nanoparticle – Page 22 – TechConnect Briefs

Nanocrystalline Mixed Metal Oxides Novel Oxygen Storage Materials

Sarkas H., Murray P.G., Fay A., Brotzman Jr. R.W., Nanophase Technologies Corporation, US

Nanophase Technologies Corporation employs a new physical vapor synthesis technique to manufacture ceria-based mixed rare earth oxide nanomaterials. The mixed rare earth oxide nanoparticles are dense, discrete crystals. The compositions are solid solutions that remain [...]

Nanoparticle Dispersions for Polishing Applications

Murray P.G., Nanophase Technologies Corporation, US

Increasingly, improvements in surface roughness and planarity are being sought in a variety of technologically advanced polishing applications related to the electronics industry. From the production of photomask blanks to the fabrication of microelectronic memory [...]

A Modeling Tool for Contact Probe Tests on Nano-Particle Filled Materials

Tseng K.K., Vanderbilt University, US

With the recent advances in nano-scale science and engineering, materials containing reinforcement with superior mechanical properties can be found in many advanced products. The accurate prediction of the mechanical properties of this class of composite [...]

A Novel Synthesis of Co@Au Nanoparticles and Characterization

Ban Z., O'Connor C.J., University of New Orleans, US

A homogeneous non-aqueous solution reactions method has been developed to prepare gold-coated cobalt (Co@Au) nanoparticles. After the sample was washed with 8% HCl, TGA, XRD, TEM, and magnetic measurements SQUID are utilized to characterize the [...]

Self Assembly of Globular Protein Nanoparticles

Shiryayev A., Gunton J.D., Lehigh University, US

A continuum model of the self-assembly of globular protein nanoparticles proposed by Talanquer and Oxtoby (J. Chem. Phys. 109, 223 (1998)) is investigated numerically, with particular emphasis on the region near the metastable fluid-fluid coexistence [...]

Crystallization of Membrane Protein Nanoparticles

Shiryayev A., Holby E.F., Gunton J.D., Lehigh University, US

The self-assembly of membrane proteins from solution into two-dimensional crystals is studied numerically using a continuum model proposed by Talanquer and Oxtoby (J. Chem. Phys. 109, 223 (1998)). Although the mean ¯eld theory presented here [...]

pH Dependent Optical Properties of Surface Modified Gold Nanoparticles Using a Bovine Serum Albumin Coating

Xu Y., Linares K.A., Meehan K., Love B.J., Love N.G., Love B.J., Love N.G., Virginia Polytechnic Institute and State University, US

Use of gold nanoparticles has significant potential in biosensors. Gold’s surface plasmon resonance (SPR) is influenced by the refractive index of the surrounding environment. Changes in the SPR signal can be correlated to changes in [...]

Compositional Inhomogeneity of Pd70Ag30 Alloy Nanoparticles

Wang K-W, Chung S-R, Jang L-Y, Lee J-F, Perng T.P., National Tsing Hua University, TW

The compositional inhomogeneity of Pd70Ag30 nanoparticles with the size of 6-7nm was studied by X-ray absorption near edge structure (XANES). The composition of the as-prepared nanoparticles by chemical reduction is inhomogeneous across the diameter due [...]

Photoluminescence and Photoluminescence Excitation Measurements of Eu-Doped Nano-Si/SiO2 Thin Films

Nery G.A., Fonseca L.F., Liu H., Resto O., Weisz S.Z., University of Puerto Rico at Rio Piedras, PR

Europium (Eu) ions are already used in significant visual technological applications. We attempted to determine if a silicon nanoparticle (nano-Si) / Europium interaction could occur. The energy transfer from nano-Si to rare earth ions has [...]