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Smectic-A and Smectic-C Phases and Phase Transitions in Liquid Crystal-Aerosil Gels

[PDF] from arxiv.orgB Freelon, M Ramazanoglu, PJ Chung… - Arxiv preprint arXiv: …, 2011 - arxiv.org
... S Liquid Crystal-Aerosil Gels ... The limiting 8 5 S Smectic-A correlation length follows a
power-law dependence on the aerosil density in quantitative agreement with the limiting
lengths measured previously in other Smectic-A liquid crystal gels. ...
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Study of particle rearrangement, compression behavior and dissolution properties after melt dispersion of ibuprofen, Avicel and Aerosil

S Mallick, S Kumar Pradhan, M Chandran… - Results in Pharma …, 2011 - Elsevier
Particle rearrangements, compaction under pressure and in vitro dissolution have been evaluated
after melt dispersion of ibuprofen, Avicel and Aerosil. The Cooper–Eaton and Kuno equations
were utilized for the determination of particle rearrangement and compression behavior ...
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Isotropic-nematic transition at the surface of a liquid crystal embedded in an aerosil network

S Aya, Y Sasaki, F Araoka, K Ishikawa, K Ema… - Physical Review E, 2011 - APS
We reexamined the isotropic-nematic (Iso-N) phase transitions of 4-n-heptyl cyanobiphenyl
(7CB) embedded in aerosils of silica nanoparticle dispersions using highly sensitive differential
scanning calorimetry (HS-DSC), polarizing optical microscopy (POM), and retardation ...
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Slow Molecular Processes in a Liquid Crystal Embedded in Aerosil Matrix: Nuclear Magnetic Relaxometric Study

M Rajeswari, S Dhara, K Venu… - … Crystals and Liquid …, 2011 - Taylor & Francis
Frequency dispersion studies on proton spin-lattice relaxation rates of a liquid crysal
(4′-octyloxy-4-cyanobiphenyl) embedded in Aerosil matrix show significant increase at low
frequencies (sub-MHz regime) relative to the bulk sample, and are interpreted as ...
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Manufacture of Ternary Solid Dispersions Composed of Nifedipine, Eudragit® E and Adsorbent

P Sriamornsak, S Kontong, Y Weerapol… - Advanced Materials …, 2011 - Trans Tech Publ
... Industries (Germany). Two types of adsorbent, ie, hydrophilic silicon dioxide (Aerosil ® 200) and
hydrophobic silicon dioxide (Aerosil ® R972) were purchased from Evonik Industries (Germany)
and used as received without further purification. Sample preparation. ...

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