Journal
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS
Volume 236, Issue 11, Pages 2171-2210Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/1464420721995858
Keywords
Metamaterial; periodic composite; acoustic wave; chiral; local resonance; phononic
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Funding
- Research Council of the Shahid Chamran University of Ahvaz [SCU.EM99.98]
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Metamaterials are man-made substances with unique spatial alternations in their constituent components, widely used in modifying properties of materials. They induce low/high-frequency band gaps to control wave propagations with different wavelengths and are frequently applied in various engineering fields such as microwave, waveguides, and antennas.
Metamaterials are man-made substances with unique spatial alternations in their constituent components. They are widely used in modifying elastic, acoustic, or electromagnetic properties of materials. Metamaterials induce low/high-frequency band gaps to control wave propagations with different wavelengths and are also frequently applied in microwave engineering, waveguides, dispersion compensation, smart antennas, and lenses. For instance, permittivity and permeability of the metamaterials can take positive or negative values. Due to smaller single-cell dimensions than their wavelength, the selective frequency of surface-based metamaterials is used for waveguiding. The need for adjustable bandgaps can also lead to a plethora of research into metamaterials' tunability for structures that operate at different speeds. In this article, recent studies in the field of metamaterials and their applications are reviewed. The piezoelectric metamaterials and the electromagnetic metamaterials are introduced that is followed by a review of new types of chiral metamaterials. Additionally, absorber, nonlinear, terahertz, tunable, photonic, selective surface-based frequency in acoustic metamaterials are comparedand some remarks on tuning bandgaps methods in locally resonant metamaterials are provided.
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