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New routes to amorphous structures
David Weitz
Harvard
This talk will describe unusual phase transitions that take advantage of soft matter. One system is a new method for producing amorphous structure from materials that exhibit a very high propensity for crystallization. This is achieved through very rapid quenching of a precipitating solid through evaporation of the solvent in a spray-drying configuration. A second systems is a nearly perfect colloidal crystal that does not possess any interfaces that induce melting. As a result, melting is delayed and the melting transition attains many hallmarks of a second order transition.