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Nonuniform shrinkage and stretching of polymerized nanostructures fabricated by two-photon photopolymerization

Yan Li1,3, Fengjie Qi1, Hong Yang1, Qihuang Gong1,3, Xianzi Dong2 and Xuanming Duan2

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We propose a method to measure the nonuniform shrinkage and stretching of polymerized nanostructures by marking them with periodical points. The method was tested, and the results showed that suspended lines themselves shrank after fabrication, but they were also stretched due to the shrinkage of their support anchors, a phenomenon that has not been investigated much before. The extension strain was measured from the change in the separation points, which reached 75% for a 2 µm-long line with a width of 40 nm.


PACS

81.16.-c Methods of nanofabrication and processing

81.07.-b Nanoscale materials and structures: fabrication and characterization

82.35.-x Polymers: properties; reactions; polymerization

62.25.-g Mechanical properties of nanoscale systems

Subjects

Soft matter, liquids and polymers

Nanoscale science and low-D systems

Chemical physics and physical chemistry

Dates

Issue 5 (6 February 2008)

Received 3 August 2007, in final form 23 November 2007

Published 14 January 2008



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