Anomalous Hydrodynamic Behavior of Lyotropic Smectic Phases of Hydrated Phospholipid at Low Frequencies
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概要
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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_α phase (the lyotropic smectic-A phase) the longitudinal viscosity diverges as 1/ω when the circular frequency goes to zero. In addition, we were able to construct the T-RH phase diagram of the L_α-L_<β'> 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) .
- 社団法人応用物理学会の論文
- 1992-11-15
著者
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YAMAMOTO Jun
Department of Polymer Science and Engineering, Kyoto Institute of Technology
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Tabe Yuka
Department Of Applied Physics Faculty Of Engineering The University Of Tokyo:(present Address) Elect
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Okano Koji
Department Of Applied Phisic Faculty Of Engineering The University Of Tokyo
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Okano Koji
Department Of Applied Physics Faculty Of Engineering The University Of Tokyo:(present Address) Facul
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Yamamoto Jun
Department Of Anesthesiology Sapporo Medical University School Of Medicine
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Yamamoto Jun
Department Of Applied Physics Faculty Of Engineering The University Of Tokyo:(present Address) Insti
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