Aqueous dispersions of magnetite nanoparticles with NH3+ surfaces for magnetic manipulations of biomolecules and MRI contrast agents

The endocytic penetration mechanism of iron oxide magnetic nanoparticles with positively charged cover: A morphological approach

“…There are numerous studies on determining the toxicity of different types of NPs, and it is accepted that NPs covered with positive charge penetrate inside cells more efficiently, reducing toxicity (16,17). Previous results on HeLa cells showed that NPs functionalized with differently charged carbohydrates had different effects on internalization and cell survival (11).…”

Mathematical model for ciliary-induced transport in MHD flow of Cu-H 2 O nanofluids with magnetic induction

“…However the functionality and adaptability of magnetic nanofluids [23,24] has been established for over a decade. These particles are designed to interact intelligently with the bio-electro-magnetic fields in the human body or to externally applied magnetic fields.…”

“…Different organs of the human body can be more receptive to different types of magnetic nano-particles e.g. rod-like geometries of magnetite nano-particles as opposed to spherical-type nanoparticles have been found to be taken up by Kupffer cells days after vein infusion [24]. The clinical confirmation of magnetic nano-particle performance is a very strong motivation to engineers and scientists for examining theoretically the dynamics of the interaction of these particles with electrically-conducting biological fluid media e.g.…”

Synthesis of Composite Particles with Fe3O4core and Ag Shell for the Development of Fingerprints

“…[4][5][6][7][8][9][10] However, aggregation and precipitation of the nanoparticles often limited their application. 11 To fabricate multifunctional magnetic nanoparticles with good dispersity, Lee group 12 reported that TEOS was applied to protect the nanocrystals against agglomeration between the Fe 3 O 4 nanoparticles. Subsequently 3-aminopropyltriethoxysilane (APTES) was used as a silane coupling agent to modify the surface of the Fe 3 O 4 @SiO 2 microspheres, and leave the terminal-NH 2 groups for nano-Au immobilization.…”

“…The Colloidal stability of the nanoparticles often limited their application. 11 The Fe 3 O 4 @Ag nanoeggs were dissolved in ethanol and distilled water, respectively. As shown in Figure 4(e, f), both of the Fe 3 O 4 @Ag nanoeggs possess high monodispersity.…”