Diamond and Related Materials, Journal Year: 2024, Volume and Issue: 147, P. 111321 - 111321
Published: June 21, 2024
Language: Английский
Physical Chemistry Chemical Physics, Journal Year: 2024, Volume and Issue: 26(6), P. 5579 - 5588
Published: Jan. 1, 2024
Circular dichroism (CD) in terahertz (THz) regions has been widely used biomonitoring, analytical chemistry, communication sensing, and other fields. Herein, we present a simple design for dual-band THz chiral metasurface absorber (CMA) with stronger CD effect based on temperature-tunable InSb enhanced sensing applications. The proposed CMA consisted of periodic array the evolved C-shaped adhered to copper substrate. designed at 305 K achieved right-handed circular polarization (RCP)-selective absorbance 98.86% 97.43% 1.65 1.89 THz, respectively, left-handed (LCP) 9.98% 22.46%, exhibited values 0.89 0.75. In addition, properties can be adjusted by changing geometrical parameters unit-cell structure. simulated electric field power follow distributions indicate that this chiral-selective absorption is due different plasma resonance mode excitations incident (CP) wave. Furthermore, spectra dynamically varying outside temperature refraction index (RI) filled analytes. function as high-performance sensor sensitivities 4.68 GHz
Language: Английский
Citations
60
Surfaces and Interfaces, Journal Year: 2024, Volume and Issue: 49, P. 104403 - 104403
Published: May 3, 2024
Language: Английский
Citations
45
Plasmonics, Journal Year: 2024, Volume and Issue: unknown
Published: June 21, 2024
Language: Английский
Citations
6
Nanomaterials, Journal Year: 2024, Volume and Issue: 14(14), P. 1200 - 1200
Published: July 15, 2024
This study proposes a multifunctional absorber in the terahertz (THz) regime based on vanadium dioxide (VO2) and graphene with either–or band selector applications, which can be realized by electrically thermally controlling Fermi energy level of dioxide, respectively. The broadband absorption achieved absorptance exceeding 90%, when VO2 film is metallic phase levels upper lower layers are simultaneously set to 0.6 0 eV, double narrowband insulating as 0.8 By flexibly shifting between narrowband, proposed used an selector, corresponding optional bandwidth from 2.05 2.35 THz, 3.25 3.6 THz. Furthermore, single setting conductivity appropriate values. THz applications such devices, switches, cloaking objects, selectors.
Language: Английский
Citations
4
Physics Letters A, Journal Year: 2025, Volume and Issue: unknown, P. 130550 - 130550
Published: April 1, 2025
Language: Английский
Citations
0
Frontiers in Materials, Journal Year: 2024, Volume and Issue: 11
Published: July 31, 2024
Introduction: The emergence of electromagnetic wave pollution as a new form in human society is attributed to the advancements communication technology and electronic information business. In addition harming priceless equipment, these radiation interference issues brought on by electrical devices have major negative influence productivity wellbeing. secret getting rid (EMI) improving performance shielding technology. Metamaterial absorber type metamaterial that absorb EMI radiation. benefits absorbers include their lightweight, simple construction, excellent absorptivity. Methods: This paper proposes novel for absorption. It consists dielectric layers, layer transmission line. reflection reduced miniaturization metamaterials. Results Discussion: Simulation results show proposed design has better compared existing methods. operating frequency range from 23.1 28.3 GHz. values S 21 with without are −5 dB −0.05 dB, effectiveness 10.10 maximum 12.63 dB.
Language: Английский
Citations
1
Optics Communications, Journal Year: 2024, Volume and Issue: 574, P. 131063 - 131063
Published: Sept. 6, 2024
Language: Английский
Citations
1
Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)
Published: Dec. 3, 2024
We designed an ultra-broadband graphene absorber structure with the applied resonator design based on Al-AlSb-Cr structure, and a thin effective layer of is inserted. To develop role in solar absorbers, current investigates above 98% for 1500 nm bandwidth 2800 (overall bandwidth) 93.68%. In this study, procedure investigated flow chat configuration, multi-step presentation developed layers, analysis used parameters will be involved. The optimized using machine learning algorithm. shows good performance compared to other system. newly can absorbed not only visible places but also near-infrared energy ultraviolet zones. applications light trapping process, photovoltaic devices, harvesting used.
Language: Английский
Citations
1
International Journal of Modern Physics B, Journal Year: 2023, Volume and Issue: 38(31)
Published: Dec. 12, 2023
The VO 2 thin film has the advantage of thermally controlled insulator-metal phase transition. Based on this, we presented a reconfigurable metamaterial with switchable wideband absorption and sensing at THz band in this paper. At low temperature ([Formula: see text][Formula: text]S/m), can realize nearly perfect range 6.88–9[Formula: text]THz. When rises to certain extent an peak which be used appears 4.08[Formula: text]THz permittivity sensitivity 0.5[Formula: text]THz/PU. advantages simple structure absorption/sensing functions potential application value terahertz stealth, detection, sensing, so on.
Language: Английский
Citations
2
IEEE Photonics Technology Letters, Journal Year: 2024, Volume and Issue: 36(16), P. 993 - 996
Published: Aug. 15, 2024
Language: Английский
Citations
0