Shape-memory effect in twisted ferroic nanocomposites.
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
10 Feb 2023
10 Feb 2023
Historique:
received:
25
08
2022
accepted:
20
01
2023
pubmed:
11
2
2023
medline:
11
2
2023
entrez:
10
2
2023
Statut:
epublish
Résumé
The shape recovery ability of shape-memory alloys vanishes below a critical size (~50 nm), which prevents their practical applications at the nanoscale. In contrast, ferroic materials, even when scaled down to dimensions of a few nanometers, exhibit actuation strain through domain switching, though the generated strain is modest (~1%). Here, we develop freestanding twisted architectures of nanoscale ferroic oxides showing shape-memory effect with a giant recoverable strain (>8%). The twisted geometrical design amplifies the strain generated during ferroelectric domain switching, which cannot be achieved in bulk ceramics or substrate-bonded thin films. The twisted ferroic nanocomposites allow us to overcome the size limitations in traditional shape-memory alloys and open new avenues in engineering large-stroke shape-memory materials for small-scale actuating devices such as nanorobots and artificial muscle fibrils.
Identifiants
pubmed: 36765045
doi: 10.1038/s41467-023-36274-w
pii: 10.1038/s41467-023-36274-w
pmc: PMC9918508
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
750Informations de copyright
© 2023. The Author(s).
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