Macroscopic Facilitation of Glassy Relaxation Kinetics: Ultra Stable Glass Films with Front-Like Thermal Response - Condensed Matter > Soft Condensed MatterReportar como inadecuado




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Abstract: The recent experimental fabrication of ultra stable glass films via vapourdeposition Science 315, 353 2007 and the observation of front-like responseto the annealing of these films Phys.Rev.Lett. 102, 065503 2009, haveraised important questions about the possibility of manipulating the propertiesof glass films and addressing fundamental questions about kinetics andthermodynamics of amorphous materials. Central to both of these issues is theneed to establish the essential physics that governs the formation of theultra-stable films and their subsequent response. In this paper we demonstratethat a generic model of glassy dynamics can account for the formation ofultra-stable films, the associated enhancement of relaxation rates by a factorof 10^5, the observation of front-like response to temperature jumps and thetemperature dependence of the front velocity



Autor: Sébastien Léonard, Peter Harrowell

Fuente: https://arxiv.org/







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