We thank A. Crispini for the X-ray diffraction patterns, G. Carbone for his help with AFM and E. Perrotta for the acquisition of TEM images. Supported in part by CIPE grants (Clusters 14 and 26) and by MIUR through a PRIN grant.
Photorefractive Performance Enhancement in Polymer Dispersions of Nanosized Crystalline Domains†
Article first published online: 25 APR 2003
© 2003 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Volume 15, Issue 9, pages 723–726, May, 2003
How to Cite
Termine, R., Aiello, I., Dattilo, D., Ghedini, M. and Golemme, A. (2003), Photorefractive Performance Enhancement in Polymer Dispersions of Nanosized Crystalline Domains. Adv. Mater., 15: 723–726. doi: 10.1002/adma.200304768
- Issue published online: 25 APR 2003
- Article first published online: 25 APR 2003
- Manuscript Accepted: 2 JAN 2003
- Manuscript Received: 16 DEC 2002
- Photorefractive materials
Photorefractive polymeric nanosized dispersions of crystalline materials with high dynamic range have been developed using controlled phase-separation techniques. Orientational birefringence is induced by internal electric fields via the dielectric anisotropy of crystalline domains, rather than through the usual reorientation of molecular dipoles. This more efficient mechanism can increase photorefractive performance by two orders of magnitude and can in principle be applied to optimize other materials for a variety of applications, including medical imaging and image processing.