Starfish-Inspired Diamond-Structured Calcite Single Crystals from a Bottom-up Approach as Mechanical Metamaterials

Inspired by knobby starfish, this work demonstrates a bottom-up approach for fabricating a calcite single-crystal (CSC) with a diamond structure by exploiting the self-assembly of the block copolymer and corresponding templated synthesis. Similar to the knobby starfish, the diamond structure of the...

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Bibliographic Details
Published in:ACS nano 2023-08, Vol.17 (16), p.15678-15686
Main Authors: Sadek, Hassan, Siddique, Suhail K., Wang, Chi-Wei, Chiu, Po-Ting, Lee, Chang-Chun, Ho, Rong-Ming
Format: Article
Language:English
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Summary:Inspired by knobby starfish, this work demonstrates a bottom-up approach for fabricating a calcite single-crystal (CSC) with a diamond structure by exploiting the self-assembly of the block copolymer and corresponding templated synthesis. Similar to the knobby starfish, the diamond structure of the CSC gives rise to a brittle-to-ductile transition. Most interestingly, the diamond-structured CSC fabricated exhibits exceptional specific energy absorption and strength with lightweight character superior to natural materials and artificial counterparts from a top-down approach due to the nanosized effect. This approach provides the feasibility for creating mechanical metamaterials with the combined effects of the topology and nanosize on the mechanical performance.
ISSN:1936-0851
1936-086X
DOI:10.1021/acsnano.3c02796