Surface Plasmon Resonance-Based Fiber-Optic Metallic Multilayer Biosensors

Radha, S.; Kumar, S. R. Sarath; Iyer, Sankararaman Sankaranarayana

doi:10.1021/acsomega.1c01236

Cited by 13 publications

(7 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3). In addition, the detection accuracy 38 and figure of merit (FOM), 14 of this self-referenced sensor are also calculated, which are 0.1659 nm−1 and 147.6453 RIU−1, respectively, which show good sensing performance.…”

Section: Resultsmentioning

confidence: 99%

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

Zhang

Lin

2023

Opt. Eng.

View full text Add to dashboard Cite

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.

show abstract

Section: Resultsmentioning

confidence: 99%

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

Zhang

Lin

2023

Opt. Eng.

View full text Add to dashboard Cite

show abstract

“…However, the phone case and SPRB connector need more sophisticated Android application and hardware. Thus, to configure the relative merits of one configuration over the other, Radha et al 60 proposed a multi-layer metallic surface (Ag, Al, Au and Cu as seen in Fig. 3(g)) employing N-layer matrix formalism.…”

Section: Plasmonic Biosensors For Cancer Diagnosismentioning

confidence: 99%

A review on hybridization of plasmonic and photonic crystal biosensors for effective cancer cell diagnosis

Kumela,

Gemta,

Hordofa

et al. 2023

Nanoscale Adv.

View full text Add to dashboard Cite

show abstract

“…Amongst these materials, Au is usually used in SPR based optical fiber sensors due to its properties such as chemically stable and not oxidized. Additionally, Au possess absorption peak in the visible region [18][19][20]. However, the sensors require a robust material when exposed to the gas in the harsh environment.…”

Section: Introductionmentioning

confidence: 99%

Structure Design and Sensitivity Optimization of Optical Fiber Biosensor Based Au Nano Column - TiO2 Heterostructure

Younus,

Ameen,

Salih

2024

Trends Sci

View full text Add to dashboard Cite

An investigation on a single mode optical fiber sensor-based surface plasmon resonance was carried out in this work. A titanium dioxide (TiO2) coated gold Nano-column (Au) are deposited on the proposed sensor and theoretically analyzed using COMSOL Muliphysics software 5.3. Presence of TiO2 over the Au Nano-column can improve the sensitivity of the sensor and tune the resonance peak of transmission spectrum from visible region to near-infrared region. The size effect of TiO2 nanoparticles on the sensor performance is studied. The optimum parameters of such as Au size and separation width between the Au Nano-column have been selected to enhance the performance of the sensor. In comparison, the sensor with TiO2 over Au Nano-column is significantly improve the sensitivity and develop the sensor performance. The greater sensitivity of 5243.76 nm/RIU (refractive index unit) is obtained of sensor with TiO2 over Au Nano-column when the external refractive index of analyte is varying from 1.33 to 1.39, while sensitivity of the sensor coated with Au Nano-column is obtained to be 4643.17 nm/RIU for the same analyte range. Above results can be used to predict the best parameters values of the sensor that corresponding to the greatest sensitivities of detection and finally opening new study in the field of gas sensors. HIGHLIGHTS Optical fiber biosensors are a devices that use to measure the analyte by using the optical field Optical fiber biosensors have a high detection speed and low-cost, compared to congenital sensors The optical fiber sensors based SPR are widely used for biosensor applications The novelty in this research is the fabricate of optical fiber sensor coated with TiO2 over Au Nano-column based SPR foe gas detection GRAPHICAL ABSTRACT

show abstract

Surface Plasmon Resonance-Based Fiber-Optic Metallic Multilayer Biosensors

Cited by 13 publications

References 32 publications

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

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

A review on hybridization of plasmonic and photonic crystal biosensors for effective cancer cell diagnosis

Structure Design and Sensitivity Optimization of Optical Fiber Biosensor Based Au Nano Column - TiO2 Heterostructure

Contact Info

Product

Resources

About