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Research Paper

Nanofiber Plasmon Enhancement of Two-Photon Polymerization Induced by Femtosecond Laser

[+] 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), 041015 (Nov 01, 2010) (4 pages) doi:10.1115/1.4002747 History: Received August 31, 2010; Revised September 21, 2010; Published November 01, 2010; Online November 01, 2010

The nanofiber plasmon effect on the two-photon polymerization (2PP) induced by a femtosecond laser is reported for the first time in this paper. The nanofibers were generated using a femtosecond laser, which was also used to construct microfeatures through two-photon polymerization of a nanofiber dispersed polymer resin. Nanofiber plasmon resonant effect greatly enhances local field intensities, resulting in increased particle scattering cross sections. This leads to a drastic enhancement of two-photon-like absorption processes, allowing much lower incident radiation intensities to be used. The huge enhancements in local field intensity due to nanofiber plasmon resonances have been shown to lower the required intensity for 2PP by factors of 10 or more.

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Copyright © 2010 by American Society of Mechanical Engineers
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Figures

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Figure 1

SEM images of the generated silicon nanofibers using femtosecond laser irradiation

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Figure 2

Schematic of plasmon oscillation for nanofibers

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Figure 3

Computed values for scattering cross section for silicon nanoparticles in Ormocer as a function of particle diameter

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Figure 4

SEM image of voxel array fabricated by 2PP method

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Figure 5

Voxel diameter variations with laser power for reinforced polymer at 26 MHz repetition rate

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Figure 6

Effect of silicon nanofiber size on 2PP cross section for Ormocer at 1040 nm wavelength

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