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SUMMARY:MechE Seminar: Tropism in living filaments
DTSTART:20230208T124500
DTEND:20230208T134500
DTSTAMP:20260427T200451Z
UID:949d9270f7818500d14c88e72da1506ffcda827de9a1ab94c0d2cff2
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr. Hadrien Oliveri\, Mathematical Institute\, University of O
 xford \nAbstract: Many organisms produce elongated\, slender shapes called
  biological filaments. Plant shoots\, for example\, are active filaments t
 hat modify their shape dynamically in response to environmental signals\, 
 such as gravity or light. Similarly\, neuronal axons migrate during neurod
 evelopment towards their functional target\, following various external cu
 es including signalling chemicals and mechanical environment. In this talk
 \, I will first detail a multiscale mechanical theory for plant tropisms t
 hat captures the dynamic evolution of the overall shape of a plant in rela
 tion to its environment. This theory includes explicitly the transport of 
 hormones and cell growth which take place at the tissue scale in response 
 to the environment. From these microscopic processes\, the plant's overall
  shape can be obtained using homogenisation techniques. In the second part
  of my talk\, I will present a mathematical model for mechanical guidance 
 of nerves\, based on the theory of morphoelastic rods\, including axonal g
 rowth and durotaxis. Strikingly\, this model predicts that nerves are guid
 ed following a mechanical equivalent of Snell's law from geometric optics.
 \n\nBiography: Hadrien Oliveri is a postdoctoral research associate at Oxf
 ord Mathematical Institute and a Junior Research Fellow at Somerville Coll
 ege. In 2019 in obtained his PhD in Computer Science from the University o
 f Montpellier. Hadrien has broad interests in applied mathematics and mech
 anics. In particular\, he is interested in using mathematics to study fund
 amental and applied biological problems\, from neurodevelopment to plant g
 rowth and behaviours.
LOCATION:BM 5202 https://plan.epfl.ch/?room==BM%205202 https://epfl.zoom.u
 s/j/68718610380
STATUS:CONFIRMED
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