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CATEGORIES:Isaac Newton Institute Seminar Series
SUMMARY:Beyond-Nearest-Neighbour Metamaterials - Gregory C
 haplain (University of Exeter)
DTSTART;TZID=Europe/London:20230518T133000
DTEND;TZID=Europe/London:20230518T150000
UID:TALK199270AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/199270
DESCRIPTION:Co Authors: Timothy A. Starkey\, Daniel B. Moore\,
  Ian R. Hooper\, J. R. Sambles\, Alastair P. Hibbi
 ns\nAbstract:&nbsp\;\nEngineering the dispersion o
 f acoustic or elastic waves using coupling terms t
 hat spatially reach beyond the immediate local env
 ironment\, or unit cell\, is an &lsquo\;emerging t
 opic&rsquo\; in metamaterial design. In this talk\
 , we present the background and motivations of thi
 s 'new trend' along with experimental studies in a
 coustic and elastic systems that realise beyond-ne
 arest-neighbour coupling to introduce dispersion r
 elations with extrema within the first Brillouin z
 one. In acoustics\, we use mixed waveguide-surface
  wave coupling\, whilst in elastics we develop an 
 elastic scaffold (with a recognisable popular Brit
 ish construction kit)\, with reconfigurable coupli
 ng elements and demonstrate the effects of structu
 ral symmetries on these exotic dispersion relation
 s.
LOCATION:Seminar Room 2\, Newton Institute
CONTACT:
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