In solid state physics, a bandgap (BG) refers to a range of energies where no electronic
states can exist. This concept was extended to classical waves, spawning the entire fields of …

Abstract Mechanical Metamaterials (MMs) are artificially designed structures with
extraordinary properties that are dependent on micro architectures and spatial tessellations …

Dielectric elastomers are active materials that undergo large deformations and change their
instantaneous moduli when they are actuated by electric fields. By virtue of these features …

This paper presents a comprehensive review of the literature and trends on the design of
periodic microstructural composite materials including photonic crystals (PtCs), phononic …

Flexible manipulation of elastic and acoustic waves through phononic meta-structured
materials (PMSMs) has attracted a lot of attention in the last three decades and shows a …

Active tuning of frequency bandgaps has received significant attention in the recent past. To
this end, soft compressible phononic composites have indicated great promise owing to their …

Photonic and phononic topological insulators (TIs) offer numerous opportunities for
manipulating light and sound with high efficiency and resiliency. On the other hand, inverse …

Full and directional band gap acoustic metamaterials offer the promising ability of controlling
and prohibiting propagation of acoustic/elastic waves in specified frequency ranges or …

Piezoelectric energy harvesting at multi-scales has received considerable attention as an
attractive powering technology which enables sustainable self-powered operation of small …

Designing multichannel narrow passband filters working at specified frequencies is very
challenging because a narrow defect band with non-zero group velocity must be achieved …