Journal
SCRIPTA MATERIALIA
Volume 142, Issue -, Pages 83-87Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2017.08.037
Keywords
Metallic glasses; Kirigami structures; Elasticity; Strain energy loss; Cyclic loading
Categories
Funding
- Research Committee of the Hong Kong Polytechnic University [1-YWOR]
- Faculty of Engineering of the Hong Kong Polytechnic University [1-45-37-99QP]
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Some highly stretchable kirigami metallic glass (MG) structures with ultra-small strain energy loss during cyclic loading are developed. Less than 3% of strain energy loss is achieved after 1000 loading/unloading cycles, which is much smaller than the Kapton or nanocomposites-based kirigami structures. By optimizing the kirigami pattern design and smoothing the kirigami cuts may further reduce the stress energy loss, and one kirigami MG structure even shows no obvious strain energy loss. They are potentially useful for developing reversible mechanical metamaterials/devices or substrates of functional optoelectronic devices. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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