METACLOAK SIGNED
Broadband cloaking and shielding of elastic waves in solids.
Total Cost €
0EC-Contrib. €
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Project "METACLOAK" data sheet
The following table provides information about the project.
| Coordinator |
IMPERIAL COLLEGE OF SCIENCE TECHNOLOGY AND MEDICINE
Organization address contact info |
| Coordinator Country | United Kingdom [UK] |
| Project website | http://www.imperial.ac.uk/people/a.colombi |
| Total cost | 183˙454 € |
| EC max contribution | 183˙454 € (100%) |
| Programme |
1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility) |
| Code Call | H2020-MSCA-IF-2014 |
| Funding Scheme | MSCA-IF-EF-ST |
| Starting year | 2015 |
| Duration (year-month-day) | from 2015-11-01 to 2017-10-31 |
Partnership
Take a look of project's partnership.
| # | ||||
|---|---|---|---|---|
| 1 | IMPERIAL COLLEGE OF SCIENCE TECHNOLOGY AND MEDICINE | UK (LONDON) | coordinator | 183˙454.00 |
Map
Project objective
In this project we aim to develop the theory to underpin the optimal design of metamaterial devices. We will test the theory by building a metamaterial cloak which surpasses current models in its combination of elastic wave protection and cloaking capacities at frequency band much larger (~1 kHz). The design of the cloak is based on a novel metamaterial that I have co-developed, consisting of a cluster of closely spaced sub-wavelength resonators fixed to a thin plate where flexural waves propagate. The effective properties of this cloak are generated by local resonance effects and they include, besides large band gaps, negative diffraction (refraction) index, sub-wavelength energy focusing and broad scalability in the sound and infrasound frequency range. Contrary to other studies, it does not require an unrealistic composite material to be realised, or a periodic arrangement of resonant elements and hence it should have real practical impact. Two innovative applications concerning control of mechanical vibrations, and seismology are proposed. To refine the modelling, detailed numerical simulations and development of optimisation schemes are required: this will benefit enormously from interaction with several groupings at Imperial College (in Physics, Mathematics and Mechanical Engineering), highly active in elastic waves and metamaterials, that have very relevant expertise. 3D numerical simulations giving quantitative analysis of the cloak properties and performance will guide the construction of laboratory models for experimental validation. The distribution and the structure of the resonators (vertical beams with nominal section much smaller than the wavelength) are the main parameters governing the performances of the cloak. The optimisation strategies that will be implemented will fine tune the cloak within a given frequency band and/or simplify the cloak design maintaining the same performance level.
Publications
| year | authors and title | journal | last update |
|---|---|---|---|
| 2016 |
Andrea Colombi Resonant metalenses for flexural waves in plates published pages: EL423-EL428, ISSN: 0001-4966, DOI: 10.1121/1.4967179 |
The Journal of the Acoustical Society of America 140/5 | 2019-06-07 |
| 2017 |
Andrea Colombi, Richard V. Craster, Daniel Colquitt, Younes Achaoui, Sebastien Guenneau, Philippe Roux, Matthieu Rupin Elastic Wave Control Beyond Band-Gaps: Shaping the Flow of Waves in Plates and Half-Spaces with Subwavelength Resonant Rods published pages: , ISSN: 2297-3079, DOI: 10.3389/fmech.2017.00010 |
Frontiers in Mechanical Engineering 3 | 2019-06-07 |
| 2017 |
D.J. Colquitt, A. Colombi, R.V. Craster, P. Roux, S.R.L. Guenneau Seismic metasurfaces: Sub-wavelength resonators and Rayleigh wave interaction published pages: 379-393, ISSN: 0022-5096, DOI: 10.1016/j.jmps.2016.12.004 |
Journal of the Mechanics and Physics of Solids 99 | 2019-06-07 |
| 2017 |
Andrea Colombi, Victoria Ageeva, Richard J. Smith, Adam Clare, Rikesh Patel, Matt Clark, Daniel Colquitt, Philippe Roux, Sebastien Guenneau, Richard V. Craster Enhanced sensing and conversion of ultrasonic Rayleigh waves by elastic metasurfaces published pages: , ISSN: 2045-2322, DOI: 10.1038/s41598-017-07151-6 |
Scientific Reports 7/1 | 2019-06-07 |
| 2016 |
Philippe Guéguen, Andrea Colombi Experimental and Numerical Evidence of the Clustering Effect of Structures on Their Response during an Earthquake: A Case Study of Three Identical Towers in the City of Grenoble, France published pages: 2855-2864, ISSN: 0037-1106, DOI: 10.1785/0120160057 |
Bulletin of the Seismological Society of America 106/6 | 2019-06-07 |
| 2016 |
Andrea Colombi, Philippe Roux, Sebastien Guenneau, Philippe Gueguen, Richard V. Craster Forests as a natural seismic metamaterial: Rayleigh wave bandgaps induced by local resonances published pages: , ISSN: 2045-2322, DOI: 10.1038/srep19238 |
Scientific Reports 6/1 | 2019-06-07 |
| 2016 |
Andrea Colombi, Daniel Colquitt, Philippe Roux, Sebastien Guenneau, Richard V. Craster A seismic metamaterial: The resonant metawedge published pages: , ISSN: 2045-2322, DOI: 10.1038/srep27717 |
Scientific Reports 6/1 | 2019-06-07 |
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