Metamaterial architecture from a self-shaping carnivorous plant

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

  • Caterina A.M. La Porta
  • Maria Chiara Lionetti
  • Silvia Bonfanti
  • Simone Milan
  • Cinzia Ferrario
  • Daniel Rayneau-Kirkhope
  • Mario Beretta
  • Maryam Hanifpour
  • Umberto Fascio
  • Miriam Ascagni
  • Larissa De Paola
  • Zoe Budrikis
  • Mario Schiavoni
  • Ermelinda Falletta
  • Alessandro Caselli
  • Oleksandr Chepizhko
  • Ausonio Tuissi
  • Alberto Vailati
  • Stefano Zapperi

Organisaatiot

  • University of Milan
  • University of Pavia
  • Innsbruck Medical University
  • CNR-ENEA-EURATOM Association

Kuvaus

As meticulously observed and recorded by Darwin, the leaves of the carnivorous plant Drosera capensis L. slowly fold around insects trapped on their sticky surface in order to ensure their digestion. While the biochemical signaling driving leaf closure has been associated with plant growth hormones, how mechanical forces actuate the process is still unknown. Here, we combine experimental tests of leaf mechanics with quantitative measurements of the leaf microstructure and biochemistry to demonstrate that the closure mechanism is programmed into the cellular architecture of D. capensis leaves, which converts a homogeneous biochemical signal into an asymmetric response. Inspired by the leaf closure mechanism, we devise and test a mechanical metamaterial, which curls under homogeneous mechanical stimuli. This kind of metamaterial could find possible applications as a component in soft robotics and provides an example of bioinspired design.

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut18777-18782
Sivumäärä6
JulkaisuProceedings of the National Academy of Sciences of the United States of America
Vuosikerta116
Numero38
TilaJulkaistu - 17 syyskuuta 2019
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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