High Q-Factor, High Contrast, and Multi-Band Optical Sensor Based on Plasmonic Square Bracket Dimer Metasurface DOI Creative Commons
Bin Ni,

Guanghu Chu,

Zheyang Xu

et al.

Nanomaterials, Journal Year: 2024, Volume and Issue: 14(5), P. 421 - 421

Published: Feb. 25, 2024

A high-performance resonant metasurface is rather promising for diverse application areas such as optical sensing and filtering. Herein, a metal-insulator-metal (MIM) sensor with merits of high quality-factor (Q-factor), multiple operating bands, spectrum contrast proposed using plasmonic square bracket dimer metasurface. Due to the complex itself, structure two oppositely placed brackets, array configuration, kinds mode coupling can be devised in inner outer elements within metasurface, enabling four channels sensitivities higher than 200 nm/RIU refractive index sensing. Among them, special channel based on reflection-type surface lattice resonance (SLR) mechanism has full width at half maximum (FWHM) only 2 nm, peak-to-dip signal 0.82, Q-factor 548, it also behave good thickness measurement deposition layer. The multi-band work normally large or range, number further increased by simply breaking structural symmetry changing polarization angle incident light. Equipped unique advantages, suggested great potential sensing, monitoring, filtering, other applications.

Language: Английский

Design of a Penta-Band Graphene-Based Terahertz Metamaterial Absorber with Fine Sensing Performance DOI Creative Commons

Runing Lai,

Hao Chen,

Zigang Zhou

et al.

Micromachines, Journal Year: 2023, Volume and Issue: 14(9), P. 1802 - 1802

Published: Sept. 21, 2023

This paper presents a new theoretical proposal for surface plasmon resonance (SPR) terahertz metamaterial absorber with five narrow absorption peaks. The overall structure comprises sandwich stack consisting of gold bottom layer, silica medium, and single-layer patterned graphene array on top. COMSOL simulation represents that the peaks under TE polarization are at fI = 1.99 THz (95.82%), fⅡ 6.00 (98.47%), fⅢ 7.37 (98.72%), fⅣ 8.47 (99.87%), fV 9.38 (97.20%), respectively, which is almost consistent performance TM polarization. In contrast to noble metal absorbers, its rates frequencies can be dynamically regulated by controlling Fermi level relaxation time graphene. addition, device maintain high absorptivity 0~50° in 0~40° maximum refractive index sensitivity reach SV 1.75 THz/RIU, figure merit (FOM) FOMV 12.774 RIU-1. conclusion, our design has properties dynamic tunability, independence, wide-incident-angle absorption, fine sensitivity. We believe potential applications photodetectors, active optoelectronic devices, sensors, other related fields.

Language: Английский

Citations

55
Enhanced sensitivity and optimization with machine learning for gold-graphene encoded metasurface sensor applied for haemoglobin detection DOI
Jacob Wekalao,

Ngaira Mandela,

Shobhit K. Patel

et al.

Measurement, Journal Year: 2025, Volume and Issue: unknown, P. 116883 - 116883

Published: Jan. 1, 2025

Language: Английский

Citations

19
High-Sensitivity Terahertz Refractive Index Sensor Using Black Phosphorus-MXene-Graphene Hybrid Metasurfaces for Label-Free COVID-19 Detection DOI
Jacob Wekalao,

Refka Ghodhbani,

R. Dhivya

et al.

Plasmonics, Journal Year: 2025, Volume and Issue: unknown

Published: March 13, 2025

Language: Английский

Citations

7
Optical Fibre-Based Sensors—An Assessment of Current Innovations DOI Creative Commons
Svetlana N. Khonina, Nikolay L. Kazanskiy, Muhammad A. Butt

et al.

Biosensors, Journal Year: 2023, Volume and Issue: 13(9), P. 835 - 835

Published: Aug. 22, 2023

Optical fibre sensors are an essential subset of optical technology, designed specifically for sensing and measuring several physical parameters. These offer unique advantages over traditional sensors, making them gradually more valuable in a wide range applications. They can detect extremely small variations the parameters they to measure, such as analytes case biosensing. This high sensitivity allows subtle temperature, pressure, strain, refractive index analytes, vibration, other environmental factors with exceptional accuracy. Moreover, these enable remote capabilities. Since light signals used carry information, elements be placed at distant or inaccessible sites still communicate data back central monitoring system without signal degradation. In recent times, different attractive configurations approaches have been proposed enhance fibre-based sensor briefly explained this review. However, we believe that choice configuration should designated based on specific application. As continue evolve improve, will play increasingly vital role critical control applications across various industries.

Language: Английский

Citations

28
A Concise Review of the Progress in Photonic Sensing Devices DOI Creative Commons
Muhammad Shahbaz, Muhammad A. Butt, Ryszard Piramidowicz

et al.

Photonics, Journal Year: 2023, Volume and Issue: 10(6), P. 698 - 698

Published: June 20, 2023

Photonic sensing devices have become increasingly important in various fields such as agriculture, medicine, biochemical sensing, and manufacturing. They are highly sensitive can classify minor changes the physical chemical properties of ambient medium with high precision. This makes them practical applications where accurate measurements critical, medical diagnostics environmental monitoring. In this review paper, recent advances different types photonic sensors discussed, which include crystal-based sensors, surface plasmon resonance-based optical fiber-based waveguide-based wearable sensors. These fascinating play a crucial role countless several advantages over traditional As technology continues to advance, we expect even more precise, versatile, reliable.

Language: Английский

Citations

25
Design and analysis of a multi-modal refractive index plasmonic biosensor based on split ring resonator for detection of the various cancer cells DOI

Ali Khodaie,

Hamid Heidarzadeh

Optical and Quantum Electronics, Journal Year: 2024, Volume and Issue: 56(9)

Published: Aug. 24, 2024

Language: Английский

Citations

13
Physiochemical Coupled Dynamic Nanosphere Lithography Enabling Multiple Metastructures from Single Mask DOI
Lin Chang, Xiaohong Liu, Jie Luo

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(13)

Published: Jan. 9, 2024

Metastructures are widely used in photonic devices, energy conversion, and biomedical applications. However, to fabricate multiple patterns continuously single etching protocol with highly tunable properties is challenging. Here, a simple robust dynamic nanosphere lithography proposed by inserting spacer between the assembly wafer. The diameter decrease uneven penetration of during lead masking process. Coupled anisotropic physical ion sputtering ricocheting isotropic chemical radical achieve structures various 3D forming through Specifically, diameters define periodicity, etched forms upper parts, wafer lower parts. Each part structure changing diameter, thickness, etch conditions. Using this protocol, numerous varying sizes including nanomushrooms, nanocones, nanopencils, nanoneedles diverse shapes realized as proof concepts. broadband antireflection ability nanostructures their use surface-enhanced Raman spectroscopy also demonstrated for practical application. This method substantially simplifies fabrication procedure metastructures, paving way its application disciplines especially devices.

Language: Английский

Citations

12
Metasurfaces: Shaping the future of photonics DOI
Nikolay L. Kazanskiy, Svetlana N. Khonina, Muhammad A. Butt

et al.

Science Bulletin, Journal Year: 2024, Volume and Issue: 69(11), P. 1607 - 1611

Published: April 26, 2024

Language: Английский

Citations

12
Integrated Photonic Sensors for the Detection of Toxic Gasses—A Review DOI Creative Commons
Muhammad A. Butt, Ryszard Piramidowicz

Chemosensors, Journal Year: 2024, Volume and Issue: 12(7), P. 143 - 143

Published: July 18, 2024

Gas sensing is crucial for detecting hazardous gasses in industrial environments, ensuring safety and preventing accidents. Additionally, it plays a vital role environmental monitoring control, helping to mitigate pollution protect public health. Integrated photonic gas sensors are important due their high sensitivity, rapid response time, compact size, enabling precise recognition of concentrations real-time. These leverage technologies, such as waveguides resonators, enhance performance over traditional sensors. Advancements materials fabrication techniques could further improve efficiency, making them invaluable monitoring, safety, healthcare diagnostics. In this review, we delved into that operate based on the principles evanescent field absorption (EFA) wavelength interrogation methods. advanced mechanisms allow highly sensitive selective detection, leveraging interplay light with molecules produce measurements.

Language: Английский

Citations

12
Ultrahigh-Q Polarization-Independent Terahertz Metamaterial Absorber Using Pattern-Free Graphene for Sensing Applications DOI Creative Commons
Y. F. Chen, Guotao Sun, Wei Jiang

et al.

Nanomaterials, Journal Year: 2024, Volume and Issue: 14(7), P. 605 - 605

Published: March 29, 2024

In contrast to noble metals, graphene exhibits significantly lower loss, especially useful for optical sensing applications that require ultrahigh Q factors, and offer wide range tunability via an adjustable Fermi level. However, precise patterning is difficult, large areas, severely limiting its applications. Here, a tunable terahertz metamaterial absorber (TMMA) with factors consisting of continuous, pattern-free demonstrated. A sheet overlaid on Al metal array, forming structure supports strong localized surface plasmon polaritons (LSPPs) fields tightly confined in the graphene, minimizing loss. Theoretical results show this TMMA factor 1730, frequency sensitivity 2.84 THz/RIU, excellent figure merit (FoM) 365.85 RIU−1, independent polarization. from ~2.25 ~3.25 THz also achieved by tuning Ef 0.3 0.7 eV. The proposed graphene-based holds many potential applications, particularly field sensing.

Language: Английский

Citations

10