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SUMMARY:MechE Colloquium: From ferroelectric ceramics to their structural 
 analogs
DTSTART:20180227T121500
DTEND:20180227T131500
DTSTAMP:20260405T191640Z
UID:83060bba55b3ab91c40811eba7c4bad201ecfb0c6754f5de69f70589
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Dennis Kochmann\, Department of Mechanical and Process E
 ngineering\, ETH Zürich\nAbstract:\nWhat do active ceramics and soft stru
 ctures have in common? Two seemingly distinct systems serve to illustrate 
 the power of structural transformations\, and the challenges involved in m
 odeling those across scales.\nFerroelectric ceramics are key to most senso
 r and actuator technologies\, owing to their electro-mechanical coupling: 
 they deform under applied electric fields\, and they produce electric char
 ges under deformation. What is frequently exploited at the device level\, 
 has a complex origin at the atomic scale\, whose understanding hinges upon
  models and techniques that bridge from the atomic scale of angstroms and 
 femtoseconds all the way up to millimeters and seconds. We discuss how inf
 ormation from all scales can be combined into simulations that predict the
  macroscale material behavior in comparison with experiments. Once having 
 gained insight into the fundamental mechanisms\, we seek structural analog
 s of the ferroelectric switching\; i.e.\, we discuss how mechanical struct
 ures or metamaterials can be conceived\, which not only mimic some of the 
 atomic-scale phenomena of structural transformations qualitatively but can
  even be described quantitatively by the same models. In summary\, we disc
 uss – through theory\, simulations and experiments – the path from fer
 roelectric ceramics to their structural analogs.\n\nBio:\nProfessor Dennis
  Kochmann received his Diploma and his doctoral degree in Mechanical Engin
 eering from Ruhr-University Bochum in Germany. He also received a Master
 ’s degree in Engineering Mechanics from the University of Wisconsin-Madi
 son where he spent one year as a Fulbright fellow. He was a postdoc at the
  University of Wisconsin as well as a Humboldt fellow at Caltech before jo
 ining the faculty of the Aerospace Department at Caltech in September 2011
 . From 2011 to 2017 he was Assistant and later Full Professor of Aerospace
  at Caltech\, before moving to ETH Zurich as Professor of Mechanics and Ma
 terials in April 2017. His research focuses on the link between structure 
 and properties of a variety of materials and employs methods of theoretica
 l\, computational and experimental mechanics (including continuum and atom
 istic modeling\, scale-bridging\, multiscale models\, phase field techniqu
 es\, and experimental material characterization). He also develops novel m
 aterials with controllable properties by careful microstructural architect
 ure. His research has been recognized by\, among others\, the Bureau Prize
  in Solid Mechanics form IUTAM\, the Richard von Mises Prize by GAMM\, an 
 NSF CAREER Award\, the T.J.R. Hughes Young Investigator Award by the ASME 
 and\, recently\, an ERC Consolidator Grant.
LOCATION:MED 0 1418 https://plan.epfl.ch/?room==MED%200%201418
STATUS:CONFIRMED
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