Numerical Simulation of Tunable Terahertz Graphene-Based Sensor for Breast Tumor Detection

Hlali, Aymen; Oueslati, Afef Elloumi; Zairi, Hassen

doi:10.1109/jsen.2021.3060326

Cited by 24 publications

(6 citation statements)

References 36 publications

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“…These results verify that our plasmonic biosensor has a high sensitivity for the three types of cancerous cells compared to the previous results in the literature [28,39]. Table 3 cells in the second configuration of the biosensor when the graphene is in the core-cladding boundary of metal-dielectric waveguides.…”

Section: Cancer Samples In the Second Configurationsupporting

confidence: 89%

All-Optical Tunable Plasmonic Biosensor Made of Graphene and Metamaterial

2022

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Section: Cancer Samples In the Second Configurationsupporting

confidence: 89%

All-Optical Tunable Plasmonic Biosensor Made of Graphene and Metamaterial

2022

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“…The amount of S for ∆n of each cancer cell is calculated as follows: S=357THz/RIU for ∆n=0.014 of breast cancer cell, S=1034THz/RIU for ∆n=0.02 of basal cancer cell and S=195THz/RIU for ∆n=0.024 of cervical cancer cell. These results verify that our plasmonic biosensor has a high sensitivity for the three types of cancerous cells compared to the previous results in the literature [28,39]. Table 3 cells in the second configuration of the biosensor when the graphene is in the core-cladding boundary of metal-dielectric waveguides.…”

Section: Cancer Samples In the Second Configurationsupporting

confidence: 89%

All-Optical Tunable Plasmonic Biosensor Made of Graphene and Metamaterial

Lotfi

Sang-Nourpour

Kheradmand

2021

Preprint

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We demonstrate a novel, label-free and real-time tunable infrared biosensor by employing surface-plasmon polaritons in asymmetric Mach-Zehnder interferometer. The waveguides cladding in the Mach-Zehnder interferometer is made of lossy media with positive and negative electromagnetic susceptibilities, including metamaterial, metal and graphene. The core consists of dielectric media. We introduce two configurations for our biosensor structure. First configuration is an open-path structure and the second one consists of a sample housing made of a silicon layer around the structure. We also present a tunable biosensor by applying a gate voltage to the graphene in the structure. We employ three different cancerous cells, including cervical, breast and basal, as samples to examine the capabilities of the biosensor. Our biosensor structure is highly sensitive, compared to the existing biosensors in the literature, with the sensitivity for basal cancer cell of 1034THz/RIU. The proposed biosensor structure is compact and easy to fabricate with applications in biomedical sensing and environmental control to detect water pollutants.

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“…One of the most interesting features of graphene is that its conductivity depends largely on the chemical potential, which can be controlled by the carrier density [ 62 ]. Additionally, in addition to the geometric parameters, the carrier density is another critical parameter that affects the performance of the proposed metasurface.…”

Section: Resultsmentioning

confidence: 99%

Cancer Diagnosis Using Terahertz-Graphene-Metasurface-Based Biosensor with Dual-Resonance Response

Tan

Wang

et al. 2022

Nanomaterials

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Owing to the outstanding physical properties of graphene, its biosensing applications implemented by the terahertz metasurface are widely concerned and studied. Here, we present a novel design of the graphene metasurface, which consists of an individual graphene ring and an H-shaped graphene structure. The graphene metasurface exhibits a dual-resonance response, whose resonance frequency strongly varies with the geometrical parameters of the proposed metasurface, the carrier density of graphene, and the analyte composition. The transparency window, including width and position, can be artificially controlled by adjusting the geometrical parameters or the Fermi energy. Furthermore, the sensing parameters of the graphene metasurface for cancerous and normal cells are investigated, focusing on two factors, namely cell quantity and position on the metasurface. The simulated results clearly show that the theoretical sensitivity, figure of merit, and quantity of the graphene metasurface for breast cells reach 1.21 THz/RIU, 2.75 RIU−1, and 2.43, respectively. Our findings may open up new avenues for promising applications in the diagnosis of cancers.

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Numerical Simulation of Tunable Terahertz Graphene-Based Sensor for Breast Tumor Detection

Cited by 24 publications

References 36 publications

All-Optical Tunable Plasmonic Biosensor Made of Graphene and Metamaterial

All-Optical Tunable Plasmonic Biosensor Made of Graphene and Metamaterial

All-Optical Tunable Plasmonic Biosensor Made of Graphene and Metamaterial

Cancer Diagnosis Using Terahertz-Graphene-Metasurface-Based Biosensor with Dual-Resonance Response

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