1. Pre-reading
Today, there are many thematic reviews on various facets of the design, production, applications, and functionality of metamaterials because this field is flourishing. To get a broad understanding of the subject, one must make an effort to read through all of this. Instead, in a single document, the 35 specialists review the state-of-the-art in nanophotonics, elastic, acoustic, and mechanical metamaterials allowing you to see the development of metamaterials as a whole and identify common themes in seemingly independent research areas.
2. Overview
Metamaterials, which are rationally designed composites with properties surpassing those of their components, have recently transformed many research areas. The rapid progress in the development of metamaterials enabled and stimulated by the advances in additive manufacturing and computational analysis techniques, made possible novel material systems and devices with previously unimaginable functionalities or superior performance, which are highly relevant in numerous applications. Tens of comprehensive papers have already reviewed an enormous number of metamaterial configurations, the broad ranges of their possible functionalities, and multiple applications with a focus on specific aspects of a single type of metamaterials from a historical point of view. This work, on the opposite, presents a general picture of the research activities in several types of metamaterials by highlighting similarities and common features in their design, analysis, and functionalities. Specifically, we overview nanophotonic, elastic, acoustic, and mechanical metamaterials. For each metamaterial type, we describe the current design strategies, relevant analysis techniques, emerging functionalities, and promising applications. We emphasize that the scalability of the fundamental equations of mechanics and acoustics enables the study of similar phenomena across a broad spectrum of problems ranging from control of light-matter interactions with phonons on a nanometric scale to mitigation of seismic waves of several hundred meters in wavelength. This review can thus be seen as the time slice of the state-of-the-art in metamaterials and is aimed at stimulating the interaction between scientists from different areas for fruitful cross-pollination of research ideas.
These results are published online with the title “Emerging topics in nanophononics and elastic, acoustic, and mechanical metamaterials: An overview” in Nanophotonics.
The corresponding authors of this article are Dr. Anastasiia O. Krushynska from Engineering and Technology Institute Groningen, University of Groningen and Dr. Daniel Torrent from GROC-UJI, Institut de Noves Tecnologies de la Imatge, Universitat Jaume I. This work is supported by the DYNAMO project (101046489) funded by the European Union, and is also part of the project PID2021-124814NB-C22, funded by MCIN/AEI/10.13039/501100011033/ “FEDER A way of making Europe”.
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