Issue 34, 2022

Scaling up ultrathin boat-graphane with the non-classical stiffness relation to macroscopic metamaterials

Abstract

Scaling up ultrathin nanosheets with unusual mechanical properties to macroscopic metamaterials is an intriguing topic considering the significant gap of their characteristic scales. In this regard, we investigate the relation between the in- and out-of-plane stiffness of monolayer boat-graphane in two principal axis directions by quantum mechanical calculations. A non-classical relation between the two types of stiffness is found, in opposition to the classical one for orthotropic thin plates. Analytical lattice dynamics models are proposed and suggest that the two kinds of stiffness stem from different covalent interaction sources, giving rise to the discrepancy. Guided by the geometry of boat-graphane and the model predictions, the non-classical relation successfully scales to macroscopic metamaterial plates, as justified by finite element simulations. The key structural parameters for successful scaling are also explored. The present work not only enriches our understanding of the nanomechanics of ultrathin nanosheets but also suggests a novel approach to construct mechanical metamaterials.

Graphical abstract: Scaling up ultrathin boat-graphane with the non-classical stiffness relation to macroscopic metamaterials

Article information

Article type
Paper
Submitted
28 Mar 2022
Accepted
27 Jul 2022
First published
29 Jul 2022

Nanoscale, 2022,14, 12455-12462

Scaling up ultrathin boat-graphane with the non-classical stiffness relation to macroscopic metamaterials

Y. Li, B. Chen, L. He, S. Huang and Y. Kuang, Nanoscale, 2022, 14, 12455 DOI: 10.1039/D2NR01689C

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements