Analysis of the scatter growth in dispersive media with the use of dynamic light scattering

Abstract

Analysis of the structure functions of intensity fluctuations of scattered laser light was applied to monitor the phase separation in probed disperse media. UV-cured mixtures of a liquid crystal and prepolymer were studied during the formation of the structure of dispersive polymer-liquid crystal (DPLC) composites. The experimentally observed features of light beating induced by dynamic light scattering in DPLC systems (the scaling properties of the structure functions, the narrowing of the beating spectrum for certain weight fractions of the liquid-crystalline component) were interpreted in terms of the discrete scattering model using the results of statistical modeling.

Nanoinformatics approaches for information extraction and text mining in nanomedical research texts

“…Previous techniques, such as X-Ray Diffraction (XRD) or laser diffraction, generated low-quality images but could observe large diameters (<10 microns), which is not possible with more advanced techniques. Nanoparticle morphology can be observed using Dynamic Light Scattering (DLS) (Zimnyakov et al 2012), but the sample requires being prepared in an aqueous medium, with the consequent loss of some of its features and inability to study the nanoparticles individually, since in that means they form conglomerates. Other recent technologies, such as the Transmission Electron Microscopy (TEM) (Müller et al 2008) and the Scanning Electron Microscopy (SEM) (Müller et al 2011), provide two-dimensional images but are very expensive and also require a complex preparation of the sample.…”