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Dynamics from step repulsions

In this model, reconstruction modifies the effective step interactions and thus the dynamics. Both the presence of a reconstructed terrace behind a given step and repulsive entropic or elastic interactions from the step behind make positive contributions... [Pg.205]

Fig. 14 a ISFs of samples with nearly constant polymer concentrations (cp 15.9 g/1) but increasing volume fractions. The systems dynamics slow down monotonically without any indication of a two-step decay. The latter would be expected for a repulsive glass transition driven by the cage effect. The system shows a sharp nonergodicity transition from a fluid sample at 8 = 0.239 and cp /c = 2.41 to a frozen sample at e = 0.248 and cp /c = 2.35. Reproduced with permission from [57]. b Determination of the glass transition volume fraction at Cp 15.9 g/1 via the rectified power law for the structural relaxations times t (Eq. 2) yields (b = 0.719... [Pg.264]

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See also in sourсe #XX -- [ Pg.202 ]



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Step dynamics

Step repulsions

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