Magnetic nano-particles

Potential use of complexes of y - CD with organic compounds, including polymers, was also reviewed by Szejtli [6, 12, 13], y - CD are able to incorporate metal ions as ligands to prepare magnetic nano - particles [7,14], Harada and Ka-machi [8,15] first found that poly (ethylene oxide) (PEO) thread a- CD rings to form polymer - cyclodextrin complex. Since their finding of inclusion complex formation of polymer chains with a- CD, a large number of studies on inclusion complexes of... 

An immunological method has been developed based on AFBj antibody-functionalised composite magnetic nano particles based on FejO SiO. For this purpose anti-AFBj is immobilized covalently on the surface of the nucleus. Te selectivity, reproducibility and stability of the immunological system are within the allowable error. Compared to the conventional ELISA the proposed immunosystem is simple and rapid (Li Wang and Xian-Xue Gan 2009). 

Preparation of core-shell type magnetic particles comprises two steps. First, a magnetic core has to be prepared the core can be either magnetic nano-particle... 

Magnetic nano particles have been nsed as the vehicle to trap automated diagnostic process... 

Properties of FeCr,o solid samples have been studied by X-ray diffraction, 57Fe Mossbauer spectroscopy and magnetic measurements to stimulate the interaction of Fe with fullerene. FeCr,o samples have been prepared by decomposition of the 1,3-dipolar cycloadduct of the fullerene and ferrocene nitrile oxide. The components exhibit super paramagnetic properties originating from an interaction between FeCr,o complexes within the nano-particles. Each nano-particle consists of hundreds to thousands complexes (546). 

Zeng H, Li J, Liu JP, Wang ZL, Sun S. Exchange-coupled nanocomposite magnets by nano-particle self-assembly. Nature 2002 420 395-398. 

Nano-sized magnetic ferrite particles are the subject of intensive research because their physical properties are quite different from those of the bulk material. The magnetic characteristics of particles used for recording media crucially depend on their sizes and shapes. So, the material used for high-quality recording media should be ultrafme, chemically homogeneous, and stable, with a narrow particle size distribution a predetermined shape. These requirements demand a reliable and reproducible preparation technique. 

Barbara B, Sampaio LC, Marchand A, Kubo O, Takeuchi H (1994) Two-variables scaling of the magnetic viscosity in Ba-ferrite nano-particles. J Magnet Magnetic Mater 136 183-188 Barra A-L, Debrunner P, Gatteschi D, Schulz ChE, Sessoh R (1996) Superparamagnetic-like behavior in an octanuclear iron cluster. EuroPhys Lett 35 133-138... 

Thermal Hysteresis Due to the Structural Phase Transitions in Magnetization for Core-Surface Nano particles 113... 

Nano particles are an attractive target due to their unique characteristics. Especially the magnetic nano particals are of interest not only because of their properties, but also because of their potential application in many fields as density particles, magnetic fluids and biomedical material for highly sensitive immune analyses (Osaka et al. 2006b). 

D. Horak, M. Babic, H. Mackova, and M.J. Benes Preparation and properties of magnetic nano- and microsized particles for biological and environmental separations. Journal of Separation Science 30, 1751-1772 (2007). 

Gu HW et al (2004) Facile one-pot synthesis of bifunctional heterodimers of nano particles a conjugate of quantum dot and magnetic nanoparticles. J Am Chem Soc 126(18) 5664-5665... 

Compared with coarse-grained materials, nano-particles can possess unique electronic, magnetic and optical properties. The main principle of producing nano-particles with microemulsions consists in mixing two types of microemulsions, i.e. o/w and w/o microemulsions. In this way, for example, ultra-fine particles are obtained, whose core and external shells consist of Fe salts, and in the intermediate layer copper is contained. To produce microemulsions, anionic surfactants such as Aerosol OT (AOT) are used, one mole of which can solubilise up to 8 moles of the aqueous phase. 

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