Highly disordered multiwalled carbon nanotubes of large outer diameter ( 60 nm) fabricated by means of chemical vapor deposition process inside porous alumina templates exhibit ferromagnetism when annealed in a H2/Ar atmosphere. In the presence of an applied magnetic field, there is a transition from positive to negative magnetoresistance. The transition may be explained in terms of the Bright ...

1D material systems such as Ag–Ni, Ag–Co, Ag–Fe nanowires or nanotubes have tremendous potential for making devices that require the coexistence of electrically conducting and magnetic phases interfaces. The realization microstructures is very challenging essentially due to their high positive mixing enthalpies which makes it difficult achieve unique non-equilibrium microstructures. In present ...

The handling, dispersion, manipulation, and functionalization of carbon nanotubes and nanopipes often require the use of solvents. Therefore, a good understanding of the wetting properties of the carbon nanotubes is needed. Such knowledge is also essential for the design of nanotube-based nanofluidic devices, which hold the promise of revolutionizing chemical analysis, separation, drug delivery...

The microarray format has allowed for rapid and sensitive detection of thousands of analyte DNAs in a single sample, and there is considerable interest in extending this technology to protein biosensing. While glass is the most common substrate for microarrays, its binding capacity is limited because the glass surface is flat. One way to overcome this limitation is to develop arrays based on po...