A technique to study doped ablation in polymethyl methacrylate using molecular dynamics simulation

被引：0

作者：

Conforti, Patrick F. ^{[1
]}

Prasad, Manish ^{[1
]}

Garrison, Barbara J. ^{[1
]}

机构：

[1] Penn State Univ, Dept Chem, University Pk, PA 16802 USA

来源：

APPLIED SURFACE SCIENCE | 2009年 / 255卷 / 24期

关键词：

Polymer substrate; Molecular dynamics; Polymethyl methacrylate; Laser ablation; ULTRAVIOLET-LASER ABLATION; POLY(METHYL METHACRYLATE; MODEL;

D O I：

10.1016/j.apsusc.2009.04.083

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A doped polymer substrate is studied using molecular dynamics simulations. Photons are preferentially absorbed as thermal energy by a spherical portion of a polymethyl methacrylate sample. Once sufficient energy is absorbed to fragment the polymer-labeled cluster and cleave the residual polymer bonds, ejection of material occurs indicating ablation. The mechanism of ejection is analogous to our previous work where a dopant cluster was represented using a cluster of carbon atoms [P.F. Conforti, M. Prasad, B.J. Garrison, Physical Chemistry Chemical Physics, 10 (2008) 6002]. This labeling procedure can serve as an approximate method to qualitatively explore the effects of different parameters without becoming consumed in the details of the simulation setup procedure. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：9588 / 9591

页数：4

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