Making molecular balloons in laser-induced explosive boiling of polymer solutions

被引：46

作者：

Leveugle, Elodie ^{[1
]}

Sellinger, Aaron ^{[1
]}

Fitz-Gerald, James M. ^{[1
]}

Zhigilei, Leonid V. ^{[1
]}

机构：

[1] Univ Virginia, Dept Mat Sci & Engn, Charlottesville, VA 22904 USA

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.98.216101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The effect of the dynamic molecular rearrangements leading to compositional segregation is revealed in coarse-grained molecular dynamics simulations of short pulse laser interaction with a polymer solution in a volatile matrix. An internal release of matrix vapor at the onset of the explosive boiling of the overheated liquid is capable of pushing polymer molecules to the outskirts of a transient bubble, forming a polymer-rich surface layer enclosing the volatile matrix material. The results explain unexpected "deflated balloon" structures observed in films deposited by the matrix-assisted pulsed laser evaporation technique.

引用

页数：4

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