Glass transition and relaxation following photoperturbation in thin polymeric films

被引：34

作者：

Cristofolini, L

Arisi, S

Fontana, MP

机构：

[1] Univ Parma, INFM, I-43100 Parma, Italy

[2] Univ Parma, Dept Phys, I-43100 Parma, Italy

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.85.4912

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this letter we employ null ellipsometry on Langmuir Blodgett multilayers of a glass forming photosensitive side chain polymer to investigate both the structural changes and the related time relaxation as a function of temperature and sample thickness following isothermal optical perturbation. Below a thickness of a few layers the glassy multilayer system collapses to a smecticlike crystal. This effect is discussed in the context of the glass transition in restricted dimensionality.

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页码：4912 / 4915

页数：4

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