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Iwamoto, M; Ou-Yang, ZC; Iwamoto, M , Tokyo Inst Technol, Dept Phys Elect, Meguro Ku, 2-12-1 Ookayama, Tokyo 1528552, Japan.
Tilting phase transition of amphiphile monolayers at the air-water interface: Physically reasoning phase portion in a phase diagram
Source PublicationJOURNAL OF CHEMICAL PHYSICS
KeywordMaxwell-displacement Current Langmuir-monolayers X-ray Symmetry Generation
AbstractThe untilting to tilting (U-->t) phase transition of amphiphile monolayers at the water-air interface is studied as a distortion of the orthogonally hexagonal orientation of molecules by a competition among entropy, Lennard-Jones potential, and the work done by surface and bulk pressures (Pi,P). The U/t phase portion in the Pi-T diagram is derived as an approximately linear van der Waals equation Pi=kT/2A(0)-Pl(0) with A(0), l(0) being the molecular area and chain length, respectively, at the U phase. A comparison with experiment in monolayers of C-14-C-24 acids [see, e.g., Peterson , Langmuir 8, 2995 (1992)] shows quantitative agreement. Besides two optimal tilting directions, i.e., in the direction to a nearest neighbor (NN) and to a next-nearest neighbor (NNN), an intermediate tilt at the NN-->NNN transition is shown to be physically possible based on Selinger-Nelson theory [Phys. Rev. Lett. 61, 416 (1988)]. (C) 2002 American Institute of Physics.
2002
ISSN0021-9606
Volume117Issue:16Pages:7705-7711
Subject AreaPhysics
Indexed BySCI
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Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/13412
Collection理论物理所科研产出_SCI论文
Corresponding AuthorIwamoto, M , Tokyo Inst Technol, Dept Phys Elect, Meguro Ku, 2-12-1 Ookayama, Tokyo 1528552, Japan.
Recommended Citation
GB/T 7714
Iwamoto, M,Ou-Yang, ZC,Iwamoto, M , Tokyo Inst Technol, Dept Phys Elect, Meguro Ku, 2-12-1 Ookayama, Tokyo 1528552, Japan.. Tilting phase transition of amphiphile monolayers at the air-water interface: Physically reasoning phase portion in a phase diagram[J]. JOURNAL OF CHEMICAL PHYSICS,2002,117(16):7705-7711.
APA Iwamoto, M,Ou-Yang, ZC,&Iwamoto, M , Tokyo Inst Technol, Dept Phys Elect, Meguro Ku, 2-12-1 Ookayama, Tokyo 1528552, Japan..(2002).Tilting phase transition of amphiphile monolayers at the air-water interface: Physically reasoning phase portion in a phase diagram.JOURNAL OF CHEMICAL PHYSICS,117(16),7705-7711.
MLA Iwamoto, M,et al."Tilting phase transition of amphiphile monolayers at the air-water interface: Physically reasoning phase portion in a phase diagram".JOURNAL OF CHEMICAL PHYSICS 117.16(2002):7705-7711.
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