Asymmetric core-guided polarization-dependent plasmonic biosensor

Haider, Firoz; Mashrafi, Md.; Haider, Rakib; Aoni, Rifat Ahmmed; Ahmed, Rajib

doi:10.1364/ao.400301

Cited by 14 publications

(4 citation statements)

References 41 publications

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“…4(b) shows the suggested sensor's birefringence characteristics, which is illustrated for the sample RI of 1.38. The following equation can be used to calculate the sensor's birefringence feature [33]:…”

Section: B Model Analysismentioning

confidence: 99%

U-Grooved Selectively Coated and Highly Sensitive PCF-SPR Sensor for Broad Range Analyte RI Detection

et al. 2023

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Point-of-care (POC) diagnostic medical devices require simple but sensitive and inclusive detection capabilities. This study develops a unique photonic crystal fiber-based surface plasmon resonance (PCF-SPR) sensor that uses a u-grooved selective coating for extremely sensitive remote and biosensing applications. Scale-down (SCD) air holes control the path that incoming light takes through the sensor in order to activate the free electrons that are present there. To reduce outward radiation, perfectly matched layers (PML) of the absorbing boundary are integrated in addition to optimizing the structural geometry and material thickness. The Finite Element Method (FEM) is employed to quantitatively tune the properties of light directing and sensitivity of the proposed sensor. The proposed sensor has the maximum amplitude sensitivity (AS) of 1189 RIU -1 , the highest wavelength sensitivity (WS) of 12,500 nm/(RIU), and an outstanding resolution of 8.0×10 -6 RIU. The constructed model covers a large refractive index (RI) range of unknown samples, ranging from 1.29 to 1.40. This range allows this sensor to cover the detection of a wide range of bio-analytics, including viruses, cancer cells, carbohydrates, proteins, and DNA/RNA etc. We strongly believe that the suggested sensor will play an extremely useful role in the detection of POC biosample detection.

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Section: B Model Analysismentioning

confidence: 99%

U-Grooved Selectively Coated and Highly Sensitive PCF-SPR Sensor for Broad Range Analyte RI Detection

et al. 2023

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“…The use of polarization of light is an emerging research field that has progressed significantly in recent years within the biomedical field [35][36][37][38]. In this section, we are investigating the response of our proposed design to the changes in the polarization of incident light.…”

Section: Iii: Polarization Dependencementioning

confidence: 99%

Engineering the Optical Response of the Novel Plasmonic Binary Nanohole Array

Javidnasab

Azadi

Legha

et al. 2021

Preprint

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The phenomenon of extraordinary optical transmission (EOT) due to its advantages has been considered by researchers in various applications and in recent years many efforts have been made to engineer these structures to get the best possible response for desired applications. In this work, the optical properties of novel binary gold nano-hole arrays are investigated theoretically. We engineered the optical response of the system by adjusting the ratio of contribution of surface plasmon polariton (SPP) to localized surface plasmon resonance (LSPR) through the manipulation of the geometrical properties. The changes in the topology of this nano-hole array affected the intensity and the wavelength of transmission peaks. The sensitivity of the optical response to the refractive index was also investigated. The designed structure is a good candidate for use as a polarization-independent optical label-free sensor.

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“…The use of polarization of light is an emerging research field that has progressed significantly in recent years within the biomedical field [52][53][54][55]. In this section, we are investigating the response of our proposed design to the changes in the polarization of incident light.…”

Section: Polarization Dependencementioning

confidence: 99%

Engineering the Optical Response of the Novel Plasmonic Binary Nanohole Array

et al. 2021

View full text Add to dashboard Cite

The phenomenon of extraordinary optical transmission (EOT) due to its advantages has been considered by researchers in various applications, and in recent years, many efforts have been made to engineer these structures to get the best possible response for desired applications. In this work, the optical properties of novel binary gold nanohole arrays are investigated theoretically. We engineered the optical response of the system by adjusting the ratio of contribution of surface plasmon polariton (SPP) to localized surface plasmon resonance (LSPR) through the manipulation of the geometrical properties. The changes in the topology of this nanohole array affected the intensity and the wavelength of transmission peaks. The sensitivity of the optical response to the refractive index was also investigated. The designed structure is a good candidate for use as a polarization-independent optical label-free sensor.

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Asymmetric core-guided polarization-dependent plasmonic biosensor

Cited by 14 publications

References 41 publications

U-Grooved Selectively Coated and Highly Sensitive PCF-SPR Sensor for Broad Range Analyte RI Detection

U-Grooved Selectively Coated and Highly Sensitive PCF-SPR Sensor for Broad Range Analyte RI Detection

Engineering the Optical Response of the Novel Plasmonic Binary Nanohole Array

Engineering the Optical Response of the Novel Plasmonic Binary Nanohole Array

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