Real three-dimensional microstructures fabricated by photopolymerization of resins through two-photon absorption.
Effective energy windows for two-photon absorption (TPA) photopolymerization of resins were investigated and, with a properly selected laser pulse energy, exquisite three-dimensional (3D) microstructures with submicrometer spatial resolution were achieved. The results show the inherent utility of TPA in the fabrication of real 3D patterns. In particular, we propose and utilize a resin pre-exposure technique by which freely movable components affixed to an axle are built, demonstrating a new application of TPA in laser microfabrication.
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Sun
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Kawakami
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Xu
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Ye
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Matuso
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Misawa
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Miwa
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Kaneko