Tunable photo-responsive elastic metamaterials

The metamaterial paradigm has allowed an unprecedented space-time control of various physical fields, including elastic and acoustic waves. Despite the wide variety of metamaterial configurations proposed so far, most of the existing solutions display a frequency response that cannot be tuned, once...

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Bibliographic Details
Published in:Nature communications 2020-05, Vol.11 (1), p.2576-2576, Article 2576
Main Authors: Gliozzi, Antonio S., Miniaci, Marco, Chiappone, Annalisa, Bergamini, Andrea, Morin, Benjamin, Descrovi, Emiliano
Format: Article
Language:English
Subjects:
639/301/1005
639/624/399/1015
639/766/25/3927
Acoustic waves
Bisphenol A
Elastic limit
Elastic waves
Electric filters
Electromagnetic wave filters
Energy gap
Engineering Sciences
Fourier transforms
Frequencies
Frequency dependence
Frequency response
Humanities and Social Sciences
Illumination
Lag time
Lasers
Magnetic fields
Materials
Mechanical stimuli
Metamaterials
multidisciplinary
Propagation
Radiation
Radio waves
Science
Science (multidisciplinary)
Stimuli
Switches
Three dimensional printing
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Summary:The metamaterial paradigm has allowed an unprecedented space-time control of various physical fields, including elastic and acoustic waves. Despite the wide variety of metamaterial configurations proposed so far, most of the existing solutions display a frequency response that cannot be tuned, once the structures are fabricated. Few exceptions include systems controlled by electric or magnetic fields, temperature, radio waves and mechanical stimuli, which may often be unpractical for real-world implementations. To overcome this limitation, we introduce here a polymeric 3D-printed elastic metamaterial whose transmission spectrum can be deterministically tuned by a light field. We demonstrate the reversible doubling of the width of an existing frequency band gap upon selective laser illumination. This feature is exploited to provide an elastic-switch functionality with a one-minute lag time, over one hundred cycles. In perspective, light-responsive components can bring substantial improvements to active devices for elastic wave control, such as beam-splitters, switches and filters. Here, the authors present a light-responsive elastic metamaterial whose transmission spectrum can be tuned by light stimuli. More specifically, we demonstrate that an appropriate laser illumination is effective in reversibly widening an existing frequency band gap, doubling its initial value.
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-020-16272-y