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Modulation of Mechanical Interactions by Local Piezoelectric Effects

journal contribution
posted on 2023-07-26, 14:16 authored by Cameron P. Brown, Jennifer L. Boyd, Antony J. Palmer, Mick Phillips, Charles-Andre Couture, Maxime Rivard, Philippa A. Hulley, Andrew J. Price, Andreas Ruediger, Francois Légaré, Andrew J. Carr
Piezoelectricity is a well-established property of biological materials, yet its functional role has remained unclear. Here, a mechanical effect of piezoelectric domains resulting from collagen fibril organisation is demonstrated, and its role in tissue function and application to material design is described. Using a combination of scanning probe and nonlinear optical microscopy, a hierarchical structuring of piezoelectric domains in collagen-rich tissues is observed, and their mechanical effects are explored in silico. Local electrostatic attraction and repulsion due to shear piezoelectricity in these domains modulate fibril interactions from the tens of nanometre (single fibril interactions) to the tens of micron (fibre interactions) level, analogous to modulated friction effects. The manipulation of domain size and organisation thus provides a capacity to tune energy storage, dissipation, stiffness, and damage resistance.

History

Refereed

  • Yes

Volume

26

Issue number

42

Page range

7662-7667

Publication title

Advanced Functional Materials

ISSN

1616-3028

Publisher

Wiley

Language

  • other

Legacy posted date

2018-02-16

Legacy Faculty/School/Department

ARCHIVED Faculty of Science & Technology (until September 2018)

Note

A copy of this paper can be found in Oxford University's Research Archive at: https://ora.ox.ac.uk/objects/uuid:02a5311a-811e-4a67-a0c2-44e94b043124

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