ABSTRACT
The intention of this chapter is to review and summarize the many approaches to fabricate aligned arrays of metal oxide nanowires (NWs), broadly separated into three classes (i) the growth of catalyst particles, seed particles, or NWs directly, utilizing a template (which is removed after filling); (ii) lithographic methods to fabricate arrays of either catalyst/seed particles or the NWs themselves directly; and (iii) post-synthetic methods of aligning freestanding NWs from powder or solution. Some examples of creative ways in which multiple approaches have been used in combination as well as future avenues for research will be discussed. Our focus in this review is primarily on the alignment of NWs, and for that reason, our descriptions of synthetic methods, properties, and applications of the resulting arrays will be limited.
