P-87: Optical Characterization of Reflective Holographic Polymer Dispersed Liquid Crystals

2002 ◽  
Vol 33 (1) ◽  
pp. 538 ◽  
Author(s):  
Jun Qi ◽  
Liuliu Li ◽  
Mousumi De Sarkar ◽  
Gregory P. Crawford
Keyword(s):  
Liquid Crystals ◽  
Optical Characterization ◽  
Polymer Dispersed Liquid Crystals ◽  
Polymer Dispersed

Electro-Optical Characterization of E48:PVP Polymer Dispersed Liquid Crystals

2001 ◽  
Vol 365 (1) ◽  
pp. 305-311
Author(s):  
Cheryll Lei E. Mahinay ◽  
Claire M. Macale ◽  
Fairland F. Amos ◽  
Zenaida B. Domingo ◽  
Leonorina G. Cada
Keyword(s):  
Liquid Crystals ◽  
Optical Characterization ◽  
Polymer Dispersed Liquid Crystals ◽  
Polymer Dispersed

scholarly journals Thermal and Optical Characterization of Polymer-Dispersed Liquid Crystals

2012 ◽  
Vol 2012 ◽  
pp. 1-13 ◽  
Author(s):  
Robert A. Shanks ◽  
Daniel Staszczyk
Keyword(s):  
Liquid Crystals ◽  
Liquid Crystalline ◽  
Scanning Calorimetry ◽  
Uv Curable ◽  
Polymer Dispersed Liquid Crystals ◽  
The Matrix ◽  
Polymer Dispersed ◽  
Acrylate Resin ◽  
Display Order

Liquid crystals are compounds that display order in the liquid state above the melting temperature and below the mesogenic isotropic temperature. Polymer-dispersed liquid crystals (PDLCs) are composite materials in which liquid crystalline material is dispersed within a polymer matrix to form micron-sized droplets. The aim was to prepare several cholesteryl esters or alkoxybenzoic acid PDLCs and characterise thermal and optical properties. Differential scanning calorimetry and polarized optical microscopy were employed. The matrix polymer was a one-component UV-curable epoxy-acrylate resin. PDLCs were formed through entropy controlled phase separation resulting from UV-initiated crosslinking. The liquid crystals, both as mesogenic moieties and as dispersed droplets, exhibited various textures according to their molecular order and orientation. These textures formed in constrained regions separated by phase boundaries that occurred at temperatures characteristic of each liquid crystal used. The PDLC phase transitions occurred at temperatures lower than those exhibited by the mesogenic components in the neat state.

Holographic polymer-dispersed liquid crystals in display applications

2003 ◽  
Author(s):  
Richard L. Sutherland ◽  
Lalgudi V. Natarajan ◽  
Vincent P. Tondiglia ◽  
Timothy J. Bunning
Keyword(s):  
Liquid Crystals ◽  
Polymer Dispersed Liquid Crystals ◽  
Polymer Dispersed
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