Behavior of the layer compression modulus as a function of frequency near the nematic-smectic-A and re-entrant nematic-smectic-A phase transitions

被引：10

作者：

Rogez, D ^{[1
]}

Collin, D ^{[1
]}

Martinoty, P ^{[1
]}

机构：

[1] Univ Strasbourg 1, Lab Dynam Fluides Complexes, CNRS, UMR 7506, F-67070 Strasbourg, France

来源：

EUROPEAN PHYSICAL JOURNAL E | 2004年 / 14卷 / 01期

关键词：

D O I：

10.1140/epje/i2004-10004-6

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A progressive cross-over of the layer compression modulus B from a simple power law behavior to a saturation behavior when the frequency is increased from 1 Hz to 2 . 10(3) Hz is observed for the first time near the nematic-smectic-A and the re-entrant nematic-smectic-A phase transitions of a mixture of 4-cyano-4'-(n-hexyloxy)biphenyl and 4-cyano-4'-(n-octyloxy)biphenyl (6OCB-8OCB). This result shows that the saturation of B determined by second sound near the nematic-smectic-A phase transition of a similar mixture is dynamic in nature, and cannot be associated with the static saturation effect predicted by the dislocation loop model, as proposed previously.

引用

页码：43 / 47

页数：5

共 37 条

[1] OBSERVATION OF ALGEBRAIC DECAY OF POSITIONAL ORDER IN A SMECTIC LIQUID-CRYSTAL
ALSNIELSEN, J
LITSTER, JD
BIRGENEAU, RJ
KAPLAN, M
SAFINYA, CR
LINDEGAARDANDERSEN, A
MATHIESEN, S
[J]. PHYSICAL REVIEW B, 1980, 22 (01): : 312 - 320
[2] ANISOTROPIC RENORMALIZATION OF THERMODYNAMIC QUANTITIES ABOVE THE NEMATIC SEMATIC-A PHASE-TRANSITION
ANDERECK, BS
PATTON, BR
[J]. PHYSICAL REVIEW E, 1994, 49 (02): : 1393 - 1403
[3] Influence of nematic range on birefringence, heat capacity and elastic modulus near a nematic-smectic-A phase transition
Beaubois, F
Claverie, T
Marcerou, JP
Rouillon, JC
Nguyen, HT
Garland, CW
Haga, H
[J]. PHYSICAL REVIEW E, 1997, 56 (05): : 5566 - 5574
[4] NONVANISHING OF THE LAYER COMPRESSIONAL ELASTIC-CONSTANT AT THE SMECTIC-A TO NEMATIC PHASE-TRANSITION - A CONSEQUENCE OF LANDAU-PEIERLS INSTABILITY
BENZEKRI, M
CLAVERIE, T
MARCEROU, JP
ROUILLON, JC
[J]. PHYSICAL REVIEW LETTERS, 1992, 68 (16) : 2480 - 2483
[5] CRITICAL-BEHAVIOR OF THE LAYER COMPRESSIONAL ELASTIC CONSTANT-B AT THE SMECTIC-A NEMATIC PHASE-TRANSITION
BENZEKRI, M
MARCEROU, JP
NGUYEN, HT
ROUILLON, JC
[J]. PHYSICAL REVIEW B, 1990, 41 (13): : 9032 - 9037
[6] LIGHT-SCATTERING STUDY OF A SMECTIC-A PHASE NEAR SMECTIC-A-NEMATIC TRANSITION
BIRECKI, H
SCHAETZING, R
RONDELEZ, F
LITSTER, JD
[J]. PHYSICAL REVIEW LETTERS, 1976, 36 (23) : 1376 - 1379
[7] PHASE-TRANSITION IN A LATTICE MODEL OF SUPERCONDUCTIVITY
DASGUPTA, C
HALPERIN, BI
[J]. PHYSICAL REVIEW LETTERS, 1981, 47 (21) : 1556 - 1560
[8] CRITICAL-BEHAVIOR OF A LATTICE MODEL OF THE NEMATIC TO SMECTIC-A TRANSITION
DASGUPTA, C
[J]. JOURNAL DE PHYSIQUE, 1987, 48 (06): : 957 - 970
[9] HIGH-RESOLUTION X-RAY AND LIGHT-SCATTERING STUDY OF CRITICAL BEHAVIOR ASSOCIATED WITH THE NEMATIC-SMECTIC-A TRANSITION IN 4-CYANO-4'-OCTYLBIPHENYL
DAVIDOV, D
SAFINYA, CR
KAPLAN, M
DANA, SS
SCHAETZING, R
BIRGENEAU, RJ
LITSTER, JD
[J]. PHYSICAL REVIEW B, 1979, 19 (03): : 1657 - 1663
[10] DISLOCATIONS AND THE NEMATIC TO SMECTIC-A TRANSITION FOR ARBITRARY VALUES OF K1
DAY, AR
LUBENSKY, TC
MCKANE, AJ
[J]. PHYSICAL REVIEW A, 1983, 27 (03): : 1461 - 1467

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