Optical Slot Waveguide With Grating-Loaded Cladding of Silicon and Titanium Dioxide for Label-Free Bio-Sensing

Sulabh,; Singh, Lalit; Jain, S. C.; Kumar, Mukesh

doi:10.1109/jsen.2019.2910278

Cited by 23 publications

(3 citation statements)

References 36 publications

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“…Photonic sensing technology is versatile and shows excellent reliability than its electronic counterparts. Optical biosensors have been used for medical diagnosis, detection of harmful pathogens and impurities [1][2][3]. Optical sensing is very significant especially in the field of light-analyte interaction as well as in its miniaturization.…”

Section: ░ 1 Introductionmentioning

confidence: 99%

“…Optical sensing is very significant especially in the field of light-analyte interaction as well as in its miniaturization. To realize a real-time as well as label-free detection technique, different optical sensors have been proposed based on slot waveguides [1], nano-cavity [2], micro-ring resonators [3], gratings-based devices [4], surface plasmon technique [5], photonic crystal-based structures [6], digital holographic microscopy (DHM) [7], and light scattering measurement (LSM) [8]. DHM and LSM suffer from less accuracy, while surface plasmon techniques are restricted by long acquisition time and low throughput.…”

Section: ░ 1 Introductionmentioning

confidence: 99%

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Detection and Analysis of Bacterial Water using Photonic Crystal Ring-Resonator Based Refractive-Index Sensor on SOI Platform

Kumar

Bharti

Bindal

2022

IJEER

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A refractive-index biosensor is modeled using a photonic crystal ring resonator. The proposed sensor possesses a high selectivity and high quality-factor against different bacterial water samples. The introduction of the circular rim in the ring resonator structure is responsible for a sharp resonance that makes it suitable for detecting bacterial impurities. The sufficiently separated resonant peak for different samples offers a possibility of highly selective label-free bacterial water detection. The proposed biosensor is highly sensitive, real-time, lab-on-chip, and label-free, which is necessary for on-site detection. The proposed sensor is designed using a silicon-on-insulator platform.

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Section: ░ 1 Introductionmentioning

confidence: 99%

Section: ░ 1 Introductionmentioning

confidence: 99%

Detection and Analysis of Bacterial Water using Photonic Crystal Ring-Resonator Based Refractive-Index Sensor on SOI Platform

Kumar

Bharti

Bindal

2022

IJEER

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“…The design of the coating layer can be addressed for a specific target molecule through recognition sites, partitioning, and charge or size exclusion (Martínez-Máñez et al, 2011). Specific claddings containing receptor molecules have been used on refractive index waveguide devices as a habitual approach to boost any change in the refractive index or motivate a change in the thickness of the cladding itself (Ma et al, 2002) (Sulabh et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Sol-Gel Thin Film Processing for Integrated Waveguide Sensors

Alberti

Jágerská

2021

Front. Mater.

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Integrated opto-chemical sensors present great advantages in comparison to the current lab equipment. They bring portability, reduced costs, facilitate in-situ measurements, as well as largely reduced sample volumes. In this quest, standard processing protocols over established materials, such as silicon nitride, silicon, silicon dioxide, titanium oxide, and even a wide variety of polymers have so far been the key toward on-chip devices. However, if very specific materials in terms of composition and tailored properties are required, the deposition via a solution represents a viable alternative. In this review, we highlight the role of sol-gel chemistry and top-down processing of sol-gel thin film layers in the design of waveguide-based optical sensors. In particular, we stress the advantages of porous sol-gel based materials as a new approach to increase sensitivity and selectivity, first when used as claddings, and, more recently, as waveguides with enhanced light–analyte interaction. We finally discuss the future perspectives of such devices to increase specificity in complex matrices, which is of utmost importance for bio-sensing.

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Slot Waveguide with Grating Based Cladding for Protein Detection

Sulabh

Kumar

2021

Springer Proceedings in Physics

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Optical Slot Waveguide With Grating-Loaded Cladding of Silicon and Titanium Dioxide for Label-Free Bio-Sensing

Cited by 23 publications

References 36 publications

Detection and Analysis of Bacterial Water using Photonic Crystal Ring-Resonator Based Refractive-Index Sensor on SOI Platform

Detection and Analysis of Bacterial Water using Photonic Crystal Ring-Resonator Based Refractive-Index Sensor on SOI Platform

Sol-Gel Thin Film Processing for Integrated Waveguide Sensors

Slot Waveguide with Grating Based Cladding for Protein Detection

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