Local order model

With this local-order model,only two adjustable parameters D and R) were needed to obtain reason-... 

Despite the formation of clathrate-like clusters and complete 512 cages during these simulations, the increased ordering observed from the radial distribution functions and local phase assignments resulted in the authors concluding that their simulation results are consistent with a local order model of nucleation, and therefore do not support the labile cluster model. 

Fig. 3a. Ordered Mg distribution in Ca7Mg7 25Sii4 - view of a quarter of the ordered model structure along the [001] direction (Si large grey circles, Ca medium sized grey circles, Mg open and black small circles the filled circles show a consistent local ordering model for the Mg atoms avoiding exclusively short distances and preserving the overall composition)...

An experimentally proved solid polymers structure fractality serves as another reason in favour of the local order model. As follows from Figure 2.1 data, fractality requires density p gradient on definite length scales L The cluster model corresponds... 

The Description of Crosslinked Rubbers within the Frameworks of Fractal Analysis and Local Order Models... 

The application of fractal analysis for the description of the behaviour of rubbers is difficult because of the fact that these materials are (or are close to) Euclidean objects. Nevertheless, at present the theory of elasticity and entropic high-elasticity of fractals is developed, which differs principally from the classical theory. The change of molecular mobility, characterised by fractal dimension of a chain part between crosslinking nodes, is of interest for rubbers. Lastly, local order models can be used successfully for quantitative description of the nucleation process of crystalline regions and the melting temperature of rubbers. These and some other questions will be considered in detail in the present chapter. 

Local-order model Based on the observation from SANS experiments on Nation samples and excellent agreanent between the theoretical and... 

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