In:
Advanced Materials, Wiley, Vol. 34, No. 13 ( 2022-04)
Abstract:
Oxide nanosprings have attracted many research interests because of their anticorrosion, high‐temperature tolerance, oxidation resistance, and enhanced‐mechanic‐response from unique helix structures, enabling various applications like nanomanipulators, nanomotors, nanoswitches, sensors, and energy harvesters. However, preparing oxide nanosprings is a challenge for their intrinsic lack of elasticity. Here, an approach for preparing self‐assembled, epitaxial, ferroelectric nanosprings with built‐in strain due to the lattice mismatch in freestanding La 0.7 Sr 0.3 MnO 3 /BaTiO 3 (LSMO/BTO) bilayer heterostructures is developed. It is found that these LSMO/BTO nanosprings can be extensively pulled or pushed up to their geometrical limits back and forth without breaking, exhibiting super‐scalability with full recovery capability. The phase‐field simulations reveal that the excellent scalability originates from the continuous ferroelastic domain structures, resulting from twisting under co‐existing axial and shear strains. In addition, the oxide heterostructural springs exhibit strong resilience due to the limited plastic deformation nature and the built‐in strain between the bilayers. This discovery provides an alternative way for preparing and operating functional oxide nanosprings that can be applied to various technologies.
Type of Medium:
Online Resource
ISSN:
0935-9648
,
1521-4095
DOI:
10.1002/adma.202108419
Language:
English
Publisher:
Wiley
Publication Date:
2022
detail.hit.zdb_id:
1474949-X
Permalink