Ultrafast laser orthogonal alignment and patterning of carbon nanotube-polymer composite films

被引：2

作者：

Murphy, Ryan D. ^{[1
,2
]}

Abere, Michael J. ^{[2
,3
]}

Zhang, Huanan ^{[4
]}

Sun, Haiping ^{[3
]}

Torralva, Ben ^{[5
]}

Mansfield, John F. ^{[3
]}

Kotov, Nicholas A. ^{[4
]}

Yalisove, Steven M. ^{[2
,3
]}

机构：

[1] Univ Michigan, Appl Phys Program, Ann Arbor, MI 48109 USA

[2] Univ Michigan, Ctr Solar & Thermal Energy Convers, Ann Arbor, MI 48109 USA

[3] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA

[4] Univ Michigan, Dept Chem Engn, Ann Arbor, MI 48109 USA

[5] Univ Michigan, Dept Atmospher Ocean & Space Sci, Ann Arbor, MI 48109 USA

来源：

APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 20期

基金：

美国国家科学基金会;

关键词：

carbon nanotubes; filled polymers; high-speed optical techniques; laser beam effects; nanocomposites; nanofabrication; nanopatterning; polymer films; thermal expansion; RANDOM NETWORKS; ABLATION; CONDUCTIVITY; MORPHOLOGY; DYNAMICS;

D O I：

10.1063/1.4766926

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Dual orthogonal alignment of carbon nanotubes (CNTs) within the plane and perpendicular to a substrate is essential for many applications but difficult to obtain. Here, we demonstrate that it is possible using a combination of layer-by-layer deposition and ultrafast laser irradiation. Single-wall CNT-polymer composites preferentially aligned within the plane are irradiated with ultrafast laser pulses. After irradiation with distinct fluences at ambient conditions, morphology is seen where CNTs are formed into bundled CNTs with some orthogonal alignment. A model is presented to account for thermal expansion of the polymer and the formation of CNT bundles. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4766926]

引用

页数：5

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