniques have been devised for determining particle size distribution, but for a wide range of industries laser diffraction has become the preferred choice. Laser diffraction, alternatively referred to as Low Angle Laser Light Scattering (LALLS), can be used for the non-destructive analysis of wet or dry samples, with particles in the size range 0.02 to 2000 micron and has inherent advantages which make it preferable to other options for many different materials. more

• Polyolefins: Determination of Molecular Weight and Branching Structure by GPC/SEC

  Polyethylene and Polypropylene are so-called Polyolefins. They are produced in large amounts every year. Depending on the process and catalyst used linear or branched polymers can be produced. In case of e. g. Polyethylene there are at least three polymer types: HDPE (High Density Polytheylene), LDPE (Low Density Polyethylene) and LLDPE (Linear Low Density Polytehylene). HDPE and LLDPE are made of linear or only slightly branched macromolecules with a high level of crystallinity. They form a dense structure in the final product. LDPE is made of highly branched molecules that form a final structure with low density due to a low degree of crystallinity. more

• Measurement of Nano particles and Proteins
  

  Colloid emulsions in their native environment require particle size determination in high concentration since there are concerns about changes in sample morphology upon dilution eg break up of aggregates. For proteins and other samples with very low concentration and for weakly scattering samples high sensitivity is required. New technologies offer both. more

Publications Light Scattering

• Dipole–octopole polarizability of sulfur hexafluoride from isotropic and anisotropic light scattering experiments

  Publication date: 20 May 2013 Source:Chemical Physics Letters, Volume 571 Author(s): M.S.A. El-Kader , T. Bancewicz The higher order dipole–octopole polarizability E of sulfur hexafluoride has been determined from isotropic and anisotropic collision-induced light scattering (CILS) experiment more

• Monoclonal Antibody Self-Association, Cluster Formation, and Rheology at High Concentrations

  The rheological properties of macromolecular and colloidal suspensions are dependent on the thermodynamic and kinetic parameters that define viscous flow, and remain an active field of study with broad implications in cellular biophysics, soft-matter theory, and biopharmaceutical technology. Here we more

• Insights into the binding of paclitaxel to human serum albumin: multispectroscopic studies

  ABSTRACT The interaction of paclitaxel with human serum albumin (HSA) was studied using fluorescence, resonance light scattering, ultraviolet‐visible, circular dichroism and Fourier transform infrared spectroscopy at pH 7.4. Fluorescence data revealed that the fluorescence quenching of HSA by pa more

Websites Light Scattering