No abstract

This work investigated the effects of iodine on copper/functionalized carbon nanotubes (Cu/f-CNT) that were used in the coating of 1350 Aluminum Alloy wires, using the process of electrophoretic exposure with a solution of copper sulfate and iodine, under an electrical current of 1.2 A and a voltage of 10 V. The Al@Cu/f-CNT was characterized by Scanning Electron Microscopy in Secondary Electron mode, X-ray Diffraction and Raman spectroscopy, in addition to electrical measurements, at room temperature and under heating, via kelvin bridge. The results showed an increase of approximately 18% in the electrical conductivity of the IACS compared to the standard aluminum conductor, due to the iodine doping of the outer walls of the f-CNT, causing an expansion between the layers, and reflecting the increase in the conduction channels. This method of electrodeposition of Cu/f-CNT on the surface of metallic wires shows promise for the production of nanostructured cables with high ampacity, lightness and high performance, for application in power transmission lines.

Recent advances in the techniques of nanoantennas design and prototypes have led to create more efficient and reliable electronic devices. Otherwise, a commercial device has not been achieved yet. In this work we describe two possibilities of organic nanoantennas made of dendrimer and graphene. Our finds from the simulations are consistent with: (i) a rod antenna with similar characteristic as usual resistor coupled with field effect transistor device; (ii) high parasitic capacitance (from 0.36 F and 0.43 F) and operational frequency (tenths of THz); (iii) operational voltage around rectification (0.67 V and 0.82 V).

No abstract

No abstract