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SUMMARY:IMX Seminar Series - Atomistic Modeling
DTSTART:20221003T131500
DTEND:20221003T141500
DTSTAMP:20260407T081813Z
UID:bf04e77326112a9bbd9b9be410584674c85875d0f58cc6f623f54468
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Peter Derlet\, PSI\, Switzerland\nMetallic glasses are a
  class of amorphous materials that are strongly out of equilibrium. Their 
 remarkable thermo-mechanical properties\, including a very robust elastic 
 regime\, make them industrially relevant for applications in extreme envir
 onments. Despite the lack of long range order\, structural heterogeneities
  do exist\, which are closely related to spatial variations in relaxation 
 time-scales and therefore properties of the disordered solid. Indeed\, rel
 axation time-scales are intimately connected to the degree of relaxation o
 f the glassy structure which in turn can be controlled either through a th
 ermal and/or mechanical processing protocol. In this talk\, I will present
  atomistic simulations spanning several microseconds of physical time\, ti
 mescales which begin to probe dissipation\, transport and ultimately the t
 hermally activated micro-plasticity of a model glass. The atomic-scale pro
 cesses facilitating these phenomena\, and more generally glass structural 
 evolution\, will be discussed in terms of the seminal works of Frank\, Kas
 per\, Turnbull and Nelson\, demonstrating that despite the strong disorder
 \, amorphous structure is strongly constrained\, and it such constraints t
 hat play a fundamental role in determining the microscopic properties of a
  glass.\nBio: In 1995\, PD obtained a PhD in Quantum Electrodynamics from 
 the physics Department at Monash university\, Melbourne\, Australia. After
  a postdoc studying the electronic properties of porous silicon\, he moved
  to Trondheim-Norway for a postdoc working on Series 6000 Aluminium alloys
 . In 2000\, he became a staff-scientist at the Paul Scherrer Institute\, p
 erforming atomistic simulations focused on nano-crystalline metals. In 200
 8\, he joined the Condensed Matter Theory group at PSI\, shifting his rese
 arch interests to more general forms of structural and magnetic disorder w
 ith a focus on bulk metallic glasses\, heavily irradiated materials\, and 
 spin-ice physics in both two dimensional magnetic meta-materials and bulk 
 pyrochlores. He has been a visiting scientist at the Culham Centre for Fus
 ion Energy\, Oxford-UK\, and at the Federal Institute of Materials Researc
 h and Testing\, Berlin-Germany. Since 2019\, PD is an adjunct professor wi
 thin the Materials Department at ETH Zurich.
LOCATION:MXF 1 https://plan.epfl.ch/?room==MXF%201
STATUS:CONFIRMED
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