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Infrared Switching Polymer Dispersed Liquid Crystals

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Abstract

Infrared Polymer Dispersed Liquid Crystals (PDLCs) - polymethylmethacrylate host and E7 eutectic liquid crystal mixture - are formed through an adaptation of the thermally induced phase separation process, enabling facile creation of large liquid crystal droplet formation in the polymer host outside of the normal thermodynamic limits. The PDLCs were characterized electro-optically and microscopically. The effects of the processing parameters on the droplet morphology and switching efficiency are analyzed and presented for these systems. Droplet sizes up to 15 &m have been observed with efficient switching characteristics in the 3 - 5 μm range.

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Acknowledgments

The authors wish to thank Dr. Antonio Sanchez-Rubio and Mr. Chris Cook of MIT/Lincoln Labs for the use of their facilities. This research was funded through the Department of Defense SBIR Phase II program under DARPA contract number DAAH01-93-C-R279.

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Authors and Affiliations

  1. Advanced Surface Technology, Inc., 9 Linnell Circle, Billerica, MA, 01821, USA

    R.A. Moody & I.H. Loh

  2. Invent Resources, 12 Wagon Trail, Nashua, NH, 03062, USA

    A.Z. Hed

Authors
  1. R.A. Moody
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  2. I.H. Loh
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  3. A.Z. Hed
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Moody, R., Loh, I. & Hed, A. Infrared Switching Polymer Dispersed Liquid Crystals. MRS Online Proceedings Library 413, 345–350 (1995). https://doi.org/10.1557/PROC-413-345

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  • DOI: https://doi.org/10.1557/PROC-413-345

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