Soft-stiff regime crossover for an aerosil network dispersed in liquid crystals

Journal Article · Wed Mar 15 00:00:00 EST 2006 · Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics

DOI:https://doi.org/10.1103/PHYSREVE.73.0· OSTI ID:20778863

Cordoyiannis, George; Nounesis, George ^[1]; Kralj, Samo ^[2]; Zumer, Slobodan ^[3]; Kutnjak, Zdravko ^[4]

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1. National Centre for Scientific Research 'Demokritos', 153 10 Aghia Paraskevi (Greece)
2. Laboratory of Physics of Complex Systems, Faculty of Education, University of Maribor, Koroska 160, 2000 Maribor (Slovenia)
3. Department of Physics, Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana (Slovenia)
4. Jozef Stefan Institute, P.O. Box 3000, 1001 Ljubljana (Slovenia)

Hydrophilic and hydrophobic aerosil particles immersed in S-(+)-[4-(2-methylbutyl) phenyl 4-n-octylbiphenyl-4-carboxylate] or [p-(n-decyloxy) benzylidene-p-amino-(2-methylbutyl) cinnamate] compound have been studied by employing x-ray diffraction. The aerosil-induced relative layer compression {delta}d has been measured in the smectic A phase as a function of aerosil concentration x. {delta}d(x) is shown to sensitively monitor the intermediate-rigid transition of the adaptive aerosil network. The dominant mechanism leading to the {delta}d(x) profiles is the global establishment of the aerosil-induced molecular tilt in the smectic A phase.

• OSTI ID: 20778863
• Journal Information: Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, Vol. 73, Issue 3; Other Information: DOI: 10.1103/PhysRevE.73.031707; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-651X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AEROSOLS
CARBOXYLATION
LAYERS
LIQUID CRYSTALS
ORGANIC COMPOUNDS
PARTICLES
X-RAY DIFFRACTION