Research Progress of Crystalline Metamaterials

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Inorganic Crystalline Materials".

Deadline for manuscript submissions: 20 June 2025 | Viewed by 936

Special Issue Editor


E-Mail Website
Guest Editor
Space Science Centre (ANGKASA), Institute of Climate Change (IPI), Research Complex Building, Level 2 & 3, Universiti Kebangsaan Malaysia, 43600 UKM, Bangi, Malaysia
Interests: crystalline metamaterials; microwave metamaterials; programmable metamaterials; tunable and reconfigurable metamaterials; terahertz metamaterials; thermal metamaterials; information metamaterials; sensing device
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

A metamaterial is any substance that has been designed to possess a characteristic that is exceptional in naturally existing materials. Furthermore, the qualities of these artificially made composite materials are determined by their internal structure rather than their chemical composition in contrast with conventional materials. Because of this, the development of metamaterial structures provides properties and abilities that are challenging to accomplish with traditional materials. Initial research on unconventional materials focused on the unusual electromagnetic properties of isotopic, homogenous metamaterials, such as reversed Cherenkov radiation, the negative refractive index, and reversed Doppler effect, where the values of permeability and permittivity were negative. The primary cause of metamaterials’ great interest is their remarkable effect on light traveling through them. Metamaterial technology has the potential to be advantageous to almost every research field currently in development due to its unique acoustical, electromagnetic, optical, and mechanical properties. These fields include telecommunications, metadevices, defense, biomedical imaging, sensing, electromagnetic absorption reduction, radar-cross section reduction, crystalline metamaterial, etc. Even though crystalline metamaterials have a subwavelength spatial scale, which often entails ignoring their structure, they can nonetheless acquire complicated foreign features due to multiple scattering. In addition, this material may contribute to the unique importance of resonant multiple scattering in prompting novel and intriguing features, namely topological characteristics, at the deep subwavelength scale. The purpose of this Special Issue is to provide a platform for recent developments in the fields of crystalline metamaterials theory, numerical modeling, experiments, and current work in coding and conventional metamaterials-based applications. The growth of the future electronic industry is aided by the innovative material features and device capabilities made possible by metamaterial technology.

Prof. Dr. Mohammad Rashed Iqbal Faruque
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Crystals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2100 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • metamaterials
  • coding metamaterial
  • metadevices
  • cloaking
  • radar cross-section reduction
  • electromagnetic absorbtion reduction
  • imaging
  • sensing

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • e-Book format: Special Issues with more than 10 articles can be published as dedicated e-books, ensuring wide and rapid dissemination.

Further information on MDPI's Special Issue policies can be found here.

Published Papers (1 paper)

Order results
Result details
Select all
Export citation of selected articles as:

Research

15 pages, 4255 KiB  
Article
Numerical Investigation of Ultra-Wide Low-Frequency Wave Attenuation Using Seismic Metamaterials with Auxetic Slender Strips
by Haosheng Liu and Hongbo Zhang
Crystals 2025, 15(1), 13; https://doi.org/10.3390/cryst15010013 - 26 Dec 2024
Viewed by 606
Abstract
Seismic metamaterials are an emerging vibration-damping technology, yet concentrating the bandgap in the low-frequency range remains challenging due to the constraints imposed by lattice size. In this study, we numerically investigated seismic metamaterials connected by auxetic (negative Poisson’s ratio) slender strips, which exhibit [...] Read more.
Seismic metamaterials are an emerging vibration-damping technology, yet concentrating the bandgap in the low-frequency range remains challenging due to the constraints imposed by lattice size. In this study, we numerically investigated seismic metamaterials connected by auxetic (negative Poisson’s ratio) slender strips, which exhibit an exceptionally wide low-frequency band gap for vibration isolation. Using a finite element method, we first performed a comparative analysis of several representative seismic metamaterial configurations. The results showed that the auxetic thin strip-connected steel column structure demonstrated outstanding performance, with the first complete band gap starting at 1.61 Hz, ending at 80.40 Hz, spanning a width of 78.79 Hz, and achieving a relative bandwidth of 192.15%. Notably, while most existing designs feature lattice constants in the ten-meter range (with the smallest around two meters), our proposed structure achieves these results with a lattice constant of only one meter. We further analyzed the transmission characteristics of the steel column structure, both with and without concrete filling. Interestingly, significant vibration attenuation, approaching 70 dB, was observed below the first complete band gap (approximately 0.22–1.17 Hz), even without the use of concrete. By comparing the flexural wave band gap with the transmission spectrum, we attributed this attenuation primarily to the presence of the band gap, a phenomenon often overlooked in previous studies. This attenuation at lower frequencies highlights the potential for effectively reducing low-frequency vibration energy. To further enhance the attenuation, the number of periods in the propagation direction can be increased. Additionally, we systematically explored the influence of geometric parameters on the first complete band gap. We found that optimal results were achieved with a slender strip length of 0.05 m, its width between 0.05 and 0.1 m, and a steel structure width of 0.1 m. Our findings underscore the critical role of auxetic thin strips in achieving broadband low-frequency vibration isolation. The approach presented in this study, along with the discovery of low-frequency flexural wave band gaps, provides valuable insights for seismic engineering and other applications requiring effective vibration reduction strategies. Full article
(This article belongs to the Special Issue Research Progress of Crystalline Metamaterials)
Show Figures

Figure 1

Back to TopTop