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Full Paper
Optically induced birefringence and holography in silk
Article first published online: 19 NOV 2011
DOI: 10.1002/polb.23003
Copyright © 2011 Wiley Periodicals, Inc.
Issue
Journal of Polymer Science Part B: Polymer Physics
Volume 50, Issue 4, pages 257–262, 15 February 2012
Additional Information
How to Cite
Cronin-Golomb, M., Murphy, A. R., Mondia, J. P., Kaplan, D. L. and Omenetto, F. G. (2012), Optically induced birefringence and holography in silk. J. Polym. Sci. B Polym. Phys., 50: 257–262. doi: 10.1002/polb.23003
Publication History
- Issue published online: 4 JAN 2012
- Article first published online: 19 NOV 2011
- Manuscript Accepted: 28 OCT 2011
- Manuscript Received: 27 OCT 2011
Funded by
- U.S. Army Research Laboratory and the U.S. Army Research Office. Grant Number: W911 NF-07-1-0618
- DARPA-DSO
- Abstract
- Article
- References
- Cited By
Keywords:
- azo polymers;
- biomaterials;
- optics;
- photophysics
Abstract
In this study, we demonstrated that thin films of azobenzene-modified Bombyx mori silk showed optically induced effects similar to those found in other polymers incorporating azobenzene moieties. Optically induced anisotropy in refractive index reached 7 × 10−3 with 18 J cm−2 required to reach 50% of steady state. Holograms were formed with diffraction efficiencies reaching 2.5%. The holograms were accompanied by surface relief gratings and measurements of the mechanical properties of films with surface relief gratings showed that the raised areas were more adhesive than the lower areas. We also demonstrated the fidelity of holographic images. © 2011 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys, 2011