TRUE INCOMMENSURATE PHASE IN MIXTURES OF 2 POLAR LIQUID-CRYSTALLINE MATERIALS

被引：12

作者：

MANG, JT ^{[1
]}

CULL, B ^{[1
]}

SHI, YS ^{[1
]}

PATEL, P ^{[1
]}

KUMAR, S ^{[1
]}

机构：

[1] KENT STATE UNIV,INST LIQUID CRYSTAL,KENT,OH 44242

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.74.4241

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

High-resolution x-ray scattering measurements of 23.0 and 28.4 mole % mixtures of TBBA in DB6 have led to the observation of a true incommensurate phase in a liquid crystal system. The phase is characterized by two primary quasi-Bragg reflections at incommensurate wave vectors. X-ray scattering measurements of a freely suspended film in the new phase have revealed that it possesses sixfold in-plane symmetry, suggesting it to be an incommensurate crystal- B or - E phase. © 1995 The American Physical Society.

引用

收藏

页码：4241 / 4244

页数：4

相关论文

共 14 条

[1] NEW CRITICAL-POINTS IN FRUSTRATED SMECTICS [J].

BAROIS, P ;

PROST, J ;

LUBENSKY, TC .

JOURNAL DE PHYSIQUE, 1985, 46 (03) :391-399

[2] X-RAY-SCATTERING STUDY OF THE SMECTIC-A1 TO SMECTIC-A2 TRANSITION [J].

CHAN, KK ;

PERSHAN, PS ;

SORENSEN, LB ;

HARDOUIN, F .

PHYSICAL REVIEW LETTERS, 1985, 54 (15) :1694-1697

[3] CALORIMETRIC STUDY OF NEMATIC-SMECTIC-A1 AND SMECTIC-A1-SMECTIC-A2 TRANSITIONS - T7, T8 AND DB6 + TBBA [J].

CHIANG, C ;

GARLAND, CW .

MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1985, 122 (1-4) :25-34

[4] STRONG INCOMMENSURATE FLUCTUATIONS IN A SMECTIC-A PHASE [J].

FONTES, E ;

HEINEY, PA ;

BAROIS, P ;

LEVELUT, AM .

PHYSICAL REVIEW LETTERS, 1988, 60 (12) :1138-1141

[5]

GARLAND CW, 1990, GEOMETRY THERMODYNAM, P221

[6] NOVEL SEQUENCE WITH INCOMMENSURATE SA PHASES IN A NEW DIMESOGENIC LIQUID-CRYSTAL [J].

HARDOUIN, F ;

ACHARD, MF ;

JIN, JL ;

SHIN, JW ;

YUN, YK .

JOURNAL DE PHYSIQUE II, 1994, 4 (04) :627-643

[7] ABSENCE OF THE INCOMMENSURATE SMECTIC-A PHASE IN DB7OCN+8OCB MIXTURES [J].

KUMAR, S ;

CHEN, L ;

SURENDRANATH, V .

PHYSICAL REVIEW LETTERS, 1991, 67 (03) :322-325

[8] PHASE-DIAGRAM OF A FRUSTRATED SMECTIC LIQUID-CRYSTAL SYSTEM AND THE ABSENCE OF THE INCOMMENSURATE SMECTIC-A(I2) PHASE [J].

PATEL, P ;

LI, C ;

KUMAR, S .

PHYSICAL REVIEW E, 1993, 47 (04) :2643-2653

[9] NONEXISTENCE OF INCOMMENSURATE SMECTIC-A PHASES IN BINARY-MIXTURES OF 8OBCAB AND DB8OCN [J].

PATEL, P ;

KEAST, SS ;

NEUBERT, ME ;

KUMAR, S .

PHYSICAL REVIEW LETTERS, 1992, 69 (02) :301-304

[10] POLYMORPHISM IN POLAR MESOGENS .2. THEORETICAL ASPECTS [J].

PROST, J ;

BAROIS, P .

JOURNAL DE CHIMIE PHYSIQUE ET DE PHYSICO-CHIMIE BIOLOGIQUE, 1983, 80 (01) :65-81