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Laser surface multistructuring of biocompatible materials using a microlens array and the Talbot effect

机译:使用微透镜阵列和Talbot效应对生物相容性材料进行激光表面多结构化

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摘要

Summary form only given. It has been demonstrated that cell adhesion on biocompatible materials is modified when the surface of the material is structured instead of being totally polished [1-3]. An efficient way to texture surfaces is using the foci of a microlens array and a direct write laser technique [4]. Due to the short focal length of the microlens, they can be damaged by expelled material during ablation. In previous works we have demonstrated the capability of using the Talbot effect to distance the object from the substrate to structure it, avoiding the damage of the microlens [5]. The Talbot effect consists of the repetition of the image of a periodic object, such as the foci of microlens, when it is illuminated by a coherent beam [6]. In this work, also the fractional Talbot effect will be employed to obtain the same pattern of ablation but with a reduced period [7].
机译:仅提供摘要表格。已经证明,当材料的表面结构化而不是完全抛光时,会改变生物相容性材料上的细胞粘附性[1-3]。使表面纹理化的有效方法是使用微透镜阵列的焦点和直接写入激光技术[4]。由于微透镜的焦距短,它们在烧蚀过程中会被排出的材料损坏。在以前的工作中,我们已经证明了使用Talbot效应使物体与基板保持一定距离以进行结构化的能力,从而避免了微透镜的损坏[5]。 Talbot效应包括当被相干光束照亮时,周期性对象(例如微透镜的焦点)的图像的重复[6]。在这项工作中,还将采用分数Talbot效应获得相同的消融模式,但周期缩短[7]。

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