| dc.contributor.author | Tremain, B | |
| dc.contributor.author | Hooper, IR | |
| dc.contributor.author | Sambles, JR | |
| dc.contributor.author | Hibbins, AP | |
| dc.date.accessioned | 2018-08-07T10:25:20Z | |
| dc.date.issued | 2018-05-08 | |
| dc.description.abstract | A planar metallic metasurface formed of spiral elements is shown to support an isotropic backward wave over a narrow band of microwave frequencies. The magnetic field of this left-handed mode is mapped experimentally using a near-field scanning technique, allowing the anti-parallel group and phase velocities to be directly visualised. The corresponding dispersion relation and isofrequency contours are obtained through Fourier transformation of the field images. | en_GB |
| dc.identifier.citation | Vol. 8, pp. 7098 - | en_GB |
| dc.identifier.doi | 10.1038/s41598-018-25469-7 | |
| dc.identifier.uri | http://hdl.handle.net/10871/33685 | |
| dc.language.iso | en | en_GB |
| dc.publisher | Nature Publishing Group | en_GB |
| dc.relation.url | https://www.ncbi.nlm.nih.gov/pubmed/29740039 | en_GB |
| dc.rights | © The Author(s) 2018. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. | en_GB |
| dc.title | Isotropic Backward Waves Supported by a Spiral Array Metasurface. | en_GB |
| dc.type | Article | en_GB |
| dc.date.available | 2018-08-07T10:25:20Z | |
| dc.identifier.issn | 2045-2322 | |
| exeter.place-of-publication | England | en_GB |
| dc.description | This is the final version of the article. Available from Nature Publishing Group via the DOI in this record. | en_GB |
| dc.identifier.journal | Scientific Reports | en_GB |
