Swelling in organic-inorganic multilayer systems

被引:5
作者
Convertino, A
Valentini, A
De Vittorio, M
Cingolani, R
机构
[1] Univ Bari, Dipartmento Fis, Ist Nazl Fis Mat, Unita Bari, I-70126 Bari, Italy
[2] Univ Lecce, Dipartimento Sci Mat, Unita Leece, Ist Nazl Fis Mat, I-73100 Lecce, Italy
关键词
D O I
10.1063/1.121996
中图分类号
O59 [应用物理学];
学科分类号
摘要
We have investigated the swelling of organic-inorganic structures based on fluorocarbon polymer (CF2) layers sandwiched by two layers of inorganic ionic (HfO2) and inorganic covalent (CdS) materials. The swelling of the CF2 layer produces cracks on the uppermost inorganic layer. The cracks form a network of hexagonal defects with random distribution. The extension of the pattern and the mean unit size have been measured for different solvents by using a purposely developed optical profilometer. We show that the swelling phenomenon strongly depends on the polar forces between the: molecules of the solvent and those of the inorganic layers. The electric dipole moment of the solvents and the ionicity of the inorganic materials are thus the crucial parameters influencing the crack density and shape. (C) 1998 American lnstitute of Physics.
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收藏
页码:771 / 773
页数:3
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