Design, fabrication and characterization of flexible and ultrathin microwave metamaterial absorber

Borah, Dipangkar; Bhattacharyya, Nidhi S.

doi:10.1109/iespc.2017.8071890

Cited by 11 publications

(5 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Between these two horn antennas, a fabricated prototype of the MMA structure is placed to validate the simulated results from 8 to 12 GHz with the fabricated one. 28,29 One of the two horns described above was used to send the multiband microwave signal to the sample, and the other was used to receive the microwave signal from the sample in this measurement. Because of experimental constraints, the source and receiving horns were placed on the same side of the sample, and both were inclined at a slight angle of about 5° with respect to the normal on the sample surface.…”

Section: Fabrication Resultsmentioning

confidence: 99%

An Ultrathin Microwave Metamaterial Absorber for C, X, and Ku Band Applications

Elakkiya

Radha

Sreeja

et al. 2021

J. Electron. Mater.

View full text Add to dashboard Cite

A five-band polarization-insensitive microwave metamaterial absorber (MMA) is discussed in this paper. The unit cell of the proposed MMA is composed of the top patch and a ground metallic plane, both separated by an FR4 dielectric substrate having an ultrathin thickness of 0.014 λ. The proposed absorber structure offers five different absorption peaks at 5.4 GHz (C band), 8.7 GHz (X band), 14.53 GHz, 15.25 GHz, and 15.68 GHz (Ku band) with the absorptivity of 98%, 86%, 99%, 99.8%, and 99.9%, respectively, for both transverse electric (TE) and transverse magnetic (TM) modes. The analysis of the electric field, magnetic field, polarization, and angle independency has been performed to understand the absorption mechanism easily. The sensing behavior of the structure is analyzed by adding the analyte over the top metal layer. The microwave MMA has been fabricated and measured. The fabrication results agree with the simulation results. The design of the proposed absorber is expected to find application in explosive detection, sensing, defense, and airborne radar applications.

show abstract

Section: Fabrication Resultsmentioning

confidence: 99%

An Ultrathin Microwave Metamaterial Absorber for C, X, and Ku Band Applications

Elakkiya

Radha

Sreeja

et al. 2021

J. Electron. Mater.

View full text Add to dashboard Cite

show abstract

“…Then the material or structure with adjustable capacity gradually attract researchers attention, like tunable materials [27][28][29], diode [30][31][32][33][34], adding mechanical structures directly to metamaterials [35,36], making the metamaterial adjustable. Sameer's team also designed a sandwich structure of the absorber, but the diode is used for the link between the surface units, and all the diodes are controlled by a bus.…”

Section: Introductionmentioning

confidence: 99%

Advancements in tunable and multifunctional metamaterial absorbers: a comprehensive review of microwave to terahertz frequency range

Liu,

Dong,

Sabri

et al. 2024

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

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 (GaN HMET) provides fast switching speeds below 100 nanoseconds, facilitating rapid reconfiguration of absorber functionalities. These advancements in metamaterial absorbers offer promising prospects for intelligent and integrated designs in future applications.

show abstract

“…This shows that the device is not sensitive to other electromagnetic wave segments under the initial receiving condition setting, and that it has strong anti-interference or shielding ability [ 49 ]. The flexible structural characteristics and broadband-absorption capacity, low thermal-expansion coefficient and antioxidant functional characteristics of graphene-based materials confer them great development potential and application prospects in the fields of medical treatment, imaging, and microwave absorption in the future [ 50 , 51 , 52 , 53 , 54 , 55 ].…”

Section: Introductionmentioning

confidence: 99%

Recent Progress in Multifunctional Graphene-Based Nanocomposites for Photocatalysis and Electrocatalysis Application

et al. 2023

View full text Add to dashboard Cite

The global energy shortage and environmental degradation are two major issues of concern in today’s society. The production of renewable energy and the treatment of pollutants are currently the mainstream research directions in the field of photocatalysis. In addition, over the last decade or so, graphene (GR) has been widely used in photocatalysis due to its unique physical and chemical properties, such as its large light-absorption range, high adsorption capacity, large specific surface area, and excellent electronic conductivity. Here, we first introduce the unique properties of graphene, such as its high specific surface area, chemical stability, etc. Then, the basic principles of photocatalytic hydrolysis, pollutant degradation, and the photocatalytic reduction of CO2 are summarized. We then give an overview of the optimization strategies for graphene-based photocatalysis and the latest advances in its application. Finally, we present challenges and perspectives for graphene-based applications in this field in light of recent developments.

show abstract

Design, fabrication and characterization of flexible and ultrathin microwave metamaterial absorber

Cited by 11 publications

References 14 publications

An Ultrathin Microwave Metamaterial Absorber for C, X, and Ku Band Applications

An Ultrathin Microwave Metamaterial Absorber for C, X, and Ku Band Applications

Advancements in tunable and multifunctional metamaterial absorbers: a comprehensive review of microwave to terahertz frequency range

Recent Progress in Multifunctional Graphene-Based Nanocomposites for Photocatalysis and Electrocatalysis Application

Contact Info

Product

Resources

About