Highly sensitive fiber optic surface plasmon resonance sensor employing 2D nanomaterials

Alagdar, Mohamed; Yousif, Bedir; Areed, Nehal F.; Elzalabani, Mahmoud

doi:10.1007/s00339-020-03712-1

Cited by 27 publications

(7 citation statements)

References 63 publications

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“…Recently, Alagdar et al proposed novel fibre optic SPR sensors which incorporates layers of Ag, Pt, ITO, and graphene via computational modelling methods [235]. In the proposed model, the plastic cladding in optic fibres was removed from a section of the fibre, and replaced with the aforementioned layers, from Ag to graphene with the Ag layer facing the optic fibre core and the graphene layer as the sensing interface.…”

Section: Fibre-optic Based Nanomaterials Plasmon Sensorsmentioning

confidence: 99%

Plasmonic gas sensors based on nanomaterials: mechanisms and recent developments

Vaidyanathan,

Mondal,

Rout

et al. 2024

J. Phys. D: Appl. Phys.

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Sensing devices for rapid analytics are important societal requirements, with wide applications in environmental diagnostics, food testing, and disease screening. Nanomaterials present excellent opportunities in sensing applications owing to their superior structural strength, and their electronic, magnetic, and optoelectronic properties. Among the various mechanisms of gas sensing, including chemiresistive sensors, electrochemical sensors, and acoustic sensors, another promising area in this field involves plasmonic sensors. The advantage of nanomaterial-plasmonic sensors lies in the vast opportunities for tuning the sensor performance by optimizing the nanomaterial structure, thereby producing highly selective and sensitive sensors. Recently, several novel plasmonic sensors have been reported, with various configurations such as nanoarray resonator-, ring resonator-, and fiber-based plasmonic sensors. Going beyond noble metals, some promising nanomaterials for developing plasmonic gas sensor devices include two-dimensional materials, viz. graphene, transition metal dichalcogenides, black phosphorus, blue phosphorus, and MXenes. Their properties can be tuned by creating hybrid structures with layers of nanomaterials and metals, and the introduction of dopants or defects. Such strategies can be employed to improve the device performance in terms of its dynamic range, selectivity, and stability of the response signal. In this review, we have presented the fundamental properties of plasmons that facilitate its application in sensor devices, the mechanism of sensing, and have reviewed recent literature on nanomaterial-based plasmonic gas sensors. This review briefly describes the status quo of the field and future prospects.

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Section: Fibre-optic Based Nanomaterials Plasmon Sensorsmentioning

confidence: 99%

Plasmonic gas sensors based on nanomaterials: mechanisms and recent developments

Vaidyanathan,

Mondal,

Rout

et al. 2024

J. Phys. D: Appl. Phys.

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“…The dielectric constant of ITO is written as follows: 27 – 29 εm(λ)=3.8−λ2λcλp2(λc+iλ),where λp=0.56497 and λc=11.21076 μm.…”

Section: Theorymentioning

confidence: 99%

“…The dielectric constant of ITO is written as follows: [27][28][29] E Q -T A R G E T ; t e m p : i n t r a l i n k -; e 0 0 3 ; 1 1 6 ; 3 9 5…”

Section: Dispersion Relationmentioning

confidence: 99%

Highly sensitive self-referenced surface plasmon resonance fiber optic sensor with indium tin oxide/metal/dielectric structure

Zhang

Lin

2023

Opt. Eng.

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A highly sensitive self-referenced surface plasmon resonance (SPR) fiber optic sensor with an indium tin oxide (ITO)/metal/dielectric structure is proposed and theoretically analyzed using the transfer matrix method-based numerical simulations. First, the thicknesses of the metal and ITO films are optimized to realize self-referenced sensing with low normalized transmission power at the resonance peak. Then, a thickness-optimized dielectric (TiO 2 ) film is employed on top of the metal film to improve the sensitivity of the proposed self-referenced sensor. In addition, a comparison between the traditional self-referenced sensor and the proposed self-referenced sensor with the dielectric film are carried out. The self-referenced sensor with a 36 nm ITO/37 nm Ag/70 nm TiO 2 structure obtains up to 14510 nm/RIU in sensing sensitivity when the refractive index of the analyte varies from 1.33 to 1.37, which is improved by 421% compared with the traditional one without the dielectric. At the same time, the shift of the self-referenced resonance wavelength changes little for the proposed structure. The proposed ITO/metal/dielectric structurebased fiber optic sensor exhibits highly sensitively self-referenced sensing performance in the near infrared band, which can promote its application in the field of biosensors.

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“…[ 15 ] Alagdar et al proposed a structure of Ag/Pt/ITO/graphene to increase the sensitivity up to 4150 nm RIU −1 . [ 16 ] These advances indicate that the bimetallic combination based on copper may be underestimated in improving sensing performance, especially sensitivity.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Black Phosphorus‐Assisted Copper‐Based Bimetallic‐Enhanced Surface Plasmon Resonance Biosensor

Guo

Chen

et al. 2023

Physica Status Solidi (a)

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Atomically thin black phosphorus (BP) is an emerging 2D material with excellent optical and electrical properties. Copper (Cu) and platinum (Pt) are plasmonic metals due to their outstanding electrical properties. Here, Cu–Pt as the plasmonic bimetal is used, BP as the sensing substrate combined with a composite layer of titanium dioxide–silicon dioxide (TiO2–SiO2) to achieve significant enhancement in sensitivity. All of the calculations are based on the transfer matrix method and Fresnel equations. Through systematic optimization of all parameters, the configuration of TiO2(15 nm)/SiO2 (5 nm)/Cu (26 nm)/Pt (9 nm)/BP (4 layers) is achieved, where the sensitivity of 533° RIU−1 reaches 390% of pure copper‐based biosensor. There is a linear range of sensitivity with the change of refractive index for this optimal configuration. The detection limit of the refractive index change can be as low as 2 × 10−7 RIU, two orders of magnitude lower compared with that of pure copper‐based sensors, indicating great potential to detect trace biomolecules.

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Highly sensitive fiber optic surface plasmon resonance sensor employing 2D nanomaterials

Cited by 27 publications

References 63 publications

Plasmonic gas sensors based on nanomaterials: mechanisms and recent developments

Plasmonic gas sensors based on nanomaterials: mechanisms and recent developments

Highly sensitive self-referenced surface plasmon resonance fiber optic sensor with indium tin oxide/metal/dielectric structure

Numerical Analysis of Black Phosphorus‐Assisted Copper‐Based Bimetallic‐Enhanced Surface Plasmon Resonance Biosensor

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