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

Authors :
Sadek H
Siddique SK
Wang CW
Chiu PT
Lee CC
Ho RM
Source :
ACS nano [ACS Nano] 2023 Aug 22; Vol. 17 (16), pp. 15678-15686. Date of Electronic Publication: 2023 Jun 30.
Publication Year :
2023

Abstract

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.

Details

Language :
English
ISSN :
1936-086X
Volume :
17
Issue :
16
Database :
MEDLINE
Journal :
ACS nano
Publication Type :
Academic Journal
Accession number :
37387522
Full Text :
https://doi.org/10.1021/acsnano.3c02796