STUDIES ON THE DYNAMIC BEHAVIOR OF FATTY-ACID MONOLAYERS AT THE AIR-WATER-INTERFACE BY A CURRENT-MEASURING TECHNIQUE

被引：23

作者：

MAJIMA, Y

IWAMOTO, M

机构：

[1] Dept. Of Electrical and Electronic Engineering, Tokyo Institute of Technology, Tokyo, 152, 2-12-1 0-okayama, Meguro-ku

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1990年 / 29卷 / 03期

关键词：

Current measurement; Dynamics; Fatty acid; Langmuir film; LB; Monolayer;

D O I：

10.1143/JJAP.29.564

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Dynamic behavior of fatty acid monolayers at the air-water interface was investigated using a current-measuring technique, where a current-area (I-A) isotherms was monitored together with a surface pressure-area (π-A) isotherm during the compression of a monolayer at the air-water interface. In liquid phase, current I decreased at a constant rate with compression, due to a change in the vertical component of the dipole moment of fatty acid molecules. At the liquid-solid phase transition, a striking feature in the present current measurement was observed; the I-A isotherm for a stearic acid monolayer has a sharp bend. Current I increased abruptly when a monolayer collapsed. Dynamic behavior of monolayers in the presence of an external electric field was also investigated using the current-measuring technique. © 1990 The Japan Society of Applied Physics.

引用

页码：564 / 568

页数：5

共 11 条

[1] ELLIPSOMETRIC STUDIES OF ROD OUTER SEGMENT PHOSPHOLIPIDS AT THE NITROGEN WATER INTERFACE [J].