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Research Paper

Mechanical Property Enhancement of Nanocomposite Microstructures Generated by Two Photon Polymerization

[+] Author and Article Information
M. Alubaidy

Department of Mechanical Engineering, Ryerson University, 350 Victoria Street, Toronto, ON, M3N 2H8, Canadamalubaid@ryerson.ca

K. Venkatakrishnan, Abdulsalam Mahmood

Department of Mechanical Engineering, Ryerson University, 350 Victoria Street, Toronto, ON, M3N 2H8, Canada

B. Tan

Department of Aerospace Engineering, Ryerson University, 350 Victoria Street, Toronto, ON, M3N 2H8, Canada

J. Nanotechnol. Eng. Med 1(4), 041016 (Nov 01, 2010) (4 pages) doi:10.1115/1.4002749 History: Received September 26, 2010; Revised October 06, 2010; Published November 01, 2010; Online November 01, 2010

The mechanical properties of nanofiber reinforced polymer microstructures were investigated in this work by means of nanoindentation. The femtosecond laser was used to generate nanofibers on selected area on the surface of the substrate and to generate microstructures. These microstructures were formed via two photon polymerization using femtosecond laser material processing by incorporation of silicon nanofibers into Ormocer matrix. Results show that the hardness and elastic modulus of the nanocomposites have improved by 25% and 75%, respectively, with the incorporation of nanofibers using the described method, which has the potential of direct fabrication of reinforced micro-/nanostructures. The volume fraction of the generated nanofibers in the nanocomposite was calculated by using nanoindentation analysis.

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Copyright © 2010 by American Society of Mechanical Engineers
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Figure 4

Typical indentation load-displacement curves for the reinforced polymer

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Figure 3

Indentation normal force and penetration depth with time for the reinforced polymer

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Figure 2

SEM images and EDX of the fabricated microfeatures using the new method

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Figure 1

SEM image of the generated fibers on a silicon substrate surface using femtosecond laser irradiation

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