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SUMMARY:Localization of topologically protected elastic waves: from diffus
 e to punctual modifications of the domain - Marco Miniaci (CNRS (Centre na
 tional de la recherche scientifique))
DTSTART:20230525T124000Z
DTEND:20230525T132500Z
UID:TALK198928@talks.cam.ac.uk
DESCRIPTION:The introduction of structural defects in otherwise periodic m
 edia is well known to grant exceptional space control and localization of 
 waves in elastic media.\nIn this context\, a variety of designs have been 
 proposed so far. However most of them derive from contextual modifications
  that do not translate into a design paradigm due to the lack of a general
  theory.Few exceptions include designs endowed with topological dispersion
  bands\, which\, however\, require changes over substantial portions of th
 e structure.\nAnother possibility is to achieve localized modes by modifyi
 ng a parameter in only one unit cell in analogy to the "fractional electro
 nic charges".\nIn this talk I will present examples of both the aforementi
 oned approaches to achieve localized modes in elastic media.\nI will discu
 ss both their advantages and limitations.
LOCATION:Seminar Room 1\, Newton Institute
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