2011 Photomicrography Competition
![Small World](/images/SW50-logo.png)
![](https://www.nikonsmallworld.com/images/photos/2011/_photo800/Entry_20203_Callahan_Dennis-Beautiful_Failures.jpg)
6th Place
Cracked gallium arsenide solar cell films
Dennis Callahan
- Affiliation
- California Institute of Technology (Caltech)
Department of Applied Physics & Materials Science
Pasadena, California, USA
- Technique
- Magnifaction
- 50