Bertran E. – TechConnect Briefs

Magnetic Properties Of Iron-Filled Multiwalled Carbon Nanotubes

Aguiló-Aguayo N., García-Céspedes J., Pascual E., Bertran E., IN2UB, Universitat de Barcelona, ES

Magnetic properties of iron-filled multiwalled carbon nanotubes have been investigated. Hysteretic and temperature dependent magnetic responses reveal a superparamagnetic behaviour at temperatures below 150ºC. The saturation magnetization of the nanowires at 5K is found to [...]

Optical properties of 2D nanoparticle arrays

Portal S., Vallvé M.A., Arteaga O., Ignes-Mullol J., Bertran E., FEMAN group, ES

The self-assembly of nanometric size particles in large area compact monolayers has recently attracted considerable interest in terms of the fabrication of new optical nanostructured devices of macroscopic dimensions. These nanometric arranged surfaces present a [...]

Fluorination effects on tribological characteristics of hydrogenated amorphous carbon thin films

Rubio-Roy M., Portal S., Polo M.C., Pascual E., Bertran E., Andújar J.L., Universitat de Barcelona, ES

Hydrogenated amorphous carbon (a C:H) films are good candidates for biomedical applications, requiring smooth surfaces, biocompatibility and singular tribological characteristics. The addition of elements to a C:H films, such as oxygen, silicon, fluorine or metals, [...]

Simultaneous Tip and Base Growth of Carbon Nanotubes Produced by RF Plasma Enhanced CVD

García-Céspedes J., Pascual E., Bertran E., IN2UB, Universitat de Barcelona, ES

In this work, carbon nanotubes (CNTs) with curly and straight segments were synthesized by means of radio-frequency plasma enhanced chemical vapour deposition (rf-PECVD) onto silicon substrates, using Fe as the catalyst material. The origin of [...]