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  1. Book ; Online: Mesh of Things (MoT) Network-Driven Anomaly Detection in Connected Objects

    Vijay, Rathinamala / V., Prabhakar. T.

    2022  

    Abstract: This paper presents a hybrid Mesh of Things (MoT) network performance model to evaluate the end-to-end Packet Delivery Ratio (PDR) and latency. These PDR and latency measures are used to identify both a de-tangled mesh as well as to track the mesh ... ...

    Abstract This paper presents a hybrid Mesh of Things (MoT) network performance model to evaluate the end-to-end Packet Delivery Ratio (PDR) and latency. These PDR and latency measures are used to identify both a de-tangled mesh as well as to track the mesh successfully. A de-tangled mesh is a mesh with an anomaly where one or more nodes are separated from the rest of the mesh network. We demonstrate the performance model of a hybrid BLE mesh-PLC network by considering an air cargo monitoring application and validate with experimental PDR and latency data. The link uncertainty in Bluetooth Low Energy (BLE) mesh may be attributed to (a) RF interference,(b)~Transmitter's vicinity range, and (c) Receiver sensitivity. In contrast, the link uncertainty in Power Line Communication (PLC) may be attributed to: (a) Colored background noise, (b)~Channel frequency response, and (c) Impulse noise appearing due to load state as well as variations in the powerline. In our work, we construct an equivalent Bayesian network for the mesh to be tracked, capture the uncertainty within the mesh links using the Noisy-OR and the Noisy-Integer addition model and perform belief propagation to detect and localize a network anomaly.
    Keywords Electrical Engineering and Systems Science - Systems and Control
    Subject code 006
    Publishing date 2022-12-23
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Recent Advances and Strategies in MXene-Based Electrodes for Supercapacitors

    Surya V. Prabhakar Vattikuti / Jaesool Shim / Pitcheri Rosaiah / Alain Mauger / Christian M. Julien

    Nanomaterials, Vol 14, Iss 1, p

    Applications, Challenges and Future Prospects

    2023  Volume 62

    Abstract: With the growing demand for technologies to sustain high energy consumption, supercapacitors are gaining prominence as efficient energy storage solutions beyond conventional batteries. MXene-based electrodes have gained recognition as a promising ... ...

    Abstract With the growing demand for technologies to sustain high energy consumption, supercapacitors are gaining prominence as efficient energy storage solutions beyond conventional batteries. MXene-based electrodes have gained recognition as a promising material for supercapacitor applications because of their superior electrical conductivity, extensive surface area, and chemical stability. This review provides a comprehensive analysis of the recent progress and strategies in the development of MXene-based electrodes for supercapacitors. It covers various synthesis methods, characterization techniques, and performance parameters of these electrodes. The review also highlights the current challenges and limitations, including scalability and stability issues, and suggests potential solutions. The future outlooks and directions for further research in this field are also discussed, including the creation of new synthesis methods and the exploration of novel applications. The aim of the review is to offer a current and up-to-date understanding of the state-of-the-art in MXene-based electrodes for supercapacitors and to stimulate further research in the field.
    Keywords supercapacitors ; MXenes ; electrodes ; nanostructures ; wearable devices ; Chemistry ; QD1-999
    Subject code 600
    Language English
    Publishing date 2023-12-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
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  3. Article: Synthesis, Characterization and Investigation of Optical and Electrical Properties of Polyaniline/Nickel Ferrite Composites.

    Kolhar, Priyanka / Sannakki, Basavaraja / Verma, Meenakshi / S V, Prabhakar / Alshehri, Mansoor / Shah, Nehad Ali

    Nanomaterials (Basel, Switzerland)

    2023  Volume 13, Issue 15

    Abstract: Nickel ferrite nanoparticles are prepared by using a low-temperature self-propagating solution combustion method using urea as fuel. The prepared nickel ferrite nanoparticles were doped with polyaniline in the three different weight ratios of 10%, 30% ... ...

    Abstract Nickel ferrite nanoparticles are prepared by using a low-temperature self-propagating solution combustion method using urea as fuel. The prepared nickel ferrite nanoparticles were doped with polyaniline in the three different weight ratios of 10%, 30% and 50% by using an in situ polymerization method and by adding ammonium persulfate as an oxidizing agent. The obtained samples were characterized by using XRD, FTIR, SEM and a UV-visible spectrophotometer. XRD examined crystalline peaks of ferrites and amorphous peak of polyaniline and confirmed the formation of the composites. FTIR examined the chemical nature of samples and showed peaks due to polyaniline and the characteristic peaks that were less than 1000 cm
    Language English
    Publishing date 2023-07-31
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662255-5
    ISSN 2079-4991
    ISSN 2079-4991
    DOI 10.3390/nano13152223
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  4. Article ; Online: Electrochemical immunosensing of tumor markers.

    Palakollu, Venkata Narayana / Veera Manohara Reddy, Y / Shekh, Mehdihasan I / Vattikuti, S V Prabhakar / Shim, Jaesool / Karpoormath, Rajshekhar

    Clinica chimica acta; international journal of clinical chemistry

    2024  Volume 557, Page(s) 117882

    Abstract: The rising incidence and mortality rates of cancer have led to a growing need for precise and prompt early diagnostic approaches to effectively combat this disease. However, traditional methods employed for detecting tumor cells, such as ... ...

    Abstract The rising incidence and mortality rates of cancer have led to a growing need for precise and prompt early diagnostic approaches to effectively combat this disease. However, traditional methods employed for detecting tumor cells, such as histopathological and immunological techniques, are often associated with complex procedures, high analytical expenses, elevated false positive rates, and a dependence on experienced personnel. Tracking tumor markers is recognized as one of the most effective approaches for early detection and prognosis of cancer. While onco-biomarkers can also be produced in normal circumstances, their concentration is significantly elevated when tumors are present. By monitoring the levels of these markers, healthcare professionals can obtain valuable insights into the presence, progression, and response to treatment of cancer, aiding in timely diagnosis and effective management. This review aims to provide researchers with a comprehensive overview of the recent advancements in tumor markers using electrochemical immunosensors. By highlighting the latest developments in this field, researchers can gain a general understanding of the progress made in the utilization of electrochemical immunosensors for detecting tumor markers. Furthermore, this review also discusses the current limitations associated with electrochemical immunosensors and offers insights into paving the way for further improvements and advancements in this area of research.
    MeSH term(s) Humans ; Biomarkers, Tumor ; Biosensing Techniques ; Electrochemical Techniques ; Immunoassay/methods ; Neoplasms/diagnosis
    Chemical Substances Biomarkers, Tumor
    Language English
    Publishing date 2024-03-21
    Publishing country Netherlands
    Document type Journal Article ; Review
    ZDB-ID 80228-1
    ISSN 1873-3492 ; 0009-8981
    ISSN (online) 1873-3492
    ISSN 0009-8981
    DOI 10.1016/j.cca.2024.117882
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  5. Article: In-situ Pt nanoparticles decorated BiOBr heterostructure for enhanced visible light-based photocatalytic activity: Synergistic effect

    Devarayapalli, Kamakshaiah Charyulu / Zeng, Jie / Lee, Dae Sung / Vattikuti, S.V. Prabhakar / Shim, Jaesool

    Chemosphere. 2022 July, v. 298

    2022  

    Abstract: Advanced functional materials for photocatalytic hydrogen (H₂) generation using abundant solar energy are the core of new and renewable energy research. In this paper, we report the in-situ deposition of platinum quantum-sized particles (Pt QDs) on ... ...

    Abstract Advanced functional materials for photocatalytic hydrogen (H₂) generation using abundant solar energy are the core of new and renewable energy research. In this paper, we report the in-situ deposition of platinum quantum-sized particles (Pt QDs) on bismuth oxybromide (BBr) 3D marigold flowers with exposed (101)/(110) facets (i.e. BBr–Pt) hierarchies prepared by a simple solvo-thermal method acting as a surfactant/structure stabilizer in the presence of CTAB. Synthesized samples were characterized by a series of analytical techniques. Intimate contact as demonstrated by HRTEM, effect of Pt loading in 3D-BiOBr nanostructure on photocatalytic H₂ production and crystal violet (CV) dye degradation rate under white LED light irradiation was studied. This was greatly improved by loading Pt QDs on BBr, the latter showing the highest photocatalytic activity for BBr-2Pt nanostructure, due to the synergistic effect of quantum-sized Pt nanoparticles and exposed ((101) and (110) planes). The BBr–2Pt nanostructure photocatalysts showed highest H₂ generation of 320.69 μmol g⁻¹, which is 142 folds larger than bare BBr (2.26 μmol g⁻¹).
    Keywords bismuth ; gentian violet ; irradiation ; photocatalysis ; photocatalysts ; platinum ; solar energy ; stabilizers ; surfactants ; synergism
    Language English
    Dates of publication 2022-07
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 120089-6
    ISSN 1879-1298 ; 0045-6535 ; 0366-7111
    ISSN (online) 1879-1298
    ISSN 0045-6535 ; 0366-7111
    DOI 10.1016/j.chemosphere.2022.134125
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 2540: Show issues Location:
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  6. Article ; Online: Pseudocapacitive Features of Freestanding Nickel-Zinc Organometallic Nanostructure for High-energy Density Coin-cell Asymmetric Supercapacitors.

    Zeng, Jie / Devarayapalli, Kamakshaiah Charyulu / Li, Changping / Vattikuti, S V Prabhakar / Shim, Jaesool

    Chemistry, an Asian journal

    2022  Volume 17, Issue 22, Page(s) e202200685

    Abstract: Binder-free two-dimensional mesh-like structure of nickel-zinc metal-organic framework on in-situ-coated carbon cloth (Ni-Zn MOF/CC) and Ni-Zn MOF powder were developed via a solvo-hydrothermal reaction for electrochemical storage application. The ... ...

    Abstract Binder-free two-dimensional mesh-like structure of nickel-zinc metal-organic framework on in-situ-coated carbon cloth (Ni-Zn MOF/CC) and Ni-Zn MOF powder were developed via a solvo-hydrothermal reaction for electrochemical storage application. The electrochemical properties of these electrodes show that the electrodes self-assembled on carbon cloth substrates exhibit remarkably excellent performance. The Ni-Zn MOF/CC electrode exhibited a capacitance of 653.54 F/g at 1 A/g through a capacity retaining of 87.65% after 10000 cycles. Furthermore, the Ni-Zn MOF//AC coin-cell asymmetric supercapacitor device (CASD) exhibited remarkable energy and power densities of 54.31 Wh/kg and 825 W/kg, respectively, with adequate capacitance retention up to 94.63% over 5000 cycles at 1.5 V. The CASD also exhibited a significant power density of 4950 W/kg at 19.67 W h/kg, which suggests that these in-situ developed MOF-based electrodes may discover application in energy storage devices.
    Language English
    Publishing date 2022-09-22
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2233006-9
    ISSN 1861-471X ; 1861-4728
    ISSN (online) 1861-471X
    ISSN 1861-4728
    DOI 10.1002/asia.202200685
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  7. Article ; Online: In-situ Pt nanoparticles decorated BiOBr heterostructure for enhanced visible light-based photocatalytic activity: Synergistic effect.

    Devarayapalli, Kamakshaiah Charyulu / Zeng, Jie / Lee, Dae Sung / Vattikuti, S V Prabhakar / Shim, Jaesool

    Chemosphere

    2022  Volume 298, Page(s) 134125

    Abstract: Advanced functional materials for photocatalytic hydrogen ( ... ...

    Abstract Advanced functional materials for photocatalytic hydrogen (H
    MeSH term(s) Bismuth/chemistry ; Catalysis ; Light ; Nanoparticles
    Chemical Substances bismuth oxybromide (N427L0NH3S) ; Bismuth (U015TT5I8H)
    Language English
    Publishing date 2022-02-26
    Publishing country England
    Document type Journal Article
    ZDB-ID 120089-6
    ISSN 1879-1298 ; 0045-6535 ; 0366-7111
    ISSN (online) 1879-1298
    ISSN 0045-6535 ; 0366-7111
    DOI 10.1016/j.chemosphere.2022.134125
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    In stock of ZB MED Cologne/Königswinter

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  8. Article ; Online: Carbon Nitride Coupled Co

    Vattikuti, S V Prabhakar / Hoang Ngoc, Cam Tu / Nguyen, Hoa / Nguyen Thi, Nam Hai / Shim, Jaesool / Dang, Nam Nguyen

    The journal of physical chemistry letters

    2023  Volume 14, Issue 42, Page(s) 9412–9423

    Abstract: Graphitic carbon nitride (CN) is a cost-effective and easily synthesized supercapacitor electrode material. However, its limited specific capacity has hindered its practical use. To address this, we developed a binary nanostructure by growing nanosized ... ...

    Abstract Graphitic carbon nitride (CN) is a cost-effective and easily synthesized supercapacitor electrode material. However, its limited specific capacity has hindered its practical use. To address this, we developed a binary nanostructure by growing nanosized Co
    Language English
    Publishing date 2023-10-12
    Publishing country United States
    Document type Journal Article
    ISSN 1948-7185
    ISSN (online) 1948-7185
    DOI 10.1021/acs.jpclett.3c02030
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  9. Article ; Online: Enriched photocatalytic and photoelectrochemical activities of a 2D/0D g-C

    Rajavaram, Ramaraghavulu / Vattikuti, S V Prabhakar / Shim, Jaesool / Liu, Xinghui / Hoai, Nguyen To / Nguyen Dang, Nam

    Nanoscale advances

    2023  Volume 5, Issue 23, Page(s) 6489–6500

    Abstract: Sunlight-powered photocatalysts made from ... ...

    Abstract Sunlight-powered photocatalysts made from CeO
    Language English
    Publishing date 2023-10-09
    Publishing country England
    Document type Journal Article
    ISSN 2516-0230
    ISSN (online) 2516-0230
    DOI 10.1039/d3na00774j
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  10. Article ; Online: High-Throughput Strategies for the Design, Discovery, and Analysis of Bismuth-Based Photocatalysts

    Surya V. Prabhakar Vattikuti / Jie Zeng / Rajavaram Ramaraghavulu / Jaesool Shim / Alain Mauger / Christian M. Julien

    International Journal of Molecular Sciences, Vol 24, Iss 1, p

    2022  Volume 663

    Abstract: Bismuth-based nanostructures (BBNs) have attracted extensive research attention due to their tremendous development in the fields of photocatalysis and electro-catalysis. BBNs are considered potential photocatalysts because of their easily tuned ... ...

    Abstract Bismuth-based nanostructures (BBNs) have attracted extensive research attention due to their tremendous development in the fields of photocatalysis and electro-catalysis. BBNs are considered potential photocatalysts because of their easily tuned electronic properties by changing their chemical composition, surface morphology, crystal structure, and band energies. However, their photocatalytic performance is not satisfactory yet, which limits their use in practical applications. To date, the charge carrier behavior of surface-engineered bismuth-based nanostructured photocatalysts has been under study to harness abundant solar energy for pollutant degradation and water splitting. Therefore, in this review, photocatalytic concepts and surface engineering for improving charge transport and the separation of available photocatalysts are first introduced. Afterward, the different strategies mainly implemented for the improvement of the photocatalytic activity are considered, including different synthetic approaches, the engineering of nanostructures, the influence of phase structure, and the active species produced from heterojunctions. Photocatalytic enhancement via the surface plasmon resonance effect is also examined and the photocatalytic performance of the bismuth-based photocatalytic mechanism is elucidated and discussed in detail, considering the different semiconductor junctions. Based on recent reports, current challenges and future directions for designing and developing bismuth-based nanostructured photocatalysts for enhanced photoactivity and stability are summarized.
    Keywords bismuth materials ; photocatalysts ; solar energy ; surface engineering ; visible light ; nanostructure ; Biology (General) ; QH301-705.5 ; Chemistry ; QD1-999
    Language English
    Publishing date 2022-12-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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