X-RAY-DIFFRACTION STUDY OF THE SUPERLIQUID REGION OF THE PHASE-DIAGRAM OF A LANGMUIR MONOLAYER

被引：102

作者：

SHIH, MC ^{[1
]}

BOHANON, TM ^{[1
]}

MIKRUT, JM ^{[1
]}

ZSCHACK, P ^{[1
]}

DUTTA, P ^{[1
]}

机构：

[1] OAK RIDGE NATL LAB, DIV MET & CERAM, OAK RIDGE, TN 37830 USA

来源：

PHYSICAL REVIEW A | 1992年 / 45卷 / 08期

关键词：

D O I：

10.1103/PhysRevA.45.5734

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Lipid-monolayer isotherms often show a kink that changes to a flat section and back to a kink within a narrow temperature range. In heneicosanoic acid monolayers, along a high-pressure isobar, we have observed a slightly distorted "rotator-I" phase between the known distorted hexagonal and hexagonal phases. Isotherms show a flat section only where this new phase occurs. The diffraction peaks are broader in this phase than in the adjacent phases; this reentrant behavior occurs in the same region of the phase diagram where the viscosity shows anomalous trends (first reported, we believe, by Copeland, Harkins, and Boyd [J. Chem. Phys. 10, 357 (1942)] and thought to indicate a "superliquid" phase).

引用

页码：5734 / 5737

页数：4

共 21 条

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