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Bandgap widening by disorder in rainbow metamaterials

Celli, Paolo and Yousefzadeh, Behrooz and Daraio, Chiara and Gonella, Stefano (2019) Bandgap widening by disorder in rainbow metamaterials. Applied Physics Letters, 114 (9). Art. No. 091903. ISSN 0003-6951. doi:10.1063/1.5081916.

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Stubbed plates, i.e., thin elastic sheets endowed with pillar-like resonators, display subwavelength, locally resonant bandgaps that are primarily controlled by the intrinsic resonance properties of the pillars. In this work, we experimentally study the bandgap response of a tunable heterogeneous plate endowed with reconfigurable families of pillars. We demonstrate that, under certain circumstances, both the spectrum of resonant frequencies of the pillars and their spatial arrangement influence the filtering characteristics of the system. Specifically, both spatially graded and disordered arrangements result in bandgap widening. Moreover, the spectral range over which attenuation is achieved with random arrangements is on average wider than the one observed with graded configurations.

Item Type:Article
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URLURL TypeDescription Paper Information
Celli, Paolo0000-0001-7839-7472
Yousefzadeh, Behrooz0000-0002-6973-717X
Daraio, Chiara0000-0001-5296-4440
Additional Information:© 2019 AIP Publishing LLC. Submitted: 17 November 2018. Accepted: 11 February 2019. Published Online: 6 March 2019. S.G. and P.C. acknowledge support from the National Science Foundation (CMMI-1266089). P.C. acknowledges support from the University of Minnesota Doctoral Dissertation Fellowship. B.Y. acknowledges support from the Natural Science and Engineering Research Council of Canada through a postdoctoral fellowship. C.D. and B.Y. acknowledge partial support from the National Science Foundation (EFRI-1741565). We thank W. Zhang, N. Bausman, M. Turos, A. Palermo, V. Tournat, and A. Cebrecos for their help and fruitful discussions.
Funding AgencyGrant Number
University of MinnesotaUNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Issue or Number:9
Record Number:CaltechAUTHORS:20190306-082417357
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Official Citation:Bandgap widening by disorder in rainbow metamaterials. Paolo Celli, Behrooz Yousefzadeh, Chiara Daraio, and Stefano Gonella. Applied Physics Letters 2019 114:9; doi: 10.1063/1.5081916
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:93567
Deposited By: George Porter
Deposited On:06 Mar 2019 16:39
Last Modified:16 Nov 2021 16:59

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