We present evidence that in a very thin regime the magnetic layers become discrete islands and superparamagnetic in multilayered CoNi 1–17 nm /Cu 4.2 nm nanowires grown by pulsed electrodeposition using a hole pattern of anodized alumina templates. Magnetic hysteresis loops measured at room temperature using a vibrating sample magnetometer show that superparamagnetism appears at t CoNi 1.7 nm, ...

several mri contrast agents (cas) are used in medical diagnosis that gadolinium (gd3+) is the most widely used as contrast agents. unfortunately, its toxicity is due to its inefficiency. in this review, we discuss about the ability of spions in mri and application in multiple sclerosis diagnosis. superparamagnetic iron oxide nanoparticles (spions) such as magnetite nanoparticles are used as goo...

Dextran-coated superparamagnetic nanoparticles (MNPs) have widespread biomedical applications. The superparamagnetic behavior, specifically regulated size, and smooth morphology are crucial requirements for essentially all of these applications. Presented herein is an innovative double-coating strategy that would allow for a size-controlled synthesis of MNPs. Small monocrystalline iron oxide na...

Objective: To compare superparamagnetic iron oxide-enhanced magnetic resonance imaging with 5-phase computed tomography in the detection and characterisation of focal liver lesions. Patients and Methods: We prospectively performed 5-phase computed tomography scans followed by magnetic resonance imaging of the liver with superparamagnetic iron oxide magnetic resonance contrast medium in patients...

Compared with traditional drug solutions or suspensions, polymeric microparticles represent a valuable means to achieve controlled and prolonged drug delivery into joints, but still suffer from the drawback of limited retention duration in the articular cavity. In this study, our aim was to prepare and characterize magnetic biodegradable microparticles containing dexamethasone acetate (DXM) for...

In this study, we report the microfluidic-based synthesis of a multifunctional Janus hydrogel particle with anisotropic superparamagnetic properties and chemical composition for the bottom-up assembly of hydrogel superstructures. In a uniform magnetic field, the resulting Janus magnetic particles fabricated in the present method exhibit chainlike or meshlike superstructure forms, the complexity...

tion. Conversely, a semi-rigid, optimized acentric organization results in coherent second harmonic emission at the supramolecular level, the corresponding intensity from the dendrimer solution being almost proportional to Nmonomerábmonomerñ. The Nmonomer dependence assumes a linear additive model, whereby the individual sub-units follow an interaction-free oriented gas behavior. We have, there...

We report that hemozoin nanocrystals demonstrate superparamagnetic properties, with direct measurements of the synthetic hemozoin magnetization. The results show that the magnetic permeability constant varies from μ = 4585 (at -20 °C) to 3843 (+20 °C), with the values corresponding to a superparamagnetic system. Similar results were obtained from the analysis of the diffusion separation of natu...

Superparamagnetic iron oxide nanoparticles have been coated with a low affinity CXCR4 receptor antagonist to give high multivalent binding construct.