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Proceedings Paper

Three-dimensional microfabrication using two-photon-activated chemistry
Author(s): Stephen M. Kuebler; Brian H. Cumpston; Sundaravel Ananthavel; Stephen Barlow; Jeffrey E. Ehrlich; L. L. Erskine; Ahmed A. Heikal; D. McCord-Maughon; J. Qin; Harold Roeckel; Maria Cristina Rumi; Seth R. Marder; Joseph W. Perry
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Paper Abstract

Photochemical reactions which can be activated by the simultaneous absorption of two photons provide a means for single-step fabrication of complex 3D microstructures. These types of structures are needed for a wide range of applications, including microfluidics, electrooptics, and micro-electromechanical systems. We have shown that chromophores can be engineered to have both large two-photon absorptivities as well as an efficient means for activating chemical processes, such as radical polymerization, subsequent to the photoexcitation. Chromophores designed following this strategy two-photon-activate the radical polymerization of acrylates at lower incident laser powers than conventional UV initiators. Efficient two-photon photopolymer resins based on these chromophores were used in the fabrication of complex microarchitectures, such as photonic bandgap structures and tapered waveguides. We have devised a strategy which allows this approach to be extended to other chemical systems.

Paper Details

Date Published: 17 April 2000
PDF: 9 pages
Proc. SPIE 3937, Micro- and Nano-photonic Materials and Devices, (17 April 2000); doi: 10.1117/12.382799
Show Author Affiliations
Stephen M. Kuebler, Univ. of Arizona (United States)
Brian H. Cumpston, California Institute of Technology (United States)
Sundaravel Ananthavel, Univ. of Arizona (United States)
Stephen Barlow, California Institute of Technology (United States)
Jeffrey E. Ehrlich, California Institute of Technology (United States)
L. L. Erskine, California Institute of Technology (United States)
Ahmed A. Heikal, California Institute of Technology (United States)
D. McCord-Maughon, California Institute of Technology (United States)
J. Qin, California Institute of Technology (United States)
Harold Roeckel, California Institute of Technology (United States)
Maria Cristina Rumi, Univ. of Arizona (United States)
Seth R. Marder, Univ. of Arizona and Optical Sciences Ctr./Univ. of Arizona (United States)
Joseph W. Perry, Univ. of Arizona and Optical Sciences Ctr./Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 3937:
Micro- and Nano-photonic Materials and Devices
Joseph W. Perry; Axel Scherer, Editor(s)

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