Biopolymer-protected CdSe nanoparticles.

A synthetic procedure for the encapsulation of cadmium selenide (CdSe) nanoparticles in a sago starch matrix is introduced. The nanocomposite was investigated using structural, spectroscopic, and thermal methods. TEM micrographs of the nanocomposite showed spherical CdSe particles of 4-5 nm in size coated with a biopolymer layer.

Preparation and biodistribution of radiolabeled fullerene C60 nanocrystals.

The present study describes for the first time a procedure for the radiolabeling of fullerene (C(60)) nanocrystals (nanoC(60)) with Na (125)I, as well as the biodistribution of radiolabeled nanoC(60) ((125)I-nanoC(60)). The solvent exchange method with tetrahydrofuran was used to make colloidal water suspensions of radiolabeled nanoC(60) particles. The radiolabeling procedure with the addition of Na (125)I to tetrahydrofuran during dissolution of C(60) gave a higher radiochemical yield of radiolabeled nanoC(60) particles in comparison to the second option, in which Na (125)I was added after C(60) was dissolved.

Synthesis and Characterization of Rutile TiO(2) Nanopowders Doped with Iron Ions.

Titanium dioxide nanopowders doped with different amounts of Fe ions were prepared by coprecipitation method. Obtained materials were characterized by structural (XRD), morphological (TEM and SEM), optical (UV/vis reflection and photoluminescence, and Raman), and analytical techniques (XPS and ICP-OES). XRD analysis revealed rutile crystalline phase for doped and undoped titanium dioxide obtained in the same manner.

Effects of the Ar ions pre-amorphization of Si substrate on interface mixing of Fe/Si bilayers.

Ion beam mixing of Fe/Si bilayers, induced by 100 keV (40)Ar ions at room temperature was investigated. Rutherford backscattering spectroscopy (RBS), atomic force microscopy (AFM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were applied for structural characterization. The main focus of this study was on the influence of the substrate structure on interface mixing.

Optical properties of shaped silver nanoparticles.

The influence of shape and dielectric property of surrounding media on surface plasmon absorption band of silver nanoparticles was studied. Spherical silver nanoparticles (d = 5.6 nm) synthesized in water using NaBH4 as a reducing agent are transferred in non-polar solvent (chloroform) with phase-transfer reagent oleylamine.