Optical characterization of polymer dispersed liquid crystals for holographic recording

2003 ◽  
Vol 93 (12) ◽  
pp. 9669-9674 ◽  
Author(s):  
D. E. Lucchetta ◽  
L. Criante ◽  
F. Simoni
Keyword(s):  
Liquid Crystals ◽  
Optical Characterization ◽  
Holographic Recording ◽  
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

Holographic recording in polymer-dispersed liquid crystals

2005 ◽  
Author(s):  
K. Beev ◽  
Simeon Sainov ◽  
T. Angelov ◽  
Alexander G. Petrov
Keyword(s):  
Liquid Crystals ◽  
Holographic Recording ◽  
Polymer Dispersed Liquid Crystals ◽  
Polymer Dispersed

Polymer Dispersed Liquid Crystals as Optical Storage Materials

1999 ◽  
Vol 559 ◽  
Author(s):  
F. Simoni ◽  
S. Di Bella ◽  
L. Lucchetti ◽  
G. Cipparrone ◽  
A. Mazzulla
Keyword(s):  
Phase Separation ◽  
Liquid Crystals ◽  
Optical Storage ◽  
Optical Recording ◽  
Separation Technique ◽  
Holographic Recording ◽  
Curing Process ◽  
Binary Images ◽  
Polymer Dispersed Liquid Crystals ◽  
Polymer Dispersed

ABSTRACTAmong the different methods used to prepare Polymer Dispersed Liquid Crystals (PDLC), the Polymerisation Induced Phase Separation technique (PIPS) can be exploited to obtain optical recording in these materials. The possibility of performing optical storage of binary images in PDLC during the curing process and post curing holographic recording, will be described and discussed.

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.

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