Instruments dynamic light-scattering

Dynamic light scattering (DLS) Translational diffusion coefficient, hydrodynamic or Stokes radius branching information (when Rh used with Rg) Fixed 90° angle instruments not suitable for polysaccharides. Multi-angle instrument necessary. [3]... 

Instrumentation and data processing techniques for systems employing dynamic light scattering for the examination of fine particle motion are currently under development. 

Chastek TQ, Beers KL, Amis EJ (2007) Miniaturized dynamic light scattering instrumentation for use in microfluidic applications. Rev Sci Instrum 78 072201... 

Fig. 7. Schematic diagram of the evanescent wave dynamic light-scattering instrumentation (Reproduced with permission from Fytas et al., Science 274 2041 Copyright (1996) American Association for the Advancement of Science)...

LabVIEW Front Panel display of g/function (top) and block diagram (bottom) for a Virtual Instrument (VI) for dynamic light scattering measurements. 

A laboratory made fiber optic dynamic light scattering instrument has been described together with a description of its use to study the kinetics of aging processes in emulsions [290]. The method is particularly useful for this purpose since it permits measurements in concentrated emulsions. 

The basic theory and discussion of results are covered in papers by Thomas [308]. who uses a Brookhaven Instrument Fiber Optics Quasi-Elastic Light Scattering System (BI-FOQELS) with dynamic light scattering obtained using the BI-DLS and diluted samples. 

Dynamic light scattering (DLS) measurements were performed on a DynaPro-801 instrument (Protein Solutions) and the data analyzed with the Autopro software package. All proteins were filtered through a 0.10 micron syringe filter and analyzed at 22°C. The translational difilisional coefficient (Dr) was obtained directly and the hydrodynamic radius (Rh) is derived by a rearrangement of the following equation ... 

After by diluting of dispersion to an appropriate volume with water, the cumulant particle size of liposomes was determined using a dynamic light scattering instrument as shown in Figs. 1 and 2. 

Control the size by dynamic light scattering (see Note 5). For measurements on a nanoZS (Malvern Instruments), dilute 5 pL of the particles obtained in a 500 pL cuve, start the measure in the automatic mode. 

The particle size was determined using dynamic light scattering (also termed photon correlation spectroscopy PCS), using a Malvern PCS instrument. The equilibrium sediment and cream volumes were recorded using measuring cylinders at room temperature, and viscoelastic measurements were made using a Bohlin VOR rheometer. 

Brookhaven, Coulter, Nicomp and Malvern all have commacially available instruments based on dynamic light scattering. AU employ software to recover... 

The visual appearance of the NP dilutions was confirmed by dynamic light scattering (DLS) measurements with a Zetasizer Nano ZS (Malvern Instruments Inc., UK) at 25 °C. The AuNPs solutions at pH 6.4 had 15-nm size distributions and strongly anionic zeta potentials >30 mV (Table 5.1). This potential implies that a strong electrostatic repulsive force existed, which was dominant over the attractive force, suppressing agglomeration and maintaining the well-dispersed nature of each of the AuNPs concentrations. 

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