Nano Archive

Self-standing aligned fiber scaffold fabrication by two photon photopolymerization

Hidai, Hirofumi and Jeon, Hojeong and Hwang, David J. and Grigoropoulos, Costas P. (2009) Self-standing aligned fiber scaffold fabrication by two photon photopolymerization. Biomedical Microdevices, 11 (3). pp. 643-652.

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Abstract

Development of materials and fabrication techniques lead the growth of three-dimensional cell culture matrices in biomedical engineering. In this work, we present a method for fabricating self-standing fiber scaffolds by two-photon polymerization induced by a femtosecond laser. The aligned fibers are 330 μm long with a diameter of 6–9 μm. Depending on the pitch of the aligned fibers, various cell morphologies are distinguished via three-dimensional images. Furthermore, the morphologies of fibroblast cells (NIH-3T3) and epithelial cells (MDCK) on the fiber scaffolds are studied to show the effect of high curvature (3–4.5 μm radii) on cell morphology. NIH-3T3 cells that contain straight pattern of actin microfilament bundles are extended and partly wrap single fibers or tend to reside between fibers. On the other hand, MDCK cells that contain circular pattern of actin microfilament bundles cover the fiber peripheral surface exhibiting high aspect ratio elongation. These results indicate that cell morphology on fiber scaffolds is influenced by the pattern of actin microfilament bundles.

Item Type:Article
Subjects:Physical Science > Nanophysics
Physical Science > Nano objects
Material Science > Nanochemistry
ID Code:5098
Deposited By:CSMNT
Deposited On:26 Aug 2010 08:09
Last Modified:26 Aug 2010 08:09

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