Perfect metamaterial absorber with polarization and incident angle independencies based on ring and cross-wire resonators for shielding and a sensor application

In this work, a single-band metamaterial absorber (MA) based on a three dimensional (3D) resonant structure is presented. The unit cell is composed of a standing gear-shaped resonator, which is embedded in the dielectric substrate. The proposed 3D MA is ultrathin with a total thickness of 2.3 mm, corresponding 0.077λ0 at its center frequency. The simulation results demonstrate a high absorption peak at 10.1 GHz with absorptivity of 99.9%. The proposed 3D MA is insensitive to the polarization of the incident wave due to its rotationally symmetric structure. Moreover, the proposed 3D MA exhibits a wide-incident-angle stability, as absorptivity of more than 85% can be achieved for both TE and TM incidences with incident angle up to 60°. Most importantly, multiband electromagnetic wave absorption of the stereo MA can be enabled by adjusting the structural parameters of the standing gear. The proposed structure is compatible with 3D printing technology and has potential applications in electromagnetic shielding.

Download Full-text

Electromagnetic energy harvesting and density sensor application based on perfect metamaterial absorber

International Journal of Modern Physics B ◽

10.1142/s0217979216501332 ◽

2016 ◽

Vol 30 (20) ◽

pp. 1650133 ◽

Cited By ~ 15

Author(s):

Mehmet Bakir ◽

Muharrem Karaaslan ◽

Furkan Dincer ◽

Oguzhan Akgol ◽

Cumali Sabah

Keyword(s):

Energy Harvesting ◽

Resonance Frequency ◽

Microwave Frequency ◽

Metamaterial Absorber ◽

Suggested Model ◽

Sensor Application ◽

Sensing Applications ◽

Frequency Regime ◽

Electromagnetic Energy Harvesting ◽

Perfect Metamaterial Absorber

The proposed study presents an electromagnetic (EM) energy harvesting and density sensor application based on a perfect metamaterial absorber (MA) in microwave frequency regime. In order to verify the absorption behavior of the structure, its absorption behavior is experimentally tested along with the energy harvesting and sensing abilities. The absorption value is experimentally found 0.9 at the resonance frequency of 4.75 GHz. In order to harvest the EM energy, chips resistors are used. In addition, the suggested model is analyzed for its dependency on polarization angles. The results show that the perfect MA can be easily and efficiently used for EM energy harvesting applications. Moreover, as an additional feature of the model, we also realized a density sensor application. It can be seen that this structure can be used as a multi-functional device and configured for many other sensing applications.

Download Full-text

Tunable Graphene-based Plasmonic Perfect Metamaterial Absorber in the THz Region

Micromachines ◽

10.3390/mi10030194 ◽

2019 ◽

Vol 10 (3) ◽

pp. 194 ◽

Cited By ~ 38

Author(s):

Zao Yi ◽

Jiajia Chen ◽

Chunlian Cen ◽

Xifang Chen ◽

Zigang Zhou ◽

...

Keyword(s):

Transverse Electric ◽

Incident Angle ◽

Fdtd Method ◽

Transverse Magnetic ◽

Metamaterial Absorber ◽

Terahertz Region ◽

Surrounding Refractive Index ◽

Perfect Metamaterial Absorber ◽

The Impact ◽

Difference Time

The optical performance of a periodically tunable plasma perfect metamaterial absorber based on a square-square-circle array we propose in the terahertz region is analyzed in this work by the finite difference time domain (FDTD) method. We not only discuss the impact of various parameters such as period a, length L, radius R, and incident angle θ under transverse magnetic (TM)- and transverse electric (TE)-polarization on the absorption spectra of the absorber but also study the effect of the Fermi energy EF and relaxation time τ. Finally, we simulate the spectra as the surrounding refractive index n changes to better evaluate the sensing performance of the structure, producing a sensitivity S of the structure of up to 15006 nm/RIU. On account of this research, we find that the absorber is beneficial to sensors and detectors in the terahertz region.

Download Full-text

Theoretical design of a triple-band perfect metamaterial absorber based on graphene with wide-angle insensitivity

Results in Physics ◽

10.1016/j.rinp.2021.104037 ◽

2021 ◽

Vol 23 ◽

pp. 104037

Author(s):

Miao Pan ◽

Huazhu Huang ◽

Baodian Fan ◽

Wenzhi Chen ◽

Shuai Li ◽

...

Keyword(s):

Metamaterial Absorber ◽

Wide Angle ◽

Theoretical Design ◽

Perfect Metamaterial Absorber ◽

Triple Band

Download Full-text

Dual functionality metamaterial enables ultra-compact, highly sensitive uncooled infrared sensor

Nanophotonics ◽

10.1515/nanoph-2020-0607 ◽

2021 ◽

Vol 10 (4) ◽

pp. 1337-1346

Author(s):

Jin Tao ◽

Zhongzhu Liang ◽

Guang Zeng ◽

Dejia Meng ◽

David R. Smith ◽

...

Keyword(s):

High Sensitivity ◽

Metamaterial Absorber ◽

Bulk Acoustic Wave ◽

Infrared Sensors ◽

Bulk Acoustic Wave Resonator ◽

Wave Resonator ◽

Highly Sensitive ◽

Film Bulk ◽

Perfect Metamaterial Absorber ◽

High Absorption

Abstract Cointegration and coupling a perfect metamaterial absorber (PMA) together with a film bulk acoustic wave resonator (FBAR) in a monolithic fashion is introduced for the purpose of producing ultracompact uncooled infrared sensors of high sensitivity. An optimized ultrathin multilayer stack was implemented to realize the proposed device. It is experimentally demonstrated that the resonance frequency of the FBAR can be used efficiently as a sensor output as it downshifts linearly with the intensity of the incident infrared irradiation. The resulting sensor also achieves a high absorption of 88% for an infrared spectrum centered at a wavelength of 8.2 μm. The structure is compact and can be easily integrated on a CMOS-compatible chip since both the FBAR and PMA utilize and share the same stack of metal and dielectric layers.

Download Full-text