Liu, Yunpeng and Dong, Lin and Sabri, Mohd Faizul Mohd and Majid, Nazia Abdul and Ibrahim, Suriani (2024) Advancements in tunable and multifunctional metamaterial absorbers: a comprehensive review of microwave to terahertz frequency range. Journal of Physics D: Applied Physics, 57 (29). p. 293002. ISSN 0022-3727, DOI https://doi.org/10.1088/1361-6463/ad32a6.
Full text not available from this repository.Abstract
Over the past two decades, metamaterial absorbers have undergone significant advancements, evolving from microwave single-frequency designs to multi-frequency and broadband absorption, extending into the terahertz band. These absorbers have transitioned from unadjustable to adjustable and multifunctional configurations, enabled by the integration of adjustable materials, mechanical structures, and semiconductor devices. This article provides a comprehensive review of the progress achieved in the microwave to terahertz frequency range over the last five years. Key aspects covered include the absorbing mechanism of metamaterials in the microwave frequency band, with absorption efficiencies exceeding 90% for specific frequency ranges. The development of adjustable absorbers allows for frequency tunability within +/- 10% of the central frequency, while multifunctional absorbers enable concurrent control over absorption and reflection properties. In the terahertz regime, advanced electromagnetic simulations have led to absorber designs with bandwidths exceeding 50% of the central frequency, resulting in absorption efficiencies above 80% over the entire bandwidth. Integration of gallium nitride-based gallium nitride high electron mobility transistors provides fast switching speeds below 100 ns, facilitating rapid reconfiguration of absorber functionalities. These advancements in metamaterial absorbers offer promising prospects for intelligent and integrated designs in future applications.
| Item Type: | Article |
|---|---|
| Funders: | Ministry of Education, Malaysia (IIRG018D-2019) |
| Uncontrolled Keywords: | metamaterial; absorber; adjustable; multifunctional; gallium nitride |
| Subjects: | Q Science > QC Physics T Technology > TJ Mechanical engineering and machinery T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Faculty of Engineering > Department of Mechanical Engineering Faculty of Science > Institute of Biological Sciences |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 18 Sep 2024 07:35 |
| Last Modified: | 18 Sep 2024 07:35 |
| URI: | http://eprints.um.edu.my/id/eprint/45122 |
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