Superlubricity of MoS&lt;sub&gt;2&lt;/sub&gt; at Submicron Scale

Miura, Kouji

doi:10.1380/ejssnt.2019.124

Cited by 6 publications

(4 citation statements)

References 22 publications

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“…The chemical potential (μ) can be defined as the ability of an electron to leave the HOMO from the compound in the state of equilibrium. [41][42] The order of chemical potential for top four compounds is 205 > 209 > 190 > 159. The Absolute hardness and softness have defined as the potential of the compound to show their reactivity and stability respectively in the environment of the surrounding compound.…”

Section: Dft Analysis Of Top Four Compoundsmentioning

confidence: 99%

Pyrrolothiazolones as Potential Inhibitors for the nsP2B‐nsP3 Protease of Dengue Virus and Their Mechanism of Synthesis

et al. 2019

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Dengue fever is a severe disease in the present time. Based on literature, there is no effective approved medicine available in the market for the treatment of dengue fever. This fever is spreading rapidly and there is an urgency to find the potential and cost‐effective antiviral compounds for the development of medicine to cure the patients from dengue fever. Different computational and experimental approaches have been tried to find the potential inhibitors for the nsP2B‐nsP3 protease of dengue virus. In the present work, a four component one‐pot reaction was designed to get pyrrolothiazolones & its mechanism of synthesis was studied by density functional theory. A library based on pyrrolothiazolones was created using computational tools. Further, the designed compounds were docked to get the potent inhibitor aginst the nsP2B‐nsP3 protease of dengue virus. Further, different parameters like absorption, distribution, metabolism, excretion and toxicity were applied. DFT analysis of the hit compounds were performed using Gaussian 09. The molecular dynamics simulations study was performed to check the formation of complex between the screened compound and nsP2B‐nsP3 protease of dengue virus. Finally, the molecular mechanics‐Poisson Boltzmann surface area analysis was performed to determine the effective binding for the formation of complex of potent compound with the nsP2B‐nsP3 protease of dengue virus.

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Section: Dft Analysis Of Top Four Compoundsmentioning

confidence: 99%

Pyrrolothiazolones as Potential Inhibitors for the nsP2B‐nsP3 Protease of Dengue Virus and Their Mechanism of Synthesis

et al. 2019

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“…10 Its two-dimensional analogue, graphene, 11 have shown significant promise in ultralow friction in both nanoscale and microscale lubrication, [12][13][14][15] supported by in silico measurements. [16][17][18] The materials' extremely high strength, low shear resistance, relatively low cost and comparably high thermal conduction and dissipation performances are attributed to the materials' 2D-lamellar structures. [19][20][21] More recently a fluorine-functionalised derivative, fluorographene, has been explored as a potential candidate for macroscale low-friction lubrication.…”

Section: Introductionmentioning

confidence: 99%

Enhanced tribological properties of copper metal-matrix composites reinforced with fluorinated graphene oxide nanosheets

Savjani

Mercadillo

Hodgeman

et al. 2023

Preprint

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Applications of copper coatings on metal components are abundant owing to their high conductivities, corrosion resistance and anti-bacterial properties. However, applications of these coatings on moving parts are limited due to their poor tribological properties; tendencies to generate high friction and susceptibility to degradative wear. In this study, we have fabricated a fluorinated graphene oxide-copper metal matrix composite (FGO-CMMC) on a bearing steel substrate by a simple electrodeposition process in water. The FGO-CMMC coatings exhibited excellent lubrication performance under pin-on-disk (PoD) tribological sliding, which reduced CoF by 63 and 69%, compared to the GO-CMMC and pure copper coatings that were also prepared. The lubrication enhancement of the FGO-CMMCs is attributed to the tribochemical reaction of FGO with the AISI 52100 steel counterface initiated by sliding load. The formation of an asymmetric tribofilm structure on the sliding track is critical; the performance of the FGO/Cu tribofilm formed in the track is boosted by the continued fluorination of the counterface surface during PoD sliding, passivating the tribosystem from adhesion-driven breakdown. Other influences include the improved interlaminar shear strength of the FGO-containing composite. The excellent lubrication performance of copper coatings by FGO incorporation makes the CMMC a promising solid lubricant candidate for use in mechanical engineering applications.

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“…27 Its two-dimensional analogue, graphene, 28 has shown significant promise in ultralow friction in both nanoscale and microscale lubrication, [29][30][31][32] supported by in silico measurements. [33][34][35] The materials' extremely high strength, low shear resistance, relatively low cost and comparably high thermal conduction and dissipation performances are attributed to the materials' 2D-lamellar structures. [36][37][38] while due to its unique structure and chemical properties, graphene is essentially impermeable to most chemicals and gases.…”

Section: Introductionmentioning

confidence: 99%

Tribology of Copper Metal-Matrix Composites Reinforced with Fluorinated Graphene Oxide Nanosheets: Implications for Solid Lubricants in Mechanical Switches

Savjani

Mercadillo

Hodgeman

et al. 2023

Preprint

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Applications of copper coatings on steel switching mechanisms are abundant owing to their high conductivities and corrosion resistance that they impart on the engineered assemblies. However, applications of these coatings on such moving parts are limited due to their poor tribological properties; tendencies to generate high friction and susceptibility to degradative wear. In this study, we have fabricated a fluorinated graphene oxide-copper metal matrix composite (FGO-CMMC) on an AISI52100 bearing steel substrate by a simple electrodeposition process in water. The FGO-CMMC coatings exhibited excellent lubrication performance under pin-on-disk (PoD) tribological sliding at 1N load, which reduced CoF by 63 and 69%, compared to the GO-CMMC and pure copper coatings that were also prepared. Furthermore, FGO-CMMC achieved low friction and low wear at higher sliding loads. The lubrication enhancement of the FGO-CMMCs is attributed to the tribochemical reaction of FGO with the AISI 52100 steel counterface initiated by sliding load. The formation of an asymmetric tribofilm structure on the sliding track is critical; the performance of the FGO/Cu tribofilm formed in the track is boosted by the continued fluorination of the counterface surface during PoD sliding, passivating the tribosystem from adhesion-driven breakdown. The FGO-CMMC and GO-CMMC coatings also provide increased corrosion protection reaching 94.2 and 91.6 % compared to the bare steel substrate, allowing for the preservation of the long-term low friction performance of the coating. Other influences include the improved interlaminar shear strength of the FGO-containing composite. The excellent lubrication performance of copper coatings by FGO incorporation makes the CMMC a promising solid lubricant candidate for use in mechanical engineering applications.

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Superlubricity of MoS<sub>2</sub> at Submicron Scale

Cited by 6 publications

References 22 publications

Pyrrolothiazolones as Potential Inhibitors for the nsP2B‐nsP3 Protease of Dengue Virus and Their Mechanism of Synthesis

Pyrrolothiazolones as Potential Inhibitors for the nsP2B‐nsP3 Protease of Dengue Virus and Their Mechanism of Synthesis

Enhanced tribological properties of copper metal-matrix composites reinforced with fluorinated graphene oxide nanosheets

Tribology of Copper Metal-Matrix Composites Reinforced with Fluorinated Graphene Oxide Nanosheets: Implications for Solid Lubricants in Mechanical Switches

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