| AVS 60th International Symposium and Exhibition | |
| Nanometer-scale Science and Technology | Monday Sessions |
| Session NS+AS+EM-MoA |
| Session: | Nanowires and Nanotubes |
| Presenter: | R. Snyders, Univ. of Mons, Belgium |
| Authors: | A. El Mel, Univ. of Mons, Belgium M. Buffière, IMEC, KU Leuven, Belgium P.-Y. Tessier, Inst. des Matériaux Jean Rouxel – Univ. de Nantes, Belgium K. Du, Stevens Inst. of Technology C.H. Choi, Stevens Inst. of Technology L. Molina-Luna, Technische Univ. Darmstadt, Germany S. Schildt, Technische Univ. Darmstadt, Germany H.J. Kleebe, Technische Univ. Darmstadt, Germany S. Konstantinidis, Univ. of Mons, Belgium C. Bittencourt, Univ. of Mons, Belgium R. Snyders, Univ. of Mons, Belgium |
| Correspondent: | Click to Email |
Huge efforts are nowadays dedicated to the development of relevant methods to fabricate hollow nanostructures of a wide variety of materials. Among hollow nanostructures, oxide nanotubes appear to be an interesting building block for nanoelectronics. Until today, the oxide nanotubes suffer of their short length and poor organization. In this contribution, we report on highly organized ultra-long metal oxide nanotube arrays (length-up to several centimeters) fabricated by thermal oxidation of metal nanowire arrays. The metal nanowires were grown on nano-grated surface by the plasma-assisted inverse-template method that we have developed recently. Based on the extensive structural study, performed by transmission electron microscopy, the fundamental mechanisms occurring during the formation of such oxide nanotubes will be discussed and explained according to the nanoscale Kirkendall effect. We further show that such method can be extended to the fabrication of periodic zero-dimensional hollow nano-objects.
In addition, we present an extensively structural study of the morphological transformation of oxide nanotubes upon in situ annealing in a transmission electron microscope. Based on this, the role of oxygen on the fundamental mechanisms occurring during the formation of such oxide nanotubes will be discussed. These results show the structural transformation and copper ions diffusion inside an oxide nanotube due to the effect of heating.