Highly-efficient growth of cobalt nanostructures using focused ion beam induced deposition under cryogenic conditions: application to electrical contacts on graphene, magnetism and hard masking.

Emergent technologies are required in the field of nanoelectronics for improved contacts and interconnects at nano and micro-scale. In this work, we report a highly-efficient nanolithography process for the growth...

Biomass-derived wearable energy storage systems based on poplar tree-cotton fibers coupled with binary nickel–cobalt nanostructures

We demonstrated symmetric and asymmetric supercapacitors (SSCs and ASCs) based on core/shell-like Ni–Co oxide@cotton//Fe2O3–carbon nanotubes@cotton that are capable of storing a remarkable amount of energy, while retaining a high power density and long cycle life.

Synthesis and Structural Characterization of Cobalt Nanostructures in AAO Membranes

Metallic nanostructures have attracted the interest of researchers due to their fundamental importance and potential applications in nanodevices, sensors and catalysts. Co-AAO nanocomposites were obtained by using a sol-gel method that uses ultrasonic vibrations to induce the penetration of a colloidal solution through the pores of an anodized aluminum oxide (AAO) template. The AAO template, with the sol into its pores, was annealed at 648 K. The entire dip-anneal-dip�process was repeated three times. Finally, the metal nanostructures were formed by further annealing at 873 K in hydrogen atmosphere for 1 h. The morphology and structure of Co-AAO were investigated by using SEM, HRTEM, XRD and EPR methods.