WebSep 1, 2014 · The analysis by the BSCNF model also suggests that the viscous flow or the structural relaxation results by breaking the weaker parts of the bonds in the intermolecular connections. This picture ... WebMar 7, 2012 · According to the bond strength-coordination number fluctuation (BSCNF) model of viscosity proposed some years ago by one of the authors, viscosity is controlled …
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WebJul 1, 2013 · The model which is called bond strength–coordination number fluctuation (BSCNF) model [15], [16], [17] describes the temperature dependence of the viscosity that extends from strong to fragile glass-forming liquids in terms of the mean bond strength E0, the mean coordination number Z0, and the fluctuations, Δ E, Δ Z, of the structural units … WebMar 7, 2012 · The BSCNF model provides an expression for the temperature dependence of viscosity. It has been applied in oxides, semiconducting chalcogenides, metallic, and some polymeric systems [ 5 ]. In this model, the melt is considered to be formed by an agglomeration of structural units. pentax r326n
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WebUnderstanding the nature of this behavior is of fundamental interest and deserves attention. In the present study, the temperature dependence of the ionic conductivity in solids and liquids is analyzed using the Bond Strength–Coordination Number Fluctuation (BSCNF) model developed by ourselves. As mentioned above, the BSCNF model is based on the physical picture that viscous flow occurs due to the breaking or twisting the bonds connecting the structural units that form the melt. This picture can be connected to the molecular cooperativity which is quantified as NB = Eη / ( E0Z0 ). pentax rs 1000