RELAXATION AND THE REENTRANT APPEARANCE OF PHASES IN A MOLECULAR MONOLAYER

被引:111
作者
SCHLOSSMAN, ML [1 ]
SCHWARTZ, DK [1 ]
PERSHAN, PS [1 ]
KAWAMOTO, EH [1 ]
KELLOGG, GJ [1 ]
LEE, S [1 ]
机构
[1] HARVARD UNIV,DIV APPL SCI,CAMBRIDGE,MA 02138
关键词
D O I
10.1103/PhysRevLett.66.1599
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The structure of monolayers of CH3(CH2)22COOH on water, along approximately 21-degrees-C isotherms between 18 and 35 angstrom2/molecule, has been studied with glancing-angle x-ray diffraction and specular reflection. Following an incremental area change, in some regions of the isotherm, the diffraction pattern evolves until the surface pressure pi is relaxing less-than-or-similar-to 0.01 dyn/cm h. Reentrant behavior between tilted and nontilted phases is observed. Phase coexistence is indicated by differences between the deposited area/molecule and the area of the x-ray-determined unit cell.
引用
收藏
页码:1599 / 1602
页数:4
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