Theoretical Physics Colloquium
Universality of Persistence Exponents in Two-Dimensional Ostwald Ripening
by Prof. Joel Stavans (Weizmann Institute of Science)
Thursday, January 7, 2010
from
to
(Asia/Kolkata)
at Colaba Campus ( A-304 )
at Colaba Campus ( A-304 )
Description |
We measured persistence exponents of Ostwald ripening in two dimensions, as a function of the area fraction occupied by coarsening domains. The values of the persistence exponents in two systems, succinonitrile and brine, quenched to their liquid-solid coexistence region, compare well with one another, providing compelling evidence for the universality of the one-parameter family of exponents. For small volume fraction, exponents are proportional to the volume fraction with a constant of proportionality 0:39, as predicted by a model that assumes no correlations between evolving domains. These constitute the first measurements of persistence exponents in the case of phase transitions with a conserved order parameter. |
Organised by | Prof. Deepak Dhar |
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