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DTSTART:20250330T030000
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DTSTAMP:20260424T143349Z
UID:67f8cbb124046485207346@ist.ac.at
DTSTART:20250515T150000
DTEND:20250515T160000
DESCRIPTION:Speaker: Corentin Coulais\nhosted by Jérémie Palacci\nAbstrac
 t: Active systems composed of energy-generating microscopic constituents a
 re a promising platform to create autonomous functional materials that can
 \, for example\, locomote through complex and unpredictable environments. 
 Yet coaxing these energy sources into useful mechanical work has proved ch
 allenging. Here we engineer active solids based on centimetre-scale buildi
 ng blocks that perform adaptive locomotion. These prototypes exhibit a non
 -variational form of elasticity characterized by odd moduli\, whose magnit
 ude we predict from microscopics using coarse-grained theories and which w
 e validate experimentally. When interacting with an external environment\,
  these active solids spontaneously undergo limit cycles of shape changes\,
  which naturally lead to locomotion such as rolling and crawling. The robu
 stness of the locomotion is rooted in an emergent feedback loop between th
 e active solid and the environment\, which is mediated by elastic deformat
 ions and stresses. As a result\, our active solids are able to accelerate\
 , adjust their gaits and locomote through a variety of terrains with a sim
 ilar performance to more complex control strategies implemented by neural 
 networks. Our work establishes active solids as a bridge between materials
  and robots and suggests decentralized strategies to control the nonlinear
  dynamics of biological systems\, soft materials and driven nanomechanical
  devices.
LOCATION:Moonstone Bldg / Ground floor / Seminar Room F (I24.EG.030f)\, IST
 A
ORGANIZER:cpetz@ist.ac.at
SUMMARY:Corentin Coulais: Adaptive locomotion of active solids
URL:https://talks-calendar.ista.ac.at/events/5701
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