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SUMMARY:Live 3D Modeling with Colloids
DTSTART:20171023T131500
DTEND:20171023T141500
DTSTAMP:20260408T080054Z
UID:cd125ea366747f2cad0b2fd07453d0dfdb2990d1265997ae9a8d3ba8
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Frans Spaepen\, School of Engineering and Applied Scienc
 es Harvard University\, Cambridge\nColloidal particles in suspension form 
 liquid\, crystalline and glassy phases similar to those formed by atoms. 
  Since the particles are “fat” (~1µm) and “slow” (~10Hz)\, they c
 an be individually tracked in space and time by confocal microscopy.  Den
 se colloidal systems therefore serve as "analog computers" to study the dy
 namics of defects in crystals (vacancies\, stacking faults\, dislocations\
 , grain boundaries)\, crystal nucleation\, crystal-liquid interfaces\, and
  the fundamental mechanisms of the deformation of glasses.\n\nReferences:\
 nK.E. Jensen\, D.A.Weitz and F. Spaepen\, "Local shear transformations in 
 deformed and quiescent hard-   sphere colloidal glasses"\, Physical Revi
 ew E 90: 042305 (2014).\nE. Maire\, E. Redston\, M. Persson Gulda\, D.A. W
 eitz and F. Spaepen\, "Imaging grain boundary grooves in       hard-s
 phere colloidal bi-crystals"\, Physical Review E94: 042604 (2016).\nJ. Spr
 akel\, A. Zaccone\, F. Spaepen\, P. Schall and D.A. Weitz\, ''Direct obser
 vation of entropic stabilization        of bcc crystals near melting
 ''\, Physical Review Letters 118: 088003 (2017).\n\nBio: Frans Spaepen is 
 John C. and Helen F. Franklin Professor of Applied Physics at Harvard Univ
 ersity.  He got his undergraduate degree\, in Metallurgical Engineering\,
  at the K.U. Leuven in 1971\, and a Ph.D. in Applied Physics from Harvard 
 University in 1975.  He joined the faculty of the Division of Applied Sci
 ences at Harvard in 1977 as Assistant Professor\, was appointed Associate 
 Professor in 1981\, and Full Professor in 1983.  In 1984 and 2007 he was 
 a Visiting Professor at the University of Leuven\, and in 2000-01 a Humbol
 dt visitor in Köln and Jülich.  From 1990 till 1998 he was Director of 
 the Harvard Materials Research Laboratory/Materials Research Science and E
 ngineering Center.  From 2002 to 2013 he was the Director of the Rowland 
 Institute at Harvard.  In 2008-09 he was Interim Dean of the School of En
 gineering and Applied Sciences and in 2009-10\, he was Interim Director of
  Harvard's Center for Nanoscale Systems.\n \nHis research interests span 
 a wide range of experimental and theoretical topics in materials science\,
  such as amorphous metals and semiconductors (viscosity\, diffusion\, mech
 anical properties)\, the structure and thermodynamics of interfaces (cryst
 al/melt\, amorphous/crystalline semiconductors\, grain boundaries)\, mecha
 nical properties of thin films\, the perfection of silicon crystals for me
 trological applications\,  and colloidal systems as models for the study 
 of dynamics and defects in crystals and glasses.\n \nHe is a Fellow of th
 e American Physical Society (Chairman\, Division of Materials Physics\, 19
 92)\, of the Materials Research Society (Councillor: 1986-89\; 1990-93\; C
 hairman\, Program Committee\, 1993-2000)\, and of the TMS. He is a member 
 of the National Academy of Engineering\, a member of the Vlaamse Academie 
 voor Wetenschappen en Kunsten\, an External Member of the Max-Planck Socie
 ty\, and a member of ASM.   He was co-editor of Solid State Physics\, an
 d an editorial board member of a number of materials science journals.\n\n
  
LOCATION:MXF 1 https://plan.epfl.ch/?room==MXF%201
STATUS:CONFIRMED
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