Competing Liquid Phase Instabilities during Pulsed Laser Induced Self-Assembly of Copper Rings into Ordered Nanoparticle Arrays on SiO2

被引：43
|
作者：
Wu, Y. [1 ]
Fowlkes, J. D. [2 ]
Roberts, N. A. [2 ]
Diez, J. A. [3 ]
Kondic, L. [4 ]
Gonzalez, A. G. [3 ]
Rack, P. D. [1 ,2 ]
机构：
[1] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA
[2] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Nanofabricat Res Lab, Oak Ridge, TN 37831 USA
[3] Univ Nacl Ctr Prov Buenos Aires, Inst Fis Arroyo Seco, RA-7000 Tandil, Argentina
[4] New Jersey Inst Technol, Dept Math Sci, Ctr Appl Math & Stat, Newark, NJ 07102 USA
来源：
LANGMUIR | 2011年 / 27卷 / 21期
基金：
美国国家科学基金会;
关键词：
RAYLEIGH INSTABILITY; METAL-FILMS; MICROFLUIDICS; STABILITY; FLOWS;
D O I：
10.1021/la203165v
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Nanoscale copper rings of different radii, thicknesses, and widths were synthesized on silicon dioxide thin films and were subsequently liquefied via a nanosecond pulse laser treatment. During the nanoscale liquid lifetimes, the rings experience competing retraction dynamics and thin film and/or Rayleigh Plateau types of instabilities, which lead to arrays of ordered nanodroplets. Surprisingly, the results are significantly different from those of similar experiments carried out on a Si surface.(1) We use hydrodynamic simulations to elucidate how the different liquid/solid interactions control the different instability mechanisms in the present problem.
引用
收藏
页码：13314 / 13323
页数：10
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