Search results for "MAGNETIC NANO-PARTICLES"

showing 2 items of 2 documents

Kinetics of doublet formation in bicomponent magnetic suspensions: The role of the magnetic permeability anisotropy

2017

Micron-sized particles (microbeads) dispersed in a suspension of magnetic nanoparticles, i.e., ferrofluids, can be assembled into different types of structures upon application of an externalmagnetic field. This paper is devoted to theoretical modeling of a relative motion of a pair of microbeads (either soft ferromagnetic or diamagnetic) in the ferrofluid under the action of applied uniform magnetic field which induces magnetic moments in the microbeads making them attracting to each other. The model is based on a point-dipole approximation for the magnetic interactions between microbeads mediated by the ferrofluid; however, the ferrofluid is considered to possess an anisotropic magnetic p…

MAGNETIC PERMEABILITYPOINT-DIPOLE APPROXIMATIONFerrofluidMaterials scienceMagnetism02 engineering and technology01 natural sciencesMAGNETISMPhysics::Fluid DynamicsTHEORETICAL MODELINGUNIFORM MAGNETIC FIELDS0103 physical sciencesNANOPARTICLES[PHYS.COND]Physics [physics]/Condensed Matter [cond-mat]PERMEABILITY ANISOTROPY010306 general physicsSUSPENSIONS (COMPONENTS)ANISOTROPYEXTERNAL MAGNETIC FIELDMagnetic momentMICRON-SIZED PARTICLESMAGNETIC FIELDSMAGNETIC FLUIDS021001 nanoscience & nanotechnologyMagnetic fieldMAGNETIC INTERACTIONSMagnetic anisotropySUSPENSIONS (FLUIDS)FerromagnetismMAGNETIC MOMENTSChemical physicsMAGNETIC NANO-PARTICLESNANOMAGNETICSMAGNETIC ANISOTROPYDiamagnetismMagnetic nanoparticles0210 nano-technology[PHYS.COND.CM-SCM]Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft]ANISOTROPIC MEDIA
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A novel TiO2-assisted magnetic nanoparticle separator for treatment and inactivation of bacterial contaminants in aquatic systems

2014

Ferromagnetic nanoparticles (Fe-nanoparticles) have been functionalized with recombinant poly- Glu [glutamic acid]-tagged silicatein, a biomineral-synthesizing enzyme from siliceous sponges that forms the inorganic silica skeleton of those animals. The biocatalytic activity of silicatein was used to form a titania (TiO2) shell around the iron nanoparticle core, using the water-soluble non- natural substrate titanium bis(ammonium lactato)-dihydroxide (TiBALDH). Thereby the diameter of the nanoparticles increases from 7 nm to ≈22 nm. This procedure also allows the layer-by-layer fabrication of titania/silica- Fe-nanoparticles. SEM/EDX analysis confirmed the presence of the Ti and Si signals i…

aquatic system; bacterial contaminants; magnetic nano-particles; TiOAqueous solutionFabricationMaterials scienceFerromagnetic material propertiesGeneral Chemical EngineeringInorganic chemistrySubstrate (chemistry)chemistry.chemical_elementNanoparticleGeneral ChemistrychemistryPhotocatalysisSeparator (electricity)TitaniumRSC Adv.
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