1. Department of Physics and Centre for Plastic Electronics
2. The Blackett Laboratory
3. Imperial College London
4. London SW7 2AZ
5. UK
6. Department of Materials
7. Eidgenössische Technische Hochschule (ETH) Zürich
8. Zürich 8093
9. Switzerland
10. Department of Materials and Centre for Plastic Electronics
11. Royal School of Mines
12. Department of Physics