The influences of nano-ZrO2 (NZ), nano-TiO2 (NT), nano-Fe2O3 (NF) and nano-Al2O3 (NA) additions on properties of the fresh and hardened cement paste in comparison with the fine cement paste were experimentally studied. Mini slump and flow cone tests were conducted on fresh cement pastes. Moreover the compressive and tensile strength of hardened cement paste were measured. SEM micrographs and XR...

Abstract In this paper, a Taylor cone model in the nanoscale is configured using many-body dissipative particle dynamics method. The sharpening process of and breakup at different electric field intensities charge concentrations are systematically investigated. Under strong field, hemispherical droplet sharpened over time evolves into conic one. Then cusp emits thin jet. Finally, shrinks semi-s...

We present a numerical model of an accretion disc with mean-field dynamo action that develops a fast pressure-driven outflow within a cone near the rotation axis and a slower centrifugally driven outflow in the outer parts of the disc. The fast outflow in the cone is confined by the azimuthal field which is produced by the dynamo in the disc and advected to the disc corona. The fast outflow has...

Functional nano-templates enable self-assembly of otherwise impossible arrangements of molecules. A particular class of such templates is that of sp2 hybridized single layers of hexagonal boron nitride or carbon (graphene) on metal supports. If the substrate and the single layer have a lattice mismatch, superstructures are formed. On substrates like rhodium or ruthenium these superstructures ha...

Two-dimensional van der Waals (2D-vdW) layered hexagonal boron nitride (h-BN) has gained tremendous research interest over recent years due to its unconventional domain growth morphology, fascinating properties and application potentials as an excellent dielectric layer for 2D-based nano-electronics. However, the unidirectional of h-BN thin films directly on insulating substrates remains signif...

Boron nitride (BN) is considered to be a promising substrate for graphene-based devices in part because its large band gap can serve to insulate graphene in layered heterostructures. At mid-infrared frequencies, graphene supports surface plasmon polaritons (SPPs), whereas hexagonal-BN (h-BN) is found to support surface phonon polaritons (SPhPs). We report on the observation of infrared polarito...

The space charge characteristics of cross-linked polyethylene (XLPE) can be improved to some extent by doping the appropriate amount nano-MgO. In this study, in order explore influence nano-MgO on and electric field distributions composite insulation high voltage direct current (HVDC) cable joints, effect concentration depth density deep traps MgO/XLPE was first analyzed. On basis, transport si...

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