Graphene based chalcogenide fiber-optic evanescent wave sensor for detection of hemoglobin in human blood

Sharma, Anuj K.; Gupta, Jyoti

doi:10.1016/j.yofte.2018.01.012

Cited by 35 publications

(29 citation statements)

References 23 publications

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“…Graphene and GO conductivity are modified as a function of surface adsorption, resulting in an effective refractive index variation. This feature was explored for gas [14,15], volatile organic compounds [16,17], biological compounds [18,19], and humidity [20] detection. Additionally, graphene also has been explored as diaphragm material for fiber sensors based on Fabry-Perot interferometry.…”

Section: Introductionmentioning

confidence: 99%

Tuning of Fiber Optic Surface Reflectivity through Graphene Oxide-Based Layer-by-Layer Film Coatings

et al. 2020

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The use of graphene oxide-based coatings on optical fibers are investigated, aiming to tune the reflectivity of optical fiber surfaces for use in precision sensing devices. Graphene oxide (GO) layers are successfully deposited onto optical fiber ends, either in cleaved or hollow microspheres, by mounting combined bilayers of polyethylenimine (PEI) and GO layers using the Layer-by-Layer (LbL) technique. The reflectivity of optical fibers coated with graphene oxide layers is investigated for the telecom region allowing to both monitor layer growth kinetics and cavity characterization. Tunable reflective surfaces are successfully attained in both cleaved optical fibers and hollow microsphere fiber-based sensors by simply coating them with PEI/GO layers through the LbL film technique.

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Section: Introductionmentioning

confidence: 99%

Tuning of Fiber Optic Surface Reflectivity through Graphene Oxide-Based Layer-by-Layer Film Coatings

et al. 2020

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“…In supercapacitors, they can most probably be used as conductive plates due to their large surface area to mass ratio [24]-such an application can be a significant contribution due to an attribute of green energy solutions in electric vehicles, airplanes, and cars. Graphene has been successfully applied in the detection of glucose [25], cholesterol [26], hemoglobin [27], and cancer cells [28]. This is facilitated by its high sensitivity to changes in molecular activities since the carbon atoms in its structure are exposed to the surroundings.…”

Section: Properties and Potential Applications Of Graphenementioning

confidence: 99%

2D materials based heterostructures : a lithography free method.

Alruqi¹

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supportive and kind to me throughout this journey. I got to learn a lot from his experience, his feedback has always been of great asset and I am honored that I got the opportunity to be under his worthy guidance and to be in his prestigious research team. The knowledge and skills that I learned from him, have played a huge role in the enhancement of my scientific career. Next, I want to thank all the teachers who have taught me courses during my Ph.D. course-work, particularly, Dr. Chakram S. Jayanthi, the Chair-person of Physics Department at the University of Louisville, and, Dr. Ming Yu, Professor in Physics who taught me some valuable courses. It was a delight to be their student and I feel honored to call myself their student. I would further like to thank Dr. Chris. L Davis who is my graduate program advisor, whose advice has been very fruitful for me right from choosing courses to important decision during my Ph.D. journey. Dr. Chris. L Davis is not only a great student advisor but also a great gentleman who is always nice, kind and polite to his students. I will always remain grateful for the kindness that he showed towards me. x 2.5.2 Scanning Electron Microscope .

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“…The sensitivity of the as-developed LSPR-based fiber sensor against glucose solutions of concentration ranging from 1.25 to 20% resulted in glucose sensitivity of approximately 0.9375 nm/%. Sharma and Gupta presented a graphene-based chalcogenide fiber optic sensor for hemoglobin detection in human blood samples [222]. The evanescent wave of the optical fiber interacts with the graphene monolayer that serves as a bio-enricher material in the proposed sensor.…”

Section: Other Biomolecule Sensingmentioning

confidence: 99%

Carbon Allotrope-Based Optical Fibers for Environmental and Biological Sensing: A Review

Yap

Chan

Tjin

et al. 2020

Sensors

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Recently, carbon allotropes have received tremendous research interest and paved a new avenue for optical fiber sensing technology. Carbon allotropes exhibit unique sensing properties such as large surface to volume ratios, biocompatibility, and they can serve as molecule enrichers. Meanwhile, optical fibers possess a high degree of surface modification versatility that enables the incorporation of carbon allotropes as the functional coating for a wide range of detection tasks. Moreover, the combination of carbon allotropes and optical fibers also yields high sensitivity and specificity to monitor target molecules in the vicinity of the nanocoating surface. In this review, the development of carbon allotropes-based optical fiber sensors is studied. The first section provides an overview of four different types of carbon allotropes, including carbon nanotubes, carbon dots, graphene, and nanodiamonds. The second section discusses the synthesis approaches used to prepare these carbon allotropes, followed by some deposition techniques to functionalize the surface of the optical fiber, and the associated sensing mechanisms. Numerous applications that have benefitted from carbon allotrope-based optical fiber sensors such as temperature, strain, volatile organic compounds and biosensing applications are reviewed and summarized. Finally, a concluding section highlighting the technological deficiencies, challenges, and suggestions to overcome them is presented.2 of 43 of target molecules or physical parameters. In some instances, surface-modified carbon allotropes also permit multi-parameter detection capabilities of carbon allotrope-based OFS [7]. As such, an insight into the recent advances of carbon allotrope-based OFS can serve as a guideline to develop an effective detection approach for emerging real-world applications. Many review articles on carbon allotrope-based OFS mainly focus on a single type of carbon allotrope and the fundamental theory of carbon allotrope-based OFS [8,9]. Thus, this comprehensive review article encompasses the properties, preparation, sensing mechanisms, nanocoating deposition techniques, physical and biochemical sensing applications. This review aims to highlight the recent research work on carbon allotrope-based OFS that will serve as a reference guide for researchers to develop optimal detection approaches for physical parameters or trace level monitoring of chemical and biomolecules. Four groups of carbon allotropes, including carbon nanotubes (CNT), carbon dots (CDs), graphene, and nanodiamonds (NDs), will be studied. Commonly adopted synthesis approaches, classification of various deposition techniques for the integration of carbon allotropes as the thin film coating of OFS as well as numerous examples of these carbon allotrope-based OFS will also be outlined.

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Graphene based chalcogenide fiber-optic evanescent wave sensor for detection of hemoglobin in human blood

Cited by 35 publications

References 23 publications

Tuning of Fiber Optic Surface Reflectivity through Graphene Oxide-Based Layer-by-Layer Film Coatings

Tuning of Fiber Optic Surface Reflectivity through Graphene Oxide-Based Layer-by-Layer Film Coatings

2D materials based heterostructures : a lithography free method.

Carbon Allotrope-Based Optical Fibers for Environmental and Biological Sensing: A Review

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