Talk given by Dr. Julian Helfferich Institute of Molecular Engineering University of Chicago Chicago, USA Abstract: Ordinary glasses are typically prepared by cooling a liquid at a rate large enough to avoid crystallization and the standard techniques aimed at creating better-relaxed glasses consist of either cooling it at a slower cooling rate or letting it age over extended periods of time. Recent experiments have, however, highlighted a different strategy towards well-relaxed glasses: Glasses prepared by vapor deposition can yield glass films of extraordinary thermodynamic and kinetic stability, resembling ordinary glasses aged for several centuries. This stability is evident in a wide array of observables, including a higher onset temperature, increased density, and reduced enthalpy. Additional to their unique mechanic properties, ultrastable glasses display fascinatingly complex dynamics, making them a promising candidate not only for application, but also to address the fundamental questions of glass dynamics. In this talk, I will introduce the basic experimental and numerical techniques to prepare and study ultrastable glasses and discuss their unique dynamic properties.

This event is part of the eventgroup INT Talks

Homepage
https://www.int.kit.edu/events.php

Speaker
Dr. Julian Helfferich

University of Chicago
https://ime.uchicago.edu/

Organizer
Prof. (apl.) Dr. Wolfgang Wenzel
Institute of Nanotechnology (INT)
Karlsruhe Institute of Technology (KIT)
Eggenstein-Leopoldshafen
Mail: wolfgang wenzel ∂does-not-exist.kit edu

Targetgroup
Interested / Everyone