Dual-band Flexible Plasmonic Metasensors for Ultrasensitive Terahertz Biomedical Sensing

Sensors and Actuators B Chemical, Год журнала: 2025, Номер unknown, С. 137480 - 137480

Опубликована: Фев. 1, 2025

Язык: Английский

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A broadband absorber based on W-TiO2 ellipsoidal core-shell array structure

Physica B Condensed Matter, Год журнала: 2025, Номер unknown, С. 417077 - 417077

Опубликована: Фев. 1, 2025

Язык: Английский

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A numerical approach for optimizing ultrawideband absorber performance with MXene multilayer metamaterials for solar engineering applications

Applied Physics A, Год журнала: 2025, Номер 131(4)

Опубликована: Март 3, 2025

Язык: Английский

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Design of an Ultra‐Wideband and Wide‐Angle Absorber Based on ITO‐FSA for EM Stealth

Microwave and Optical Technology Letters, Год журнала: 2025, Номер 67(3)

Опубликована: Март 1, 2025

ABSTRACT In this letter, an electromagnetic stealth composite superlattice‐type structure based on indium tin oxides (ITO) resistive film and frequency selective absorber (FSA) is proposed for radar cross section (RCS) reduction. It exhibits impressive ultra‐wideband performance with absorption of more than 85% (RCS reduction 8.2 dB) spanning from 0.94 to 23.2 GHz (relative bandwidth 184.8%). The also polarization‐insensitive has angular incidence stability up 45° 60° TE TM polarizations, respectively. Additionally, it demonstrates excellent miniaturization characteristics, a cell size only 0.15 λ L × 0.09 , which provides technical solution research application in related fields.

Язык: Английский

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Graphene-based compact polarization-insensitive broadband terahertz absorber for sensing applications

Frequenz, Год журнала: 2025, Номер unknown

Опубликована: Март 17, 2025

Abstract This paper presents a compact broadband absorber designed for sensing applications at terahertz frequencies. The proposed design includes dielectric material, metallic ground plane made of copper, and graphene-based elliptical slot-loading rectangular resonator. unit cell the measures dimensions 6 μm × μm. demonstrates remarkable absorption characteristics, with over 90 % across wide frequency spectrum 0–18 THz. At 12.2 THz, performance is nearly perfect, an rate 99.9 %. Further, has symmetric design, facilitating it to be insensitive polarization. It possesses stable characteristics both Transverse-Electric (TE) Transverse-Magnetic (TM) waves incidence angle ( θ ) ≥ 40°. Additionally, suggested analysed regard effects various analyte materials as well modifications in graphene characteristics. outperforms previously reported THz absorbers terms relative bandwidth, peak, oblique stability, overall volume.

Язык: Английский

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Polarization insensitive multiband terahertz absorber for sensing applications

Materials Science and Engineering B, Год журнала: 2025, Номер 317, С. 118215 - 118215

Опубликована: Март 20, 2025

Язык: Английский

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Reconfigurable MEMS‐based Perfect Meta‐absorber with Ultrahigh‐Q and Angle‐dependent Characteristics for Sensing Applications

Laser & Photonics Review, Год журнала: 2025, Номер unknown

Опубликована: Март 26, 2025

Abstract We present two designs of perfect meta‐absorbers (PMAs) utilizing metallic plasmonic grating, and they have resonances with ultranarrow bandwidth in the order nanometers great surface electric field enhancement through coupling resonance plasmon polaritons (SPPs) grating waves. Notably, grating‐coupled demonstrates pronounced incident angle dependence ambient refractive index sensitiveness. Meanwhile, its dependencies are almost linearly controlled. PMA metal‐metal (MMG) structure has period‐dependent angular sensitivity shows a 4.0039 µm/RIU that maximum figure merit (FOM) value is 2300 RIU −1 under normal light. The sensitivities 3.6514 4.3486 FOM values 2783 3941 for different oblique incidence 5°. Another design metal‐insulator‐metal (MIMG) both SPP localized (LSP) modes, it can achieve single‐frequency scanning spectral region from wavelengths 3 µm to 5 by changing or index. Finally, reconfigurable achieves active regulation irradiation simultaneously realize functions tuning, sensing so on.

Язык: Английский

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A dual functional SSPP based microwave sensor for detecting volumetric concentration of alcohol mixtures and paper thickness

AEU - International Journal of Electronics and Communications, Год журнала: 2025, Номер unknown, С. 155796 - 155796

Опубликована: Апрель 1, 2025

Язык: Английский

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Design and experimental validation of a compact dual band double negative metamaterial for energy harvesting applications

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Апрель 25, 2025

Язык: Английский

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Square octagon split ring resonator-based metamaterial absorber under S, C, X, and Ku band for absorbing and sensing application

Frequenz, Год журнала: 2025, Номер unknown

Опубликована: Июнь 1, 2025

Abstract A square octagon split ring resonator (SOSRR) based six-band polarization-insensitive metamaterial absorber (MMA) with a high effective medium ratio (EMR), and excellent absorption is proposed in this study. It can be utilized as an S, C, X, Ku band frequency sensor at 3.34 GHz (S-band). unique patch has been introduced the unit cell to achieve polarization insensitive properties of 76 %, 82 92 99 98 % respectively under spectrum. The distinctive features SOSRR are its simple, structure EMR value 11.12, up 90° 3.34, 5.08, 7.95, 11.68, 14.26, 15.89 respectively. designed MMA fabricated on loss FR-4 dielectric substrate electrical dimension 0.089 λ 0 × . Measurement for array performance verified by experiment agreement. suggested very attractive refractive index sensing applications due several features, including low profile, angular stability, insensitivity, sensitivity (S), quality factor (QF), value.

Язык: Английский

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