Garau, M, Carta, G, Nieves, MJ, Jones, IS, Movchan, NV and Movchan, AB (2018) Interfacial waveforms in chiral lattices with gyroscopic spinners. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 474 (2215). ISSN 1364-5021

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Abstract

We demonstrate a new method of achieving topologically protected states in an elastic hexagonal system of trusses by attaching gyroscopic spinners, which bring chirality to the system. Dispersive features of this medium are investigated in detail, and it is shown that one can manipulate the locations of stop-bands and Dirac points by tuning the parameters of the spinners. We show that, in the proximity of such points, uni-directional interfacial waveforms can be created in an inhomogeneous lattice and the direction of such waveforms can be controlled. The effect of inserting additional soft internal links into the system, which is thus transformed into a heterogeneous triangular lattice, is also investigated, as the hexagonal lattice represents the limit case of the heterogeneous triangular lattice with soft links. This work introduces a new perspective in the design of periodic media possessing non-trivial topological features.

Item Type: Article
Additional Information: This is the accepted author manuscript (AAM). The final published version (version of record) is available online via The Royal Society at [insert hyperlink]. Please refer to any applicable terms of use of the publisher.
Uncontrolled Keywords: chiral systems, dispersion, elastic lattices, gyroscopic spinners, uni-directionalwaveforms
Subjects: Q Science > QC Physics
Divisions: Faculty of Natural Sciences > School of Computing and Maths
Related URLs:
Depositing User: Symplectic
Date Deposited: 14 Sep 2018 14:50
Last Modified: 14 Sep 2018 14:56
URI: http://eprints.keele.ac.uk/id/eprint/5303

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