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SUMMARY:IEM Distinguished Lecturers Seminar: The human ear: a living senso
 r
DTSTART:20230922T131500
DTEND:20230922T140000
DTSTAMP:20260916T060204Z
UID:4ed7b90588e899270648a1ce0a287a2213c9db3e4b881c84098399ae
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Fabrice Lemoult\, Institut Langevin\, ESPCI Paris - PSL\
 , France\nThe seminar will take place in ELA 2 and will be simultaneously
  broadcasted in the main auditorium in Neuchâtel Campus (MC A1 272).\n\
 nCoffee and cookies will be served at 13:00 before the seminar\, in front 
 of the two auditoriums. \n\nAbstract\nThe human ear is a fascinating sens
 or\, capable of detecting a range of sounds covering ten octaves in freque
 ncy and twelve orders of magnitude in amplitude. These exceptional propert
 ies are the result of non-linear phenomena that occur within the cochlea\,
  the organ of the inner ear responsible for the conversion of sound stimul
 i into nerve impulses. The understanding of such mechanisms is both a fund
 amental challenge and an opportunity to improve the performance of microph
 ones.\nIn this presentation\, we transpose results obtained in the field o
 f acoustic metamaterials to the context of hearing. With the help of a dev
 ice consisting of a succession of resonant tubes of increasing heights\, w
 e experimentally reproduce an analogue of the cochlear response. But\, wha
 t is fascinating in the biology of the cochlea is precisely its living cha
 racter. To mimic this property\, we create an "animated" metamaterial\, by
  adding in each resonator a feedback loop. The results show that our artif
 icial cochlea qualitatively reproduces the behavior of a biological one.\n
 \nBio\nFabrice Lemoult is an Associate Professor at Institut Langevin\, ES
 PCI Paris - PSL. His expertise encompasses acoustics\, elastic vibrations\
 , micro-waves\, and optics. He has conducted research on subwavelength foc
 using in metamaterials and on the introduction of topological properties i
 nto metamaterial lattices. Recent works devote to the propagation of elast
 ic waves in soft media which well mimic biological tissues or in the under
 standing of hearing.
LOCATION:ELA 2 https://plan.epfl.ch/?room==ELA%202 https://epfl.zoom.us/j/
 66144079474
STATUS:CONFIRMED
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