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Kim D, Kim M, Reidt S, Han H, Baghizadeh A, Zeng P, Choi H, Puigmartí-Luis J, Trassin M, Nelson BJ, Chen XZ, Pané S. Shape-memory effect in twisted ferroic nanocomposites. Nat Commun 2023; 14:750. [PMID: 36765045 PMCID: PMC9918508 DOI: 10.1038/s41467-023-36274-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 01/20/2023] [Indexed: 02/12/2023] Open
Abstract
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.
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Affiliation(s)
- Donghoon Kim
- grid.5801.c0000 0001 2156 2780Multi-Scale Robotics Lab, Institute of Robotics and Intelligent Systems, ETH Zurich, Tannenstrasse 3, 8092 Zurich, Switzerland
| | - Minsoo Kim
- grid.5801.c0000 0001 2156 2780Multi-Scale Robotics Lab, Institute of Robotics and Intelligent Systems, ETH Zurich, Tannenstrasse 3, 8092 Zurich, Switzerland
| | - Steffen Reidt
- grid.410387.9IBM Research Zurich, Säumerstrasse 4, 8803 Rüschilikon, Switzerland
| | - Hyeon Han
- grid.450270.40000 0004 0491 5558Max Plank Institute of Microstructure Physics, 06120 Halle (Saale), Germany
| | - Ali Baghizadeh
- grid.5801.c0000 0001 2156 2780The Scientific Center for Optical and Electron Microscopy (ScopeM), ETH Zurich, 8093 Zurich, Switzerland
| | - Peng Zeng
- grid.5801.c0000 0001 2156 2780The Scientific Center for Optical and Electron Microscopy (ScopeM), ETH Zurich, 8093 Zurich, Switzerland
| | - Hongsoo Choi
- grid.417736.00000 0004 0438 6721Department of Robotics & Mechatronics Engineering, DGIST-ETH Microrobotics Research Center, Daegu Gyeong-buk Institute of Science and Technology (DGIST), Daegu, Republic of Korea
| | - Josep Puigmartí-Luis
- grid.5841.80000 0004 1937 0247Departament de Ciència dels Materials i Química Física, Institut de Química Teòrica i Computacional, University of Barcelona (UB), 08028 Barcelona, Spain ,grid.425902.80000 0000 9601 989XInstitució Catalana de Recerca i Estudis Avançats (ICREA); Pg. Lluís Companys 23, Barcelona, 08010 Spain
| | - Morgan Trassin
- grid.5801.c0000 0001 2156 2780Department of Materials, ETH Zurich, 8093 Zurich, Switzerland
| | - Bradley J. Nelson
- grid.5801.c0000 0001 2156 2780Multi-Scale Robotics Lab, Institute of Robotics and Intelligent Systems, ETH Zurich, Tannenstrasse 3, 8092 Zurich, Switzerland
| | - Xiang-Zhong Chen
- Multi-Scale Robotics Lab, Institute of Robotics and Intelligent Systems, ETH Zurich, Tannenstrasse 3, 8092, Zurich, Switzerland.
| | - Salvador Pané
- Multi-Scale Robotics Lab, Institute of Robotics and Intelligent Systems, ETH Zurich, Tannenstrasse 3, 8092, Zurich, Switzerland.
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