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  1. Article ; Online: Novel Bottom-Side Polished PCF-Based Plasmonic Biosensor for Early Detection of Hazardous Cancerous Cells.

    Singh, Shivam / Prajapati, Yogendra Kumar

    IEEE transactions on nanobioscience

    2023  Volume 22, Issue 3, Page(s) 647–654

    Abstract: This work presents a single-core bowl-shaped bottom-side polished (BSP) photonic crystal fiber (PCF) sensor based on surface plasmon resonance (SPR) concept for the early detection of hazardous cancer cells in human blood, skin, cervical, breast, and ... ...

    Abstract This work presents a single-core bowl-shaped bottom-side polished (BSP) photonic crystal fiber (PCF) sensor based on surface plasmon resonance (SPR) concept for the early detection of hazardous cancer cells in human blood, skin, cervical, breast, and adrenal glands. We have studied liquid samples of cancer-affected and healthy samples with their concentrations/refractive indices in the sensing medium. To induce a plasmonic effect in the PCF sensor, the bottom flat section of a silica PCF fiber is coated with a 40nm plasmonic material, such as gold. To strengthen this effect, a thin TiO
    MeSH term(s) Humans ; Female ; Gold ; Metal Nanoparticles ; Early Detection of Cancer ; Uterine Cervical Neoplasms/diagnosis ; Surface Plasmon Resonance
    Chemical Substances Gold (7440-57-5)
    Language English
    Publishing date 2023-06-29
    Publishing country United States
    Document type Journal Article
    ISSN 1558-2639
    ISSN (online) 1558-2639
    DOI 10.1109/TNB.2023.3233990
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: COVID-19 Detection Using Contemporary Biosensors and Machine Learning Approach: A Review.

    Agarwal, Sajal / Srivastava, Rupam / Kumar, Santosh / Prajapati, Yogendra Kumar

    IEEE transactions on nanobioscience

    2024  Volume 23, Issue 2, Page(s) 291–299

    Abstract: The current global pandemic not only claims countless human lives but also rocks the economies of every country on the planet. This fact needs the development of novel, productive, and efficient techniques to detect the SARS-CoV-2 virus. This review ... ...

    Abstract The current global pandemic not only claims countless human lives but also rocks the economies of every country on the planet. This fact needs the development of novel, productive, and efficient techniques to detect the SARS-CoV-2 virus. This review article discusses the current state of SARS-CoV-2 virus detection methods such as electrochemical, fluorescent, and electronic, etc., as well as the potential of optical sensors with a wide range of novel approaches and models. This review provides a comprehensive comparison of various detection methods by comparing the various techniques in depth. In addition, there is a brief discussion of the futuristic approach combining optical sensors with machine learning algorithms. It is believed that this study would prove to be critical for the scientific community to explore solutions for detecting viruses with improved functionality.
    MeSH term(s) Humans ; COVID-19/diagnosis ; SARS-CoV-2 ; Algorithms ; Machine Learning ; Pandemics ; Biosensing Techniques
    Language English
    Publishing date 2024-03-28
    Publishing country United States
    Document type Review ; Journal Article
    ISSN 1558-2639
    ISSN (online) 1558-2639
    DOI 10.1109/TNB.2023.3342126
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Plasmonics-based gas sensor with photonic spin hall effect in broad terahertz frequency range under variable chemical potential of graphene.

    Sharma, Anuj K / Kumar, Parmod / Prajapati, Yogendra Kumar

    Optical and quantum electronics

    2022  Volume 54, Issue 6, Page(s) 328

    Abstract: Graphene monolayer of sub-nanometer thickness possesses strong metallic and plasmonic behavior in a broad terahertz (THz) frequency range. This plasmonic effect can be considerably manipulated when graphene layer is subjected to a variable chemical ... ...

    Abstract Graphene monolayer of sub-nanometer thickness possesses strong metallic and plasmonic behavior in a broad terahertz (THz) frequency range. This plasmonic effect can be considerably manipulated when graphene layer is subjected to a variable chemical potential (E
    Supplementary information: The online version contains supplementary material available at 10.1007/s11082-022-03626-7.
    Language English
    Publishing date 2022-05-12
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 189950-8
    ISSN 1572-817X ; 0306-8919
    ISSN (online) 1572-817X
    ISSN 0306-8919
    DOI 10.1007/s11082-022-03626-7
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    In stock of ZB MED Bonn / Germany

    Z 84/703: Show issues

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  4. Article: Graphene-Based Plasmonic Sensor at THz Frequency with Photonic Spin Hall Effect Assisted by Magneto-optic Phenomenon.

    Kumar, Parmod / Sharma, Anuj K / Prajapati, Yogendra Kumar

    Plasmonics (Norwell, Mass.)

    2022  Volume 17, Issue 3, Page(s) 957–963

    Abstract: Graphene monolayer of sub-nanometer thickness shows strong metallic and plasmonic behavior in terahertz (THz) frequency range. This plasmonic effect varies considerably when graphene layer is placed under a magnetic field of appropriate strength. The ... ...

    Abstract Graphene monolayer of sub-nanometer thickness shows strong metallic and plasmonic behavior in terahertz (THz) frequency range. This plasmonic effect varies considerably when graphene layer is placed under a magnetic field of appropriate strength. The strong adsorption characteristic of graphene layer is another advantage. In this work, a photonic spin Hall effect (PSHE)-based plasmonic sensor consisting of germanium prism, organic dielectric layer, and graphene monolayer is simulated and analyzed in THz aiming at highly sensitive and reliable sensing under variable magnetic field. Modified Otto configuration and magneto-optic effect in graphene are considered. The sensor's performance is examined in terms of sensitivity, limit of detection (LOD), and figure of merit (FOM). The analysis indicates that LOD of the order of 10
    Language English
    Publishing date 2022-01-14
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2237548-X
    ISSN 1557-1963 ; 1557-1955
    ISSN (online) 1557-1963
    ISSN 1557-1955
    DOI 10.1007/s11468-021-01569-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Design and Analysis of an SPR Sensor Based on Antimonene and Platinum for the Detection of Formalin.

    Singh, Maneesh Kumar / Pal, Sarika / Prajapati, Yogendra Kumar

    IEEE transactions on nanobioscience

    2022  Volume 22, Issue 1, Page(s) 106–112

    Abstract: Detection of formalin to prevent food adulteration, especially in tropical countries, is of primary concern for public health issues. Life-threatening diseases such as leukaemia and lymphoma occur due to the regular consumption of formalin with food. ... ...

    Abstract Detection of formalin to prevent food adulteration, especially in tropical countries, is of primary concern for public health issues. Life-threatening diseases such as leukaemia and lymphoma occur due to the regular consumption of formalin with food. Traditionally, spectrophotometry and chromatography-based sensors have been employed to detect formalin, which have limitations related to their ability to achieve high sensitivity, selectivity, and fast response. In this paper, a surface plasmon resonance (SPR) sensor for improved sensing of formalin is proposed. The Kretschmann configured SPR sensor probe is designed using silver (Ag), platinum (Pt), antimonene, and chitosan, which increases the sensitivity and selectivity. The maximum sensitivity achieved for the proposed SPR sensor is 206.86 °/RIU. The distribution of the electric field (Ey) component of the electric field is also evaluated to analyze the field enhancement at different layer interfaces and to calculate the penetration depth (176.75 nm).
    MeSH term(s) Surface Plasmon Resonance ; Platinum ; Formaldehyde ; Silver
    Chemical Substances Platinum (49DFR088MY) ; Formaldehyde (1HG84L3525) ; Silver (3M4G523W1G)
    Language English
    Publishing date 2022-12-29
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1558-2639
    ISSN (online) 1558-2639
    DOI 10.1109/TNB.2022.3159532
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: D-shaped fiber optic plasmonic sensors using planar and grating structures of silver and gold: design and analysis.

    Kumar, Shambhu / Maurya, Jitendra Bahadur / Roumi, Bita / Abdi-Ghaleh, Reza / Prajapati, Yogendra Kumar

    Applied optics

    2023  Volume 62, Issue 16, Page(s) E130–E136

    Abstract: In this paper, a D-shaped optical fiber plasmonic sensor using planar and grating structures of silver and gold metals is simulated using the finite element method under the wave optics module of COMSOL Multiphysics. Performance defining parameters are ... ...

    Abstract In this paper, a D-shaped optical fiber plasmonic sensor using planar and grating structures of silver and gold metals is simulated using the finite element method under the wave optics module of COMSOL Multiphysics. Performance defining parameters are based on (i) the transmittance curve, viz., resonance wavelength (
    Language English
    Publishing date 2023-09-14
    Publishing country United States
    Document type Journal Article
    ISSN 1539-4522
    ISSN (online) 1539-4522
    DOI 10.1364/AO.481145
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: A nanolayered structure for sensitive detection of hemoglobin concentration using surface plasmon resonance.

    Singh, Maneesh Kumar / Pal, Sarika / Verma, Alka / Das, Ritwick / Prajapati, Yogendra Kumar

    Applied physics. A, Materials science & processing

    2021  Volume 127, Issue 11, Page(s) 832

    Abstract: The objective of the proposed work is to design a biosensor that monitors hemoglobin (Hb) concentration using the combination of nanolayer, i.e., barium titanate ( ... ...

    Abstract The objective of the proposed work is to design a biosensor that monitors hemoglobin (Hb) concentration using the combination of nanolayer, i.e., barium titanate (BaTiO
    Language English
    Publishing date 2021-10-13
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1398311-8
    ISSN 1432-0630 ; 0947-8396
    ISSN (online) 1432-0630
    ISSN 0947-8396
    DOI 10.1007/s00339-021-04985-w
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