superparamagnetic – TechConnect Briefs

Superparamagnetic relaxometry (SPMR) for sensitive detection of Her-2 positive tumors in mice

Paciotti G., Minser K.E., Weldon C.L., Gomez A., Karaulanov T., Hathaway H.J., Anderson W.H., Nettles C., Huber D.L., Vreeland E.C., Imagion Biosystems Inc., US

Superparamagnetic Relaxometry (SPMR) is a non-invasive technique that utilizes superconducting quantum interference device (SQUID) detectors to localize and quantify the magnetization of superparamagnetic iron oxide (Fe3O4) nanoparticles (NPs) specifically bound to cancerous tumors. In an [...]

Optimization of synthesis conditions to prepare desired shell thickness of superparamagnetic MgFe2O4@SiO2 core-shell nanosphere for biomedical applications

Das H., Debnath N., Arai T., Sakamoto N., Shinozaki K., Suzuki H., Wakiya N., Shizuoka University, JP

We have described here a simple way for the fabrication of superparamagnetic MgFe2O4@SiO2 core-shell spherical nanoparticles with controlled shell thickness. First, core MgFe2O4 dense nano-spheres were directly synthesized by ultrasonic spray pyrolysis (USP) technique from [...]

Single Crystalline Micrometric Iron Oxide Particles with Superparamagnetic Behaviour for MRI Applications

Kiss M.L., Chirita M., Beljung C.A., Polanek R., Savii C., Ieta A., Ionut Mihaila Chirita A., State University of New York at Oswego, US

A major drawback of using metal oxide nanoparticles as contrast agent in MRI is related to their low saturation magnetization mainly due to their particle size. The current works seeks to solve this problem by [...]

Synthesis of Micrometric Single Crystalline Magnetite with Superparamagnetic Properties for Biomedical Applications

Chirita M., Kiss M.L., Ieta A., Grozescu I., State University of New York at Oswego, US

There are no reports on the synthesis of single crystalline micrometric magnetite with superparamagnetic behavior. The literature mainly refers to micrometric particles obtained by nanoparticle agglomeration. The major disadvantage of magnetic microparticles composed of clusters [...]

Composition and magnetic properties of zinc ferrite nanoparticles prepared by co-precipitation method at different temperatures

Reisi Shahraki R., Seyyed Ebrahimi S.A., Ebrahimi M., University of Tehran, IR

In this work, single phase zinc ferrite nanoparticles have been prepared by coprecipitation method at 40, 60 and 80 °C without any subsequent calcination and the effect of the reaction temperature on the composition, structural [...]

Synthesis, Characterization and Toxic Metal-Binding Ability of Poly(γ-glutamic acid)-coated Superparamagnetic Nanoparticles

Chen B.H., Inbaraj B.S., Fu Jen University, TW

Superparamagnetic iron oxide nanoparticles (SPIONPs) coated with a non-toxic, edible biopolymer poly(-glutamic acid) (PGA-coated SPIONs) were synthesized by co-precipitation method, characterized and evaluated for their possible toxic metal-binding ability in the treatment of metal intoxication [...]

Synthesis, Characterization and Antibacterial Activity of Glycol Chitosan Modified Superparamagnetic Nanoparticles

Chen B.H., Inbaraj B.S., Fu Jen University, TW

Superparamagnetic iron oxide nanoparticles (IONPs) are particularly attractive as antibacterial agents owing to their precise bacterial biofilm and cell targeting in vivo achieved by magnetic driving. In this work, superparamagnetic IONPs modified with water-soluble glycol [...]

Synthesis and Characterization of Superparamagnetic Nanoparticles Coated with Carboxymethylated Cassava Starch for Drug Delivery System

Kasemwong K., Nanta P., Skolpap W., Ruktanonchai U.R., Nano Delivery System Laboratory, National Nanotechnology Center, TH

Magnetic nanoparticles (MNPs) are increasingly being considered for a number of biomedical applications due to their inherent ultra fine size, biocompatibility and superparamagnetic properties. The functional properties of the MNPs can be tailored for specific [...]

A facile low-temperature route for preparing monodisperse Mn3O4 nanopolyhedrons from amorphous MnO2 nanoparticles

Ma J., Zhang S., Liu W., Zhao Y., University of Shanghai for Sci& Tech., CN

In the paper, we firstly show a facile hydrothermal route for synthesizing monodisperse Mn3O4 nanopolyhedrons directly used new-made amorphous MnO2 nanoparticle with its mother solution as precursors. The hydrothermal process was performed at 160 ºC [...]

Microwave-assisted superparamagnetic FePt synthesis for MRI application

Tsai J.L., Tsai M.J., Tsai T.Y., Tsai J.L., Tsai M.J., Tsai T.Y., Tsai J.L., Tsai M.J., Tsai T.Y., Lai P.S., National Chung Hsing University, TW

uperparamagnetic iron oxide (SPIO) nanoparticles have demonstrated their practicability as MRI T2-shortening agents for non-invasive cell labeling, drug delivery or tumor detections in clinical practice. Recently, superparamagnetic chemically disordered face-centered cubic (fcc) FePt nanoparticles has [...]