Bandgap widening by disorder in rainbow metamaterials

By P. Celli, B. Yousefzadeh, Chiara Daraio, Stefano Gonella. Applied Physics Letters, 2017

135 citations recorded by the source corpus.

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.

Subfields: Biomedical Engineering, Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/79a8f3257de6f16ca54cdb8bbecc3923cac70967

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In Biomedical Engineering

1. N. J. Gerard
2. Yun Jing
3. Yuanchen Deng
4. Mourad Oudich

In Electrical and Electronic Engineering

1. N. J. Gerard
2. Yun Jing
3. Yuanchen Deng
4. Mourad Oudich

Citations in the corpus

• Tailoring Structure‐Borne Sound through Bandgap Engineering in Phononic Crystals and Metamaterials: A Comprehensive Review (2022, background): “[227] investigated BG widening using pillar resonators fixed on a plate, with different resonance frequencies Fig.”