Papers – Page 7 – TechConnect Briefs

Assisted Alignement of Carbon Nanotubes

Haik Y., Chatterjee J., Chen C-J., Bimagnetic Engineering Lab, US

Extensive research has been focused on the processing of carbon nanotubes polymeric composites. The ability to impose a preferred alignment of carbon nanotubes in a composite will increase the effectiveness of utilizing nanotubes in composite [...]

Synthesis of Spinel Ferrite Particle/Organic Hybrid from Metal-Organics

Yogo T., Nakamura S., Sakamoto W., Nagoya University, JP

Spinel particle/organic hybrids were succsessfully synthesized from metal-organics below 100oC. Chlated iron- (iron allylacetylacetonate) and nickel-organics were used as starting materials. Two nickel-metal organics (nickel acetylacetonate (NA) and nickel diammine propenylacetylacetonate (NPA)) were investigated. The [...]

On the Development of a Nanocrystalline Yttria Stabilised Zirconia Ceramic Capable of Superplastic Deformation at Relatively Low Temperatures

Bhattacharya S.S., Betz U., Hahn H., IIT Madras, IN

Superplastic deformation behaviour is now well established in fine-grained zirconia ceramics at fairly high temperatures (well above 0.5Tm, where Tm is the absolute melting point). In this study, an attempt was made to develop a [...]

Corrosion Protection by Multifunctional Stratified Coatings

Westcott S.L., Kotov N.A., Ostrander J.W., Mamedov A.A., Reust D.K., Roark J.P., Nomadics, Inc., US

We have demonstrated a hybrid coating consisting of both a stratified layer that incorporates corrosion inhibiting ions and a silicate barrier layer. The stratified layer is applied to the aluminum alloy using the layer-by-layer assembly [...]

Thermal and Morphological Study of a New Type of Nanocomposites: Functionalized PP / PA / Clay Nanocomposites

Oyama H.T., Oono Y., Nakayama K., National Institute of Advanced Industrial Science and Technology (AIST), JP

In the present work we explore a new type of nanocom- posite, in which clay is distributed in a multi-phase polymer system. Our nanocomposites consist of an immiscible polymer pair, polypropylene grafted with maleic anhydride [...]

Carbon Nanotube- and Nanofibre-reinforced Polymer Fibres

Shaffer M.S.P., Sandler J.K.W., Pegel S., Windle A.H., Gojny F., Schulte K., Cadek M., Blau W.J., Lohmar J., van Es M., Imperial College, UK

A range of multi-wall carbon nanotubes and carbon nanofibres were mixed with a polyamide-12 matrix using a twin-screw microextruder, and the resulting blends used to produce a series of reinforced polymer fibres. The aim was [...]

Characterization of a Novel Self-Association of an Alternating Copolymer into Nanotubes in Solution

Malardier-Jugroot C., van de Ven T.G.M., Whitehead M.A., McGill University, CA

The characterisation of the association of an alternating copolymer was performed using theoretical methods (quantum mechanics and molecular mechanics) and experimental methods (cryo-Transmission Electron Microscopy, Neutron Reflectivity and Neutron Scattering). The most stable conformation obtained [...]

Nanostructure of a High-Permeability, Hydrogen-Selective Inorganic Membrane

Oyama S.T., Lee D., Hacarlioglu P., Gu Y., Saraf R.F., Virginia Tech, US

This paper describes the preparation and properties of an inorganic membrane with permeability for H2 comparable to palladium and with over 99.9% selectivity over larger species like CO, CO2 and CH4. The membrane is a [...]

Synthesis and Characterization of Novel High-Temperature Stable Nanocomposite Catalysts

Kirchhoff M., Specht U., Veser G., University of Pittsburgh, US

Unusually active and sinter-resistant nanocomposite materials were synthesized by combining the high reactivity of nanosized noble metal particles with the excellent hightemperature stability of hexa-aluminates through a simple one-step microemulsion-templated sol-gel synthesis. The novel nanocomposite [...]

Nanotube Stochastic Resonance: Noise–enhanced Detection of Subthreshold Signals

Lee I.Y., Liu X., Kosko B., Zhou C., University of Southern California, US

Noise can help signal detection at the nano-level. Experiments on a single-walled carbon nanotube transistor confirm that a threshold is sufficient for a nondynamical system to exhibit stochastic resonance: a judicious amount of noise can [...]