ANOMALOUS HYDRODYNAMIC BEHAVIOR OF LYOTROPIC SMECTIC PHASES OF HYDRATED PHOSPHOLIPID AT LOW-FREQUENCIES

被引：3

作者：

YAMAMOTO, J ^{[1
]}

TABE, Y ^{[1
]}

OKANO, K ^{[1
]}

机构：

[1] UNIV TOKYO, FAC ENGN, DEPT APPL PHYS, BUNKYO KU, TOKYO 113, JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1992年 / 31卷 / 11A期

关键词：

LYOTROPIC SMECTIC; L-ALPHA-L-BETA' PHASE TRANSITION; LAYER COMPRESSION MODULUS; LONGITUDINAL VISCOSITY; 1/OMEGA-TYPE VISCOSITY DIVERGENCE; FLUCTUATING HYDRODYNAMICS;

D O I：

10.1143/JJAP.31.L1560

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We measured the frequency dependence of the longitudinal viscosity and the layer compression modulus of homeotropically aligned multilamellar film of hydrated dimyristoyl phosphatidylcholine (DMPC) at low frequencies from 10 Hz to 1 kHz, varying temperature (T) and relative humidity (RH) systematically. We have, for the first time, demonstrated unambiguously that in the L(alpha) phase (the lyotropic smectic-A phase) the longitudinal viscosity diverges as 1/omega when the circular frequency goes to zero. In addition, we were able to construct the T-RH phase diagram of the L(alpha)-L(beta') transition of hydrated DMPC, based upon the T and RH dependences of the layer compression modulus. The phase boundary thus determined agreed well with that obtained by X-ray scattering by Smith et al. (J. Chem. Phys. 92 (1990) 4519).

引用

页码：L1560 / L1562

页数：3

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