Conference proceeding
Performance improvements for switchable H-PDLC gratings using morphological studies
Proceedings of SPIE, v 4458(1)
13 Nov 2001
Abstract
We have used atomic force microscopy (AFM) tapping techniques to study the droplet cavity morphology of a Holographically-formed Polymer Dispersed Liquid Crystal (H- PDLC). The samples were created using a Coherent Verdi laser at 532 nm to holographically form a transmission grating structure within the liquid crystal / polymer composite. The gratings were removed from their glass substrates and the liquid crystal removed, allowing us to image the inside of the droplet cavities. We found that the surface structure is rough, and that the structure varies depending on the polymer used in the material set. One result is a cavity that has a dimpled morphology. We report our investigations of the material sets, which include AFM images, image analysis of the structures, and the potential implications of such structures on liquid crystal anchoring within the droplet cavities.
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Details
- Title
- Performance improvements for switchable H-PDLC gratings using morphological studies
- Creators
- Adam K Fontecchio - John Brown UniversityGregory P Crawford - John Brown UniversityCharles C He - Goddard Space Flight CenterDavid A Content - NASA Goddard Space Flight Ctr. (USA)
- Publication Details
- Proceedings of SPIE, v 4458(1)
- Conference
- Solar and Switching Materials
- Publisher
- Society of Photo-Optical Instrumentation Engineers (SPIE)
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Electrical and Computer Engineering
- Web of Science ID
- WOS:000176126000028
- Scopus ID
- 2-s2.0-0035761752
- Other Identifier
- 991020531826704721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Engineering, Electrical & Electronic
- Materials Science, Multidisciplinary
- Optics
- Physics, Condensed Matter