Search Results - "Marcerou, J P"

(α,η) phase diagrams in tilted chiral smectics by Rjili, M., Marcerou, J.P., Gharbi, A., Othman, T.

“…The polymorphism of tilted chiral smectics liquid crystals is incredibly rich and encompasses many subphases such as SmCA⁎; SmCFi1⁎; SmCFi2⁎; SmC⁎; SmCα⁎. The…”
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Thermal hysteresis at the phase transition in liquid crystalline materials by Soltani, T., Marcerou, J.P., Othman, T.

“…Experimental results on antiferroelectric liquid crystalline materials are presented using techniques such as dielectric and electro-optical measurements. A…”
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Establishment of phase diagram of a chiral smectic liquid crystal by Soltani, T., Gharbi, A., Gineste, S., Marcerou, J.P., Bitri, N.

“…Chiral smectic liquid crystals are well known to exhibit the following sequence of phases as the temperature is increased: Sm- C A ⁎ , Sm- C Fi 1 ⁎ , Sm- C Fi…”
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Dielectric and thermodynamic studies of Smectic-A-Smectic-C phase transition in antiferroelectric liquid crystal: thermal hysteresis by Soltani, T., Chmingui, M., Marcerou, J.P., Othman, T.

“…We present the experimental evidence and theoretical studies of the para-ferroelectric phase transition in the chiral liquid crystal C12HH. The investigated…”
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Scanning conoscopy measurement of the optical properties of chiral smectic liquid crystals by Bitri, N., Gharbi, A., Marcerou, J.P.

“…We report on a new scanning conoscopic method which, by rotating the sample and analyzing the ellipticity of transmitted light, provides an accurate tool to…”
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Field-temperature phase diagrams in chiral tilted smectics, evidencing ferroelectric and ferrielectric phases by MARCEROU, J. P, NGUYEN, H. T, BITRI, N, GHARBI, A, ESSID, S, SOLTANI, T

“…Usual ferroelectric compounds undergo a paraelectric-to-ferroelectric phase transition when the susceptibility of the electric polarization density changes its…”
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Evidence for different polymorphisms with and without an external electric field in a series of bent-shaped molecules by Bedel, J P, Rouillon, J C, Marcerou, J P, Nguyen, H T, Achard, M F

“…Five fluid tilted mesophases are observed in a series of achiral banana-shaped compounds. The terminal chain length is the pertinent molecular parameter which…”
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Electric field-induced phase transitions in a smectic chiral liquid crystal by Essid, S., Bitri, N., Dhaouadi, H., Gharbi, A., Marcerou, J. P.

“…The (E-T) phase diagram of the chiral smectic liquid crystal C7F2 has been established by varying the two thermodynamic parameters: temperature (T) and…”
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Switching of banana liquid crystal mesophases under field by ACHARD, M. F, BEDEL, J. Ph, MARCEROU, J. P, NGUYEN, H. T, ROUILLON, J. C

“…Taking advantage of the great number of bent-core or "banana" compounds synthesized and studied in the laboratory, we describe their behaviour under the…”
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Optic and electro-optic investigations on SmQ, SmCA and L phases in highly chiral compounds by Manai, M., Gharbi, A., Marcerou, J.P., Nguyen, H.T., Rouillon, J.C.

“…Chiral molecules give rise to a large variety of mesophases. Well-known examples are cholesteric or ferroelectric smectic phases where the chirality tends to…”
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Electro-optical switching properties for measuring the parameters of a ferroelectric liquid crystal by Essid, S., Manai, M., Gharbi, A., Marcerou, J. P., Rouillon, J. C.

“…We present a description of the reorientation of the macroscopic polarization P S under a switching field in a ferroelectric liquid crystal assuming the…”
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New switchable smectic phases in banana-shaped compounds by Bedel, J. P., Rouillon, J. C., Marcerou, J. P., Laguerre, M., Nguyen, H. T., Achard, M. F.

“…A new series of achiral compounds with banana-shaped molecules ('E n ') has been synthesized and studied by the classical techniques (optical microscopy,…”
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Theoretical and experimental study of the effect of fluorine substitution on stability and viscoelastic properties of smectic phases by Soltani, T., Fouzai, M., Dhaoudi, H., Marcerou, J.P., Othman, T.

“…Some chiral series with benzoate cores (CnHH, CnF3 and CnF2) are reported. These series (hydrogenous, monofluoro-substituted in positions 2 and 3 of the first…”
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Effect of enantiomeric excess on the smectic-C phases under electric field by Chemingui, M., Soltani, T., Marcerou, J.P., Othman, T.

“…A series of enantiomeric mixtures of 4-(1-methylheptyloxycarbonyl) phenol 4'-octyloxybiphenyl-4-carbonate (MHPOBC) is reported to understand the structures and…”
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Physical characterization of B1 and B2 phases in a newly synthesized series of banana shaped molecules by Bedel, J. P., Rouillon, J. C., Marcerou, J. P., Laguerre, M., Achard, M. F., Nguyen, H. T.

“…A new homologous series of achiral banana-shaped mesogens ('Cn') has been synthesized and studied by classical techniques (optical microscopy, differential…”
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Dendrite-like texture growth in the nematic liquid crystal phase of 4-n-heptyl- and 4-n-octyl-oxybenzoic acids aligned by a polyimide coating by Marcerou, J. P., Petrov, M. P., Naradikian, H., Nguyen, H. T.

“…An oriented dendrite-like texture is reported, appearing at a definite temperature in the nematic phase range of 4-n-heptyl- and 4-n-octyl-oxybenzoic acids…”
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Extension of the Hamaneh-Taylor model using the macroscopic polarization for the description of chiral smectic liquid crystals by Dhaouadi, H, Bitri, N, Essid, S, Soltani, T, Gharbi, A, Marcerou, J P

“…Chiral smectic liquid crystals exhibit a series of phases, including ferroelectric, antiferroelectric, and ferrielectric commensurate structures as well as an…”
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Banana-shaped molecules derived from substituted isophthalic acids by Nguyen, H. T., Bedel, J. P., Rouillon, J. C., Marcerou, J. P., Achard, M. F.

“…In this paper we present a review of five-rings banana-shaped molecules derived from isophthalic acids. This study deals with about a hundred compounds and…”
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Temperature behavior of the order-parameter invariants in the uniaxial and biaxial nematic phases of a lyotropic liquid crystal by GALERNE, Y, MARCEROU, J. P

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Synthesis, characterisation and behaviour under a field of a chiral smectic liquid crystal by Soltani, T., Bitri, N., Dhaouadi, H., Gharbi, A., Marcerou, J. P., Nguyen, H. T.

“…The C12HH compound has been synthesised and the phase transition temperatures were obtained by combining several experimental techniques. This compound…”
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