nanoparticle – Page 12 – TechConnect Briefs

Characterizing Nanoparticle Emissions from Burning Polymer Nanocomposites

Nyden M.R., Harris R.H., Kim Y-S, Davis R.D., Marsh N.D., Zammarano M., National Institute of Standards and Technology, US

At Nanotech 2009, we presented evidence that CNFs used as fire retardants in polyurethane foam (PUF), were destroyed in the flames and, therefore, were not released when CNF containing foams are burned under well-ventilated conditions. [...]

Self Assembly of Colloidal Gold Nanoparticles on Diblock Copolymer Thin Film Templates

Adams S.M., Ragan R., University of California Irvine, US

Self-assembly of metallic nanoparticles were investigated for the development of field-enhanced chemical and biological detection devices with the capacity to achieve single-molecule level detection resulting from surface enhanced Raman scattering, associated with closely spaced noble [...]

Preparation and Characterization of BiFeO3 Nanosystems as Visible Light Driven Photo-degradation of Organic Compounds

Hengky C., Dunn S., Singh V., Loh L., Nanyang Polytechnic, SG

The use of renewable or low energy sources for the degradation of organic pollutants has generated broad interest in both scientific research and potential applications in recent years. Research on semiconductor photocatalysis came sharply into [...]

Preparation and Application of Copper Oxide Nanoparticles

Chang M-H, Tai C.Y-D, National Taiwan University, TW

The aim of this research was to synthesize copper oxide (CuO) nanoparticles, which were further applied to prepare CuO-water nanofluid, using a spinning disk reactor (SDR). The precursor of copper oxide was first synthesized by [...]

Early Stages of Particle Formation by in-situ UV-Vis and HRS

Schürer B., Segets D., Peukert W., University of Erlangen-Nuremberg, DE

We present a new approach for the study of early states of particle formation that can be applied also for precipitation processes that occur on a millisecond timescale. A T-shaped micro-mixer is used to precipitate [...]

The Use of Taguchi Method to Determine Factors Affecting the size of fine attapulgite particles generated by rapid expansion supercritical solution with and without cosolvents

Asghari I., Esmaeilzadeh F., Shiraz University, IR

The presence of fine particles tends to increase viscosity. Besides the solid load particle properties, especially the specific surface area, have a pronounced impact on the suspension’s viscosity. Attapulgite is used as a viscosifier in [...]

Nano Silver – Why It is so Hot Now?

Lem K.W., Haw J.R., Lee D.S., Brumlik C., Sund S., Curran S., Smith P., Brauer S., Schmidt D., Konkuk University, KR

It has been known for centuries that silver has an antiseptic effect. In ancient times, many Greeks used silver vessels for drinking water storage. Koreans have also chosen silver to make their metal chopsticks. Recently, [...]

The Mechanochemical Formation of Functionalized Semiconductor Nanoparticles for Electronic and Superhydrophobic Surface Applications

Mitchell B.S., Fink M.J., Tulane University, US

A rapid, direct and efficient method for the fabrication of functionalized semiconductor nanoparticles is described. The mechanochemical method involves the simultaneous top-down formation of nanoparticles using high energy ball milling (HEBM) and reaction with a [...]

Dynamics of intermediate to late stage concentration fluctuations during free diffusion experiments

Oprisan A., Oprisan S.A., Oprisan A., Oprisan S.A., Teklu A., College of Charleston, US

Two experiments were performed using shadowgraph visualization technique in order to study the dynamics of concentration fluctuations. Our experimental setup includes an objective attached to the CCD camera to increase the field of view. Using [...]

Size and Count of Nanoparticles by Scattering and Fluorescence Nanoparticle Tracking Analysis (NTA)

Griffiths D., Hole P., Smith J., Malloy A., Carr B., NanoSight, US

A novel addition to a technique for the analysis of nanoparticles in a suspension is described. The Nanoparticle Tracking Analysis (NTA) technique sizes individual nanoparticles, based on their Brownian motion. Unlike classical light scattering techniques, [...]