Anomalous hydrodynamic behavior of lyotropic smectic phases of hydrated phospholipid at low frequencies

Jun Yamamoto; Yuka Tabe; Koji Okano

doi:10.1143/JJAP.31.L1560

Anomalous hydrodynamic behavior of lyotropic smectic phases of hydrated phospholipid at low frequencies

Jun Yamamoto^*, Yuka Tabe, Koji Okano

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

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 La phase (the lyotropic smectic-A phase) the longitudinal viscosity diverges as 1 /co when the circular frequency goes to zero. In addition, we were able to construct the T-RH phase diagram of the La- Lp. 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).

Original language	English
Pages (from-to)	L1560-L1562
Journal	Japanese journal of applied physics
Volume	31
Issue number	11
DOIs	https://doi.org/10.1143/JJAP.31.L1560
Publication status	Published - 1992 Nov
Externally published	Yes

Keywords

1 /co-type viscosity divergence
Fluctuating hydrodynamics
L-L phase transition
Layer compression modulus
Longitudinal viscosity
Lyotropic smectic

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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10.1143/JJAP.31.L1560

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title = "Anomalous hydrodynamic behavior of lyotropic smectic phases of hydrated phospholipid at low frequencies",

abstract = "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 La phase (the lyotropic smectic-A phase) the longitudinal viscosity diverges as 1 /co when the circular frequency goes to zero. In addition, we were able to construct the T-RH phase diagram of the La- Lp. 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).",

keywords = "1 /co-type viscosity divergence, Fluctuating hydrodynamics, L-L phase transition, Layer compression modulus, Longitudinal viscosity, Lyotropic smectic",

author = "Jun Yamamoto and Yuka Tabe and Koji Okano",

year = "1992",

month = nov,

doi = "10.1143/JJAP.31.L1560",

language = "English",

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journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",

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TY - JOUR

T1 - Anomalous hydrodynamic behavior of lyotropic smectic phases of hydrated phospholipid at low frequencies

AU - Yamamoto, Jun

AU - Tabe, Yuka

AU - Okano, Koji

PY - 1992/11

Y1 - 1992/11

N2 - 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 La phase (the lyotropic smectic-A phase) the longitudinal viscosity diverges as 1 /co when the circular frequency goes to zero. In addition, we were able to construct the T-RH phase diagram of the La- Lp. 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).

AB - 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 La phase (the lyotropic smectic-A phase) the longitudinal viscosity diverges as 1 /co when the circular frequency goes to zero. In addition, we were able to construct the T-RH phase diagram of the La- Lp. 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).

KW - 1 /co-type viscosity divergence

KW - Fluctuating hydrodynamics

KW - L-L phase transition

KW - Layer compression modulus

KW - Longitudinal viscosity

KW - Lyotropic smectic

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DO - 10.1143/JJAP.31.L1560

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JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

IS - 11

ER -

Anomalous hydrodynamic behavior of lyotropic smectic phases of hydrated phospholipid at low frequencies

Abstract

Keywords

ASJC Scopus subject areas

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