飞秒laser双光子聚合实现厘米级超细三维打印
Centimeter-scale superfine three-dimensional printing with femtosecond laser two-photon polymerization
摘要：
如今，三维（3D）打印已被广泛用于从诸如陶瓷、金属、聚合物、半导体等广泛的材料生产几何复杂的3D结构。尽管已经证明在基于双光子聚合（TPP）的3D打印中可以实现高达~100 nm的制造分辨率，TPP的最终产品尺寸通常为毫米级，这受到高数值孔径聚焦透镜的短工作距离的限制。在这里，我们提出了一种方法的基础上同步时空聚焦（SSTF）的飞秒激光脉冲，使制造厘米级的三维结构的精细功能与TPP。我们还展示了一个各向同性的空间分辨率，它可以在~10 μ m和~40 μ m的范围内连续调谐，只需改变飞秒激光的功率，使这项技术非常灵活，易于实现。我们用这种方法制作了几个最大高度为0.6cm的中国守护狮子和一个高度为1.3cm的兵马俑。
英文摘要：
Nowadays three-dimensional (3D) printing has been widely used for producing geometrically complex 3D structures from a broad range of materials such as ceramics, metals, polymers, semiconductors, etc. Although it has been demonstrated that a fabrication resolution as high as ~100 nm can be achieved in 3D printing based on two photon polymerization (TPP), the end product size of TPP is typically on millimeter scale limited by the short working distance of high-numerical-aperture focal lens. Here we present a method based on simultaneous spatiotemporal focusing (SSTF) of the femtosecond laser pulses that enables to fabricate centimeter-scale 3D structures of fine features with TPP. We also demonstrate an isotropic spatial resolution which can be continuously tuned in the range of ~10 um and ~40 um by only varying the power of femtosecond laser, making this technique extremely flexible and easy to implement. We fabricate several Chinese guardian lions of a maximum height of 0.6 cm and a Terra Cotta Warrior of a height of 1.3 cm using this method.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
