OPTICAL INVESTIGATIONS IN THE VARIOUS PHASES OF AN ANTIFERROELECTRIC LIQUID-CRYSTAL

被引：29

作者：

PHILIP, J ^{[1
]}

LALANNE, JR ^{[1
]}

MARCEROU, JP ^{[1
]}

SIGAUD, G ^{[1
]}

机构：

[1] CNRS, CTR RECH PAUL PASCAL, F-33600 PESSAC, FRANCE

来源：

PHYSICAL REVIEW E | 1995年 / 52卷 / 02期

关键词：

D O I：

10.1103/PhysRevE.52.1846

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We report detailed results of optical rotatory power (ORP), slective reflection (SR), refractive index anisotropy (RIA), and anisotropic Rayleigh scattering (ARS) measurements in the antiferroelectric liquid crystal, 4-(1-methylheptyl-oxycarbonyl) phenyl-4'-octyloxy phenyl-4-carboxylate (MHPOBC). The ORP in Sm-A and Sm-C*(a) phases has been found to be zero or at least very weak compared to ordinary liquids with strongly chiral molecules. No helical pitch is observed in the Sm-A, Sm-C*(a) and Sm-C*(g)amma phases in the range 200-2200 nm. The combined use of ORP and SR allows the precise determination of the tilt angle of the smectic-C phases. Obtained values are found to be in good agreement with both theoretical calculations and experimental results obtained from RIA. Moreover, ARS reveals the local biaxial character of the Sm-C*(A) phase, while the absence of critical behavior of the Sm-A <-- Sm-C*(a) phase transition is a direct proof of the lack of biaxiality in the Sm-C*(a) phase.

引用

收藏

页码：1846 / 1856

页数：11

相关论文

共 49 条

[21] MOLECULAR ORIENTATIONAL STRUCTURES IN FERROELECTRIC, FERRIELECTRIC AND ANTIFERROELECTRIC SMECTIC LIQUID-CRYSTAL PHASES AS STUDIED BY CONOSCOPE OBSERVATION [J].

GORECKA, E ;

CHANDANI, ADL ;

OUCHI, Y ;

TAKEZOE, H ;

FUKUDA, A .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1990, 29 (01) :131-137

[22] NOVEL BIAXIAL BILAYERED FLUID MESOPHASES [J].

HARDOUIN, F ;

TINH, NH ;

LEVELUT, AM .

JOURNAL DE PHYSIQUE LETTRES, 1982, 43 (22) :L779-L784

[23] OBSERVATION OF 3 SUBPHASES IN SMECTIC C-STAR OF MHPOBC BY DIELECTRIC MEASUREMENTS [J].

HIRAOKA, K ;

TAGUCHI, A ;

OUCHI, Y ;

TAKEZOE, H ;

FUKUDA, A .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1990, 29 (01) :L103-L106

[24] CALORIMETRIC STUDY OF PHASE-TRANSITIONS IN CONFINED LIQUID-CRYSTALS [J].

IANNACCHIONE, GS ;

FINOTELLO, D .

PHYSICAL REVIEW LETTERS, 1992, 69 (14) :2094-2097

[25] SUCCESSIVE PHASE-TRANSITIONS IN ANTIFERROELECTRIC LIQUID-CRYSTAL 4-(1-METHYLHEPTYLOXYCARBONYL)PHENYL 4'-OCTYLCARBONYLOXYBIPHENYL-4-CARBOXYLATE (MHPOCBC) [J].

ISOZAKI, T ;

SUZUKI, Y ;

KAWAMURA, I ;

MORI, K ;

YAMAMOTO, N ;

YAMADA, Y ;

ORIHARA, H ;

ISHIBASHI, Y .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1991, 30 (9A) :L1573-L1575

[26] DEVILS STAIRCASE FORMED BY COMPETING INTERACTIONS STABILIZING THE FERROELECTRIC SMECTIC-C-ASTERISK PHASE AND THE ANTIFERROELECTRIC SMECTIC-C-ASTERISK(A) PHASE IN LIQUID-CRYSTALLINE BINARY-MIXTURES [J].

ISOZAKI, T ;

FUJIKAWA, T ;

TAKEZOE, H ;

FUKUDA, A ;

HAGIWARA, T ;

SUZUKI, Y ;

KAWAMURA, I .

PHYSICAL REVIEW B, 1993, 48 (18) :13439-13450

[27] COMPETITION BETWEEN FERROELECTRIC AND ANTIFERROELECTRIC INTERACTIONS STABILIZING VARIETIES OF PHASES IN BINARY-MIXTURES OF SMECTIC LIQUID-CRYSTALS [J].

ISOZAKI, T ;

FUJIKAWA, T ;

TAKEZOE, H ;

FUKUDA, A ;

HAGIWARA, T ;

SUZUKI, Y ;

KAWAMURA, I .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1992, 31 (10A) :L1435-L1438

[28] SMECTIC LAYER SWITCHING BY AN ELECTRIC-FIELD IN FERROELECTRIC LIQUID-CRYSTAL CELLS [J].

JOHNO, M ;

CHANDANI, ADL ;

OUCHI, Y ;

TAKEZOE, H ;

FUKUDA, A ;

ICHIHASHI, M ;

FURUKAWA, K .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1989, 28 (01) :L119-L120

[29] PHASE-TRANSITIONS AND CONFORMATIONAL-CHANGES IN AN ANTIFERROELECTRIC LIQUID-CRYSTAL 4-(1-METHYLHEPTYLOXYCARBONYL)PHENYL 4'-OCTYLOXYBIPHENYL-4-CARBOXYLATE (MHPOBC) [J].

KIM, KH ;

TAKANISHI, Y ;

ISHIKAWA, K ;

TAKEZOE, H ;

FUKUDA, A .

LIQUID CRYSTALS, 1994, 16 (02) :185-202

[30] PHASE-TRANSITIONS AMONG PARAELECTRIC, FERROELECTRIC, FERRIELECTRIC AND ANTIFERROELECTRIC PHASES IN A CHIRAL SMECTIC LIQUID-CRYSTAL [J].

LEE, J ;

OUCHI, Y ;

TAKEZOE, H ;

FUKUDA, A ;

WATANABE, J .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1990, 2 :SA271-SA274

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