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Microgravity Processing of Biopolymer/Metal Composites for NLO Applications

Published online by Cambridge University Press:  10 February 2011

C.M. Cuttle
Affiliation:
Northeastern University, Chemical Engineering, Boston, MA 02115
M.V. Cattaneo
Affiliation:
Cambridge Scientific, Inc., 195 Common Street, Belmont, MA 02478-2909
J.D. Gresser
Affiliation:
Cambridge Scientific, Inc., 195 Common Street, Belmont, MA 02478-2909
D.L. Wise
Affiliation:
Cambridge Scientific, Inc., 195 Common Street, Belmont, MA 02478-2909
D.O. Frazier
Affiliation:
National Aeronautics and Space Administration - George C. Marshall Space Flight Center, AL
F. Aranda
Affiliation:
Hanscom AFB, Bedford, MA
D.J. Trantolo
Affiliation:
Cambridge Scientific, Inc., 195 Common Street, Belmont, MA 02478-2909
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Abstract

The overall objective of this project is the development of NLO-active materials with optical clarity and mechanical strength. These materials are intended for laser eye protection. By combining χ2 and χ3 optical properties, the intensity of incident laser radiation may be efficiently reduced. Using an in-plane poling technique, aligned films of liquid crystal poly(benzyl-Lglutamate), PBLG, were made which showed higher second harmonic generation (SHG) values compared to quartz. Silver sols in the 10-90 nm diameter size range were complexed with tricyanovinyl aniline, TCVA, resulting in composite PBLG/Ag Sol films with higher than at least an order of magnitude of χ3 values materials such as polydiacetylenes and nitroanilines. These polymeric NLO materials offer definite advantages in terms of easy processability into films for the manufacture of the optical elements necessary for laser eye protection.

Type
Research Article
Copyright
Copyright © Materials Research Society 1999

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