Molecularly-specific contrast can greatly enhance the biomedical utility of optical coherence tomography (OCT). We describe a contrast mechanism, magnetomotive OCT (MMOCT), where a modulated magnetic field induces motion of magnetic nanoparticles. The motion of the nanoparticles modifies the amplitude of the OCT interferogram. High specificity is achieved by subtracting the background fluctuati...

While many properties of the magnetic compass of migratory birds are satisfactory explained within the chemical model of magnetoreception, its extreme sensitivity to radio-frequency magnetic fields remains a mystery. Apparently, this difficulty could be overcome if the magnetoreceptor model were augmented with a magnetite nanoparticle, which would amplify the magnetic field at the position of t...

Abstract In recent years, the application of nanoadditives in biofuels is gaining much attention due to their increase thermophysical properties such as high surface area, thermal conductivity, and mass diffusivity. However, lack stability, additive cost, difficult recovery from engine exhaust are high-priority demanding characteristics, which may be chosen by many researchers. this regard, mos...

This paper provides an overview of how the surface properties of ferromagnetic nanoparticles dispersed in fluids is modified by natural and biocompatible polymers. Among common magnetic nanoparticles, magnetite (Fe3O4) and maghemite (g-Fe203) are popular candidates because of their biocompatibility. Natural polymeric coating materials are the most commonly used biocompatible magnetic nanopartic...

Chemically disordered B3–7-nm-diameter FePt nanoparticles are synthesized using the airless operation technique based on decomposition of iron pentacarbonyl and reduction of platinum acetylacetonate. The particle solution is then washed and subsequently deposited onto a thermally oxidized Si substrate. Nanoparticle assemblies are formed after solvent evaporation. The samples are heat-treated us...

An effect of activation with nanosized particles Fe 3 O 4 on structural and magnetic properties zinc-tellurite glasses 20·ZnO-(80-x)·TeO 2 -x·Fe (x=0, 1, 3, 7), prepared melt-quenching method, have been investigated. Some functional the were experimentally investigated X-ray diffraction, Energy dispersive Raman spectroscopies, SQUID magnetometry. The values average crystallite sizes calculated ...

The sonochemical coprecipitation reaction with moderate ultrasound irradiation in a low vacuum environment was used to obtain aqueous colloidal suspensions of iron oxide nanoparticles (IONPs). synthesized magnetite were conjugated directly by folic acid using electrohydraulic discharges as processing technique before modification the surface nanoparticles. Electrohydraulic applied two operation...

Superparamagnetic iron oxide nanoparticles are a potential candidate for novel research. The inter-particle interactions play significant role in determining the overall magnetic behavior of nanoparticle assembly, especially dipolar interaction. In this paper, we have synthesized practical sample and then applied an atomistic spin model simulation study with input parameters obtained from experi...

Background: Heavy metals, even at low concentrations, are harmful to human health and environment. Cadmium as a heavy metal is highly toxic and can cause serious threat to living organisms. This research was designed to evaluate the adsorption potential of modified magnetic iron nanoparticles by 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol ligand for the removal of cadmium ions from water solu...