Reactive bimetallic Al/Ni nanostructures for nanoscale heating applications fabricated using a porous alumina template
Ημερομηνία
2009Συγγραφέας
Kokonou, M.Giannakopoulos, K. P.
Gunduz, I. E.
Fadenberger, K.
Rebholz, Claus
Doumanidis, C. C.
Source
Microelectronic EngineeringVolume
86Pages
836-839Google Scholar check
Metadata
Εμφάνιση πλήρους εγγραφήςΕπιτομή
Porous alumina templates are attracting increasing attention for the growth of nanowires and nanodots. We demonstrate here the fabrication of reactive bimetallic nanoporous Al/Ni films and Al/Ni nanorods by electron gun evaporation on a very thin porous alumina template, with vertical cylindrical pores 160nm in height and 60nm in diameter. Al and Ni were deposited consecutively on the template and a bimetallic Al/Ni nanorod 60nm in height and in diameter was formed in each pore, while a porous bimetallic Al/Ni capping layer was produced on top of the porous alumina template. The porous reactive bimetallic capping layer was ignited using a spark and a crater was formed around each ignition point with microspheres of the nickel aluminides products. The obtained results offer a first insight into the development of reactive nanorods and porous thin films capable of providing a thermally actuated valving mechanism for flows into and/or out of anodized aluminium oxide membranes and nanotubes, e.g. for targeted drug delivery.