UNIVERSAL NATURE OF THE NEMATIC-TO-ISOTROPIC TRANSITION IN SOLUTIONS OF DISCOTIC MICELLES

被引:23
作者
BODEN, N
CLEMENTS, J
DAWSON, KA
JOLLEY, KW
PARKER, D
机构
[1] UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720
[2] MASSEY UNIV,DEPT CHEM & BIOCHEM,PALMERSTON NORTH,NEW ZEALAND
关键词
D O I
10.1103/PhysRevLett.66.2883
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The effective exponents characterizing the orientational order parameter at the nematic-to-isotropic transition in discotic micellar solutions obtained on dissolution of either cesium pentadecafluoro-octanoate or ammonium pentadecafluoro-octanoate in water have been measured and found to have the value 0.34 +/- 0.02 over a wide range of concentrations. Thus, within experimental error, these exponents appear to be universal to a remarkably high degree. It is argued that, as for second-order phase transitions, these exponents characterize the fluctuations near the transition and can presumably be associated with some inaccessible fixed point of the renormalization-group flow.
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收藏
页码:2883 / 2886
页数:4
相关论文
共 23 条
[1]   ELECTRICAL-CONDUCTIVITY MEASUREMENTS OF THE ORIENTATIONAL ORDER PARAMETER IN THE MICELLAR NEMATIC PHASE OF THE CESIUM PENTADECAFLUOROCTANOATE WATER-SYSTEM [J].
BODEN, N ;
PARKER, D ;
JOLLEY, KW .
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1987, 152 :121-127
[2]   ELECTRICAL-CONDUCTIVITY IN MACROSCOPICALLY ALIGNED NEMATIC AND LAMELLAR MESOPHASES OF THE CESIUM PERFLUORO-OCTANOATE-WATER SYSTEM [J].
BODEN, N ;
CORNE, SA ;
JOLLEY, KW .
CHEMICAL PHYSICS LETTERS, 1984, 105 (01) :99-103
[3]   ARE NEMATIC AMPHIPHILIC LIQUID-CRYSTALLINE MESOPHASES THERMODYNAMICALLY STABLE [J].
BODEN, N ;
JACKSON, PH ;
MCMULLEN, K ;
HOLMES, MC .
CHEMICAL PHYSICS LETTERS, 1979, 65 (03) :476-479
[4]   LYOTROPIC MESOMORPHISM OF THE CESIUM PENTADECAFLUOROOCTANOATE WATER-SYSTEM - HIGH-RESOLUTION PHASE-DIAGRAM [J].
BODEN, N ;
CORNE, SA ;
JOLLEY, KW .
JOURNAL OF PHYSICAL CHEMISTRY, 1987, 91 (15) :4092-4105
[5]   ORDER-DISORDER TRANSITIONS IN SOLUTIONS OF DISCOID MICELLES [J].
BODEN, N ;
CORNE, SA ;
HOLMES, MC ;
JACKSON, PH ;
PARKER, D ;
JOLLEY, KW .
JOURNAL DE PHYSIQUE, 1986, 47 (12) :2135-2144
[6]   NEMATIC LAMELLAR TRICRITICAL BEHAVIOR AND STRUCTURE OF THE LAMELLAR PHASE IN THE AMMONIUM PENTADECAFLUOROOCTANOATE (APFO) WATER-SYSTEM [J].
BODEN, N ;
CLEMENTS, J ;
JOLLEY, KW ;
PARKER, D ;
SMITH, MH .
JOURNAL OF CHEMICAL PHYSICS, 1990, 93 (12) :9096-9103
[7]  
BODEN N, 1984, CHEM PHYS LETT, V76, P109
[8]  
Fricke H., 1953, J PHYS CHEM-US, V57, P934
[9]   A mathematical treatment of the electric conductivity and capacity of disperse systems I The electric conductivity of a suspension of homogenous spheroids [J].
Frickl, H .
PHYSICAL REVIEW, 1924, 24 (05) :575-587
[10]   LANDAU THEORY OF THE NEMATIC ISOTROPIC-PHASE TRANSITION [J].
GRAMSBERGEN, EF ;
LONGA, L ;
DEJEU, WH .
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1986, 135 (04) :195-+