nanoparticles – Page 36 – TechConnect Briefs

Water-Soluble, Carboxyl-Modified Silicon Nanoparticles

Lee S., Cho W-J, Korea Institute of Science and Technology, KR

Since silicon has both the well-known chemistry and the industrial benefits of non-toxic and low cost, an interest in Si nanoparticles has rapidly increased. We will discuss a practical surface modification of Si nanoparticles prepared [...]

Formation of Polymer Nano-particles in Supercritical Fluid Jets

Gokhale A.A., Khusid B., Dave R.N., Pfeffer R., New Jersey Institute of Technology, US

The supercritical antisolvent process is an emerging technology for the production of micro- and nanometer-sized particles for a wide variety of bio-medical pharmaceutical applications. In this method, an organic liquid solution of the compound of [...]

Protein Nanoparticles

Castor T.P., Aphios Corporation, US

Protein nanoparticles can be utilized for the pulmonary delivery of protein therapeutics or can be incorporated into biodegradable polymer microspheres/nanospheres for controlled release depot or oral delivery. With proteinaceous therapeutics, the generation of nanoparticles is [...]

TMAZ Nanoparticles as Potential Drugs Influencing the Cellular Signal Transduction Pathways

Ivkovic S., Baranek T., Bendzko P., Schulz J., Klinomed Institut für Angewandte Nanotechnologie und Nanomedizin GmbH, DE

Currently, various antioxidants are under clinical investigation as an adjunct to standard and experimental cancer therapies. Anti-cancer activity of antioxidants may not only be attributed to their radical scavenger properties, but also to direct modulation [...]

The Use of Ligand Conjugated Superparamagnetic Iron Oxide Nanoparticles (SPION) for Early Detection of Metastases

Leuschner C., Kumar C., Urbina M.O., Zhou J., Soboyejo W., Hansel W., Hormes F., Pennington Biomedical Research Center, US

Breast cancer is the most common cause of cancer death in women; more than 75 % of patients die from skeletal metastases. The accurate diagnosis of metastatic disease is therefore crucial for treatment and survival. [...]

Desorption of Surfactant and Sintering of Surface Modified PdxNi1-x Nanoparticles

Wang K-W, Chung S-R, Hung W-H, Perng T.P., National Tsing Hua University, TW

A series of PdxNi1-x nanoparticles in a diameter of 10 nm were prepared by wet chemical reduction. The surface was modified with 1 wt% stearic acid (SA) or polyethylene glycol (PEG). Desorption of the surfactant [...]

Finite-Size Effects and Surface-Enhanced Raman Scattering from Molecules Adsorbed on Noble-Metal Nanoparticles

Pustovit V.N., Walker K.M., Shahbazyan T.V., Jackson State University, US

We study theoretically the role of strong electron confinement on surface-enhanced Raman scattering (SERS) from molecules adsorbed on metal nanoparticles. We describe a novel enhancement mechanism, relevant for nanometer-sized noble-metal particles, which originates from different [...]

Controlling the Photoactivity of Nanoparticles

Casey P., Boskovic S., Lawrence K., Turney T., CSIRO(CMIT), AU

The relative photoactivity of a series of nanophase ZnO powders with varying crystallite size (20-140nm) was determined using a chemical method based on the photobleaching behaviour of the stable radical 1,1-diphenyl-2-picrylhydrazyl (DPPH). It was confirmed [...]

Nanoparticle Composites for Coating Applications

Cayton R.H., Nanophase Technologies Corporation, US

Nanoparticles can be incorporated into polymeric coatings to enable significant improvement in targeted properties, i.e., scratch resistance, UV resistance, conductivity, etc. Commercial processing methods have been developed to surface treat nanoparticles to render compatibility between [...]

Optical Absorption Modeling of Arbitrary Shaped Nanoparticles

Mullin P., Kozlowski G., Kozlowski P.G., Kozlowski G., Kozlowski P.G., Busbee J.D., Jones J.G., Wright State University, US

A method for modeling the optical absorption spectra of nanosize metal particles is demonstrated. Computer software has been developed to generate the absorption spectra from the particles geometry and material properties. The software breaks the [...]