Hostname: page-component-78c5997874-v9fdk Total loading time: 0 Render date: 2024-11-09T05:58:49.744Z Has data issue: false hasContentIssue false
  • English
  • Français

Low Molar Mass Glassy Chiral Nematic Oligomer With Large Polarization Bandwidth

Published online by Cambridge University Press:  10 February 2011

S. Krishnamurthy ,
M. Kalmanash  and
V. Sethna
S. Krishnamurthy
Affiliation:
Kaiser Electronics, 2701 Orchard Parkway, San Jose, CA 95134
M. Kalmanash
Affiliation:
Kaiser Electronics, 2701 Orchard Parkway, San Jose, CA 95134
V. Sethna
Affiliation:
Kaiser Electronics, 2701 Orchard Parkway, San Jose, CA 95134
Get access

Abstract

A novel low molar mass glassy chiral nematic oligomer has been developed that exhibits a large selective reflection bandwidth (>100 nm). This has immense potential in applications requiring the polarization of light over a broad spectral bandwidth, corresponding to the range of human vision, with minimal absorption and high efficiency. Definite advantages are observed over other low molar mass and polymeric chiral nematic materials reported in the literature that typically have narrower polarization bandwidths requiring more complex structures to cover the visible spectrum. The glass transition and clearing temperatures of this material are well separated, that in turn facilitates device processing. Devices up to 4"×5" have been successfully fabricated. Their optical properties are discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 425: Symposium I – Liquid Crystals for Advanced Technologies , 1996 , 253
Copyright
Copyright © Materials Research Society 1996

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Adams, J., Haas, W. and Dailey, J., J. Appl. Phys., 42(10), p. 4,096 (1971).Google Scholar
2. Castellano, J.A. in Liquid Crystals: The Fourth State of Matter, edited by Saeva, F.D., Dekker, Marcel, New York, 1979, Chapter 12.Google Scholar
3. Krishnamurthy, S. and Chen, S.H., Macromolecules, 24, p. 4,472 (1991).Google Scholar
4. Krishnamurthy, S. and Chen, S.H., Macromolecules, 24, p. 3,481 (1991).Google Scholar
5. Shi, H. and Chen, S.H., Macromolecules, 26, p. 5,840 (1993).Google Scholar
6. Chen, S.H. and Shi, H., U.S. Patent No. 5 378 393 (3 January 1995) and its continuation in part.Google Scholar
7. Shi, H. and Chen, S.H., Liq. Crystals, 18(5), p. 733 (1995).Google Scholar
8. Hird, M., Toyne, K.J., Gray, G.W., Day, S.E. and McDonnel, D.G., Liq. Crystals, 15, p. 123 (1993).Google Scholar
9. Fergason, J.L., Molecular Crystals, 1, p. 293 (1966).Google Scholar
10. Broer, D.J., Lub, J. and Mol, G.N., Nature, 378, p. 467 (1995).Google Scholar