Dual-band UV/VIS photodiodes for sensing applications

2019 ◽  
Author(s):  
Andrzej Kociubiński
Keyword(s):  
Dual Band ◽  
Sensing Applications

scholarly journals Polarization insensitivity characterization of dual-band perfect metamaterial absorber for K band sensing applications

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Mohammad Lutful Hakim ◽  
Touhidul Alam ◽  
Ali F. Almutairi ◽  
Mohd Fais Mansor ◽  
Mohammad Tariqul Islam
Keyword(s):  
Metamaterial Absorber ◽  
Ring Resonators ◽  
Dual Band ◽  
Sensing Applications ◽  
Tm Mode ◽  
Polarization Insensitive ◽  
Transverse Electromagnetic ◽  
Polarization Insensitivity ◽  
K Band

AbstractPolarization insensitive metamaterial absorbers (MA) are currently very attractive due to their unique absorption properties at different polarization angles. As a result, this type of absorber is widely used in sensing, imaging, energy harvesting, etc. This paper presents the design and characterization of a dual-band polarization-insensitive metamaterial absorber (MA) for K-band applications. The metamaterial absorber consists of two modified split ring resonators with an inner cross conductor to achieve a 90% absorption bandwidth of 400 MHz (21.4–21.8 GHz) and 760 MHz (23.84–24.24 GHz) at transverse electromagnetic (TEM), transverse electric (TE), and transverse magnetic (TM) mode. Polarization insensitivity of different incident angles for TE and TM mode is also investigated, which reveals a similar absorption behavior up to 90°. The metamaterial structure generates single negative (SNG) property at a lower frequency of 21.6 GHz and double negative property (DNG) at an upper frequency of 24.04 GHz. The permittivity and pressure sensor application are investigated for the proposed absorber, which shows its useability in these applications. Finally, a comparison with recent works is also performed to demonstrate the feasibility of the proposed structure for K band application, like sensor, filter, invasive clock, etc.

Dual-band THz antenna with SNG loads for biosensing and early skin cancer detection with Fano response: A numerical study

2021 ◽  
pp. 146442072110306
Author(s):  
Shima Poorgholam-Khanjari ◽  
Ferdows B Zarrabi
Keyword(s):  
Cancer Detection ◽  
Numerical Study ◽  
Quartz Substrate ◽  
Ground Plane ◽  
The Body ◽  
Dual Band ◽  
Total Size ◽  
Sensing Applications ◽  
Dual Band Antenna ◽  
Thz Antenna

THz spectrum is one of the safest areas of light for the body which can be considered in biomedical sensing applications in the human body and can be utilized for high sensitivity detection. In this paper, a THz antenna with a single negative (SNG) load is developed for early cancer detection application. The SNG load is useful to increase the gain and efficiency of the antenna. The primary antenna has a circular slot on the ground plane. Metamaterial element is placed on the cylindrical dielectric. The total size of the antenna is 400 × 400 μm 2 and the loss-less quartz substrate is used to design the proposed antenna. In addition, the SNG load provides dual-band characteristics, and the proposed antenna covers 0.85 and 1 THz with high directivity and efficiency which is more than 90%. The achieved results proved that the antenna has higher sensitivity at a lower frequency. Moreover, we showed the proposed dual-band antenna can be used to increase the sensing accuracy of the device to detect the progress of cancer in a specific sample.

Tunable dual-band plasmonic perfect absorber and its sensing applications

2019 ◽  
Vol 36 (10) ◽  
pp. 2750 ◽  
Author(s):  
Leilei Shi ◽  
Qian Tang ◽  
Zhengqi Liu ◽  
Ye Liu ◽  
Yuyin Li ◽  
...  
Keyword(s):  
Dual Band ◽  
Perfect Absorber ◽  
Sensing Applications

scholarly journals Dual-band dielectric metamaterial absorber and sensing applications

2020 ◽  
Vol 18 ◽  
pp. 103272 ◽  
Author(s):  
Sujuan Feng ◽  
Yan Zhao ◽  
Yan-Lin Liao
Keyword(s):  
Metamaterial Absorber ◽  
Dual Band ◽  
Sensing Applications

Dual-Band Polarization Insensitive Metamaterial-Based Absorber Suitable for Sensing Applications

2021 ◽  
Author(s):  
Ataollah Kalantari Osgouei ◽  
Bahram Khalichi ◽  
Ebru Buhara ◽  
Amir Ghobadi ◽  
Ekmel Ozbay
Keyword(s):  
Dual Band ◽  
Sensing Applications ◽  
Polarization Insensitive

scholarly journals A Polarization Independent Quasi-TEM Metamaterial Absorber for X and Ku Band Sensing Applications

Sensors ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 4209 ◽  
Author(s):  
Ahasanul Hoque ◽  
Mohammad Tariqul Islam ◽  
Ali Almutairi ◽  
Touhidul Alam ◽  
Mandeep Jit Singh ◽  
...  
Keyword(s):  
Satellite Communication ◽  
Wave Spectrum ◽  
Metamaterial Absorber ◽  
Simulation Software ◽  
Ring Resonators ◽  
Dual Band ◽  
Absorption Bands ◽  
Sensing Applications ◽  
Resonance Frequencies ◽  
Ku Band

In this paper, a dual-band metamaterial absorber (MMA) ring with a mirror reflexed C-shape is introduced for X and Ku band sensing applications. The proposed metamaterial consists of two square ring resonators and a mirror reflexed C-shape, which reveals two distinctive absorption bands in the electromagnetic wave spectrum. The mechanism of the two-band absorber particularly demonstrates two resonance frequencies and absorption was analyzed using a quasi-TEM field distribution. The absorption can be tunable by changing the size of the metallic ring in the frequency spectrum. Design and analysis of the proposed meta-absorber was performed using the finite-integration technique (FIT)-based CST microwave studio simulation software. Two specific absorption peaks value of 99.6% and 99.14% are achieved at 13.78 GHz and 15.3 GHz, respectively. The absorption results have been measured and compared with computational results. The proposed dual-band absorber has potential applications in sensing techniques for satellite communication and radar systems.

Design of a metasurface-based dual-band Terahertz perfect absorber with very high Q-factors for sensing applications

2018 ◽  
Vol 416 ◽  
pp. 152-159 ◽  
Author(s):  
M. Janneh ◽  
A. De Marcellis ◽  
E. Palange ◽  
A.T. Tenggara ◽  
D. Byun
Keyword(s):  
Dual Band ◽  
Perfect Absorber ◽  
High Q ◽  
Sensing Applications ◽  
Q Factors ◽  
Very High

Dual-Band Linear Antenna Array for Harmonic Sensing Applications

2016 ◽  
Vol 15 ◽  
pp. 1577-1580 ◽  
Author(s):  
Lydia Chioukh ◽  
Halim Boutayeb ◽  
Dominic Deslandes ◽  
Ke Wu
Keyword(s):  
Antenna Array ◽  
Dual Band ◽  
Linear Antenna ◽  
Linear Antenna Array ◽  
Sensing Applications
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