RT Conference Proceedings SR 00 A1 Martinez Rodrigo, Javier A1 Barbagini, Francesca A1 Bengoechea Encabo, Ana A1 Albert, Steven A1 Sánchez García, Miguel Angel A1 Calleja Pardo, Enrique T1 Fabrication of GaN nanorods by focused ion beam YR 2011 FD 19/09/2011 - 23/09/2011 AB Ordered arrays of III-Nitride nanocolumns are excellent candidates for the fabrication of nano-optoelectronic devices. Different technologies such as e-beam lithography or colloidal lithography, have been used to obtain ordered arrays. All these technologies have in common several processing steps that can affect the crystalline growth of the nanocolumns. In this work, we present a single lithographic step that permits to grow ordered GaN nanocolumns with different geometries. The patterning is based in the use of a focusedionbeam with different doses. With this method has been possible to create GaN nanopillars and nanocylinders T2 37th International Conference on Micro and Nano Engineering ED Berlín, Alemania AV Published LK http://oa.upm.es/12911/ UL http://www.mne2011.org/