"Spatial arranged ZnO nanowires: developing technologies for future applications" |
| TYPE | Special Seminar - Solid State Institute, Technion |
| Speaker: | Professor Margit Zacharias |
| Affiliation: | Faculty of Engineering, IMTEK, Albert Ludwigs University Freiburg, Germany |
| Date: | 12.11.2014 |
| Time: | 12:30 |
| Location: | Solid State Auditorium(Entrance) |
| Remark: | Host: Professor Dan Ritter |
| Abstract: | Abstract Semiconductor nanowire devices have several properties which match future requirements of scaling down the size of electronics. In typical microelectronics production, a number of microstructures are aligned precisely on top of each other during the fabrication process. In the case of nanowires, this mandatory condition is still hard to achieve. A technological breakthrough is needed to accurately place nanowires at any specific position and then form devices in mass production. In this talk I will give an overview about nano-templating methods used for positioning nanowires [1]. A new up -scalable process combining conventional micromachining with phase shift lithography will be demonstrated as a suitable tool for nanowire device technology [2]. Vertical Si and ZnO nanowires are demonstrated on very large (several 2cm) areas. We demonstrate how the nanowire positions can be controlled, and the resulting nanowires are used for device fabrication. In addition, simple ways for ZnO based nanowire sensors will be demonstrated and discussed [3]. Core-shell nanowires will be shown and the influence of the Kirkendall effect for the preparation of hollow nanotubes will be discussed [4]. [1] H.J. Fan, P. Werner, M. Zacharias, Small 2 (2006) 700. [2] K. Subannajui, F. Güder, M. Zacharias, Nano Letters (2011) 11 (2011) 3513. [3] A. Menzel, K. Subannajui, F. Moser. O. Paul. M. Zacharias, Adv. Funct. Materials 21 (2011) 4342. [4] H.J. Fan, M. Knez, R. Scholz, D. Hesse, K. Nielsch, M. Zacharias, U. Gösele, Nano |