Enhanced sensing and conversion of ultrasonic Rayleigh waves by elastic metasurfaces
Recent years have heralded the introduction of metasurfaces that advantageously combine the vision of sub-wavelength wave manipulation, with the design, fabrication and size advantages associated with surface excitation. An important topic within metasurfaces is the tailored rainbow trapping and sel...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
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Nature Publishing Group
2017
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| Online Access: | https://eprints.nottingham.ac.uk/44925/ |
| _version_ | 1848797029797462016 |
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| author | Colombi, Andrea Ageeva, Victoria Smith, Richard J. Clare, Adam T. Patel, Rikesh Clark, Matt Colquitt, Daniel Roux, Philippe Guenneau, Sebastien Craster, Richard V. |
| author_facet | Colombi, Andrea Ageeva, Victoria Smith, Richard J. Clare, Adam T. Patel, Rikesh Clark, Matt Colquitt, Daniel Roux, Philippe Guenneau, Sebastien Craster, Richard V. |
| author_sort | Colombi, Andrea |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Recent years have heralded the introduction of metasurfaces that advantageously combine the vision of sub-wavelength wave manipulation, with the design, fabrication and size advantages associated with surface excitation. An important topic within metasurfaces is the tailored rainbow trapping and selective spatial frequency separation of electromagnetic and acoustic waves using graded metasurfaces. This frequency dependent trapping and spatial frequency segregation has implications for energy concentrators and associated energy harvesting, sensing and wave filtering techniques. Different demonstrations of acoustic and electromagnetic rainbow devices have been performed, however not for deep elastic substrates that support both shear and compressional waves, together with surface Rayleigh waves; these allow not only for Rayleigh wave rainbow effects to exist but also for mode conversion from surface into shear waves. Here we demonstrate experimentally not only elastic Rayleigh wave rainbow trapping, by taking advantage of a stop-band for surface waves, but also selective mode conversion of surface Rayleigh waves to shear waves. These experiments performed at ultrasonic frequencies, in the range of 400–600 kHz, are complemented by time domain numerical simulations. The metasurfaces we design are not limited to guided ultrasonic waves and are a general phenomenon in elastic waves that can be translated across scales. |
| first_indexed | 2025-11-14T19:57:23Z |
| format | Article |
| id | nottingham-44925 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:57:23Z |
| publishDate | 2017 |
| publisher | Nature Publishing Group |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-449252020-05-04T18:57:29Z https://eprints.nottingham.ac.uk/44925/ Enhanced sensing and conversion of ultrasonic Rayleigh waves by elastic metasurfaces Colombi, Andrea Ageeva, Victoria Smith, Richard J. Clare, Adam T. Patel, Rikesh Clark, Matt Colquitt, Daniel Roux, Philippe Guenneau, Sebastien Craster, Richard V. Recent years have heralded the introduction of metasurfaces that advantageously combine the vision of sub-wavelength wave manipulation, with the design, fabrication and size advantages associated with surface excitation. An important topic within metasurfaces is the tailored rainbow trapping and selective spatial frequency separation of electromagnetic and acoustic waves using graded metasurfaces. This frequency dependent trapping and spatial frequency segregation has implications for energy concentrators and associated energy harvesting, sensing and wave filtering techniques. Different demonstrations of acoustic and electromagnetic rainbow devices have been performed, however not for deep elastic substrates that support both shear and compressional waves, together with surface Rayleigh waves; these allow not only for Rayleigh wave rainbow effects to exist but also for mode conversion from surface into shear waves. Here we demonstrate experimentally not only elastic Rayleigh wave rainbow trapping, by taking advantage of a stop-band for surface waves, but also selective mode conversion of surface Rayleigh waves to shear waves. These experiments performed at ultrasonic frequencies, in the range of 400–600 kHz, are complemented by time domain numerical simulations. The metasurfaces we design are not limited to guided ultrasonic waves and are a general phenomenon in elastic waves that can be translated across scales. Nature Publishing Group 2017-07-28 Article PeerReviewed Colombi, Andrea, Ageeva, Victoria, Smith, Richard J., Clare, Adam T., Patel, Rikesh, Clark, Matt, Colquitt, Daniel, Roux, Philippe, Guenneau, Sebastien and Craster, Richard V. (2017) Enhanced sensing and conversion of ultrasonic Rayleigh waves by elastic metasurfaces. Scientific Reports, 7 . 6750/1-6750/9. ISSN 2045-2322 https://www.nature.com/articles/s41598-017-07151-6 doi:10.1038/s41598-017-07151-6 doi:10.1038/s41598-017-07151-6 |
| spellingShingle | Colombi, Andrea Ageeva, Victoria Smith, Richard J. Clare, Adam T. Patel, Rikesh Clark, Matt Colquitt, Daniel Roux, Philippe Guenneau, Sebastien Craster, Richard V. Enhanced sensing and conversion of ultrasonic Rayleigh waves by elastic metasurfaces |
| title | Enhanced sensing and conversion of ultrasonic Rayleigh waves by elastic metasurfaces |
| title_full | Enhanced sensing and conversion of ultrasonic Rayleigh waves by elastic metasurfaces |
| title_fullStr | Enhanced sensing and conversion of ultrasonic Rayleigh waves by elastic metasurfaces |
| title_full_unstemmed | Enhanced sensing and conversion of ultrasonic Rayleigh waves by elastic metasurfaces |
| title_short | Enhanced sensing and conversion of ultrasonic Rayleigh waves by elastic metasurfaces |
| title_sort | enhanced sensing and conversion of ultrasonic rayleigh waves by elastic metasurfaces |
| url | https://eprints.nottingham.ac.uk/44925/ https://eprints.nottingham.ac.uk/44925/ https://eprints.nottingham.ac.uk/44925/ |