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SUMMARY:Nanomaterials: Mechanical Behavior and Applications
DTSTART:20110518T110000
DTSTAMP:20260408T092649Z
UID:c42eeec9d37ac867169aaa4cecfd574eeac2399b97a98090ec1aaf1f
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr. Katerina E. Aifantis\, Aristotle University of Thessalonik
 i \nThe current talk will be divided into two portions related to the mech
 anical behavior of nanomaterials and their applications. In the first part
  a theoretical framework will be presented that can capture the micro-to-n
 ano scale transition by explicitly accounting for the presence of interfac
 es and grain boundaries. This framework can successfully interpret the str
 ess-strain response of micropillars and nanocrystals. Particularly\, the s
 tress-strain response during micropillar compression is characterized by m
 ultiple stress-strain bursts\, while the unique feature of nanocrystal def
 ormation is the inverse Hall-Petch size effects\, by which the strength of
  the nanocrystal decreases as the grain size decreases. In the second part
  the electrochemical and mechanical stability of novel Sn-C nanocomposite 
 anodes (for secondary Li-ion batteries) will be illustrated by presenting 
 electron microscopy images taken throughout electrochemical cycling. These
  observations can provide design criteria which suggest that the size of t
 he Sn nanocrystals must have a diameter below 20nm to allow for good capac
 ity retentions.
LOCATION:MEB010
STATUS:CONFIRMED
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