Materials that can perform simultaneous functions allow for reductions in the total system mass and volume. Developing technologies to produce flexible batteries with good performance in combination with high specific strength is strongly desired for weight- and power-sensitive applications such as unmanned or aerospace vehicles, high-performance ground vehicles, robotics, and smart textiles. S...

Multi-walled carbon nanotubes were synthesized on a Ni/Au/Ti substrate using a thermal chemical vapor deposition process. A Ni layer was used as a catalyst, and an Au layer was applied as a barrier in order to prevent diffusion between Ni and Ti within the substrate during the growth of carbon nanotubes. The results showed that vertically aligned multi-walled carbon nanotubes could be uniformly...

Titania nanotubes loaded with antibiotics can deliver a high concentration of antibiotics locally at a specific site, thereby providing a promising strategy to prevent implant-associated infections. In this study we have fabricated titania nanotubes with various diameters (80, 120, 160, and 200 nm) and 200 nm length via electrochemical anodization. These nanotubes were loaded with 2 mg of genta...

Impurity scattering properties for optical excitations in boron-nitride (BN) heteropolar nanotubes are investigated theoretically. We extend the continuum k · p model of the carbon nanotubes to that of the BN systems, where site energies are introduced at the boron and nitrogen atoms in order to take account of the strong ionic properties of the BN bonds. We show that the backward scattering co...

We report the low-temperature growth of vertically aligned carbon nanotubes (CNTs) at high growth rates by a photo-thermal chemical vapour deposition (PTCVD) technique using a Ti/Fe bilayer film as the catalyst. The bulk growth temperature of the substrate is as low as 370 °C and the growth rate is up to 1.3 µm min(-1), at least eight times faster than the values reported by traditional thermal...

Multiwalled boron nitride nanotubes (BNNTs) were compressed at room temperature in diamond anvil cells up to 35 GPa, followed by decompression. For the first time, in situ infrared absorption spectroscopy was used to monitor BNNT structural transformations. These BNNTs were found to undergo pressure-induced transformations from a hexagonal to a more closely packed wurtzite structure at 11 GPa, ...

A review on the syntheses and electrical characterization of Y-shaped multi-walled carbon nanotube morphologies is presented. Modified thermal CVD processes, using Ti precursors, are used to grow Y-junctions of different geometries and distribution of catalyst particles. It has been established that novel electrical switching behavior is feasible, where any one of the three branches of the Y-ju...

Titania nanotube arrays (NTAs) on titanium (Ti) fabricated by electrochemical anodization have attracted tremendous interest for diverse applications, of which most perform in aqueous environment or related to interaction with water. The NTAs are widely studied however the related factor of stability of NTAs when applied in such environment has rarely been concerned. We report that the annealed...

Titanium dioxide (TiO 2 ) nanotubes array with the length of 16 μm and outer diameter 100 nm were synthesized by anodic oxidation titanium foil in an electrolyte solution containing a fluorine-containing ethylene glycol. The selected synthesis conditions make it possible to separate nanotubular from study as homogeneous functional material. performed scanning electron microscopy Brunauer--Emmet...

DANIEL BROSNAN: Comparison of Anatase Titania to Titanate Nanotubes in a Thin-Film Dye-Sensitized Solar Cell with Liquid and Solid Electrolyte (Under the direction of Professor Laurie McNeil) In this project, the properties of anatase titanium dioxide and titanate nanotubes were compared with respect to their function as a constituent material for the active layer of a dye-sensitized solar cell...