Obata, K. et al. High-aspect 3D two-photon polymerization structuring with widened objective working range (WOW-2PP). Light: Science & Applications, 2, e116 (2013).
DOI:
Obata, K. et al. High-aspect 3D two-photon polymerization structuring with widened objective working range (WOW-2PP). Light: Science & Applications, 2, e116 (2013). DOI: 10.1038/lsa.2013.72.
High-aspect 3D two-photon polymerization structuring with widened objective working range (WOW-2PP)
We developed a novel two-photon polymerization (2PP) configuration for fabrication of high-aspect three-dimensional (3D) structures
with an overall height larger than working distance of the microscope objective used for laser beam focusing into a photosensitive material. This method is based on a modified optical 2PP setup
where a microscope objective (100× high N.A.)
immersion oil and cover glass can be moved together into the photosensitive material
resulting in an effective higher and wider objective working range (WOW-2PP). The proposed technique enables the fabrication of high-aspect structures with sub-micrometer process resolution. 3D structures with a height of 7 mm are demonstrated
which could hardly be built with the conventional 2PP set-up due to refractive index mismatch and laser beam disturbances.
关键词
Keywords
femtosecond laserlarge-scale structuringlaser material processingphotochemistrytwo-photon polymerization
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