Templated Solid-State Dewetting
Event details
| Date | 23.04.2012 |
| Hour | 13:15 |
| Speaker | Carl V Thompson, MIT |
| Location | |
| Category | Conferences - Seminars |
Solid films are usually metastable or unstable in the as-deposited state, and will dewet or agglomerate to form islands when heated to sufficiently high temperatures. This process is driven by surface energy minimization and generally occurs via surface diffusion at temperatures well below the melting temperature, especially when a film is very thin. Dewetting during processing of films used in micro- and nano-systems is often undesirable, so that means of avoiding dewetting are important in this context. However, dewetting can also be useful in making arrays of nano-scale particles for electronic and photonic devices and for catalyzing growth of nanotubes and nanowires. Templating of dewetting using patterned surface topography or pre-patterning of films can be used to create ordered arrays of particles and complex patterns of partially dewetted structures. Studies of dewetting can also provide fundamental new insight into the effects of surface-energy anisotropy and facets on shape evolution.
Practical information
- General public
- Free
Organizer
- H. Frauenrath
Contact
- Fontcuberta i Morral Anna <anna.fontcuberta-morral@epfl.ch>