Optimizing dimensional accuracy in two-photon polymerization: Influence of energy dose and proximity effects on sub-micrometric fiber structures

IF 10.3 1区工程技术 Q1 ENGINEERING, MANUFACTURING

Additive manufacturing Pub Date : 2025-03-26 DOI:10.1016/j.addma.2025.104735

Ianis Drobecq , Claire Bigot , Olivier Soppera , Laurent Malaquin , Bastien Venzac

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引用次数: 0

Abstract

Two-photon polymerization (2PP) is a powerful technology for achieving sub-micrometric precision in additive manufacturing, enabling the fabrication of 3D fibrillar structures with sub-micrometric fibers. This study provides an extensive study of the parameters that influence the dimensional accuracy of suspended beams, such as energy dose and proximity effects between the surrounding supportive structures and the fibers. Through systematic characterization of these parameters, we analyze the impact of spatial confinement on fiber width, height, and structural stability. Our results reveal that beyond conventional parameters like energy dose, long-range proximity effects induced by oxygen depletion and diffusion significantly influence final feature dimensions. These findings provide insights into optimizing 2PP for high-resolution, reproducible structures, advancing its application in fields where nanoscale precision is essential, such as tissue engineering and photonics.

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优化双光子聚合的尺寸精度：能量剂量和接近效应对亚微米纤维结构的影响

双光子聚合（2PP）是在增材制造中实现亚微米精度的强大技术，可以用亚微米纤维制造3D纤维结构。本研究对影响悬架梁尺寸精度的参数进行了广泛的研究，如能量剂量和周围支撑结构与纤维之间的接近效应。通过系统表征这些参数，我们分析了空间约束对纤维宽度、高度和结构稳定性的影响。结果表明，除能量剂量等常规参数外，氧耗竭和扩散引起的远程接近效应对最终特征维度有显著影响。这些发现为优化高分辨率、可重复结构的2PP提供了见解，推进了其在纳米级精度至关重要的领域的应用，如组织工程和光子学。

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来源期刊

Additive manufacturing Materials Science-General Materials Science

CiteScore

19.80

自引率

12.70%

发文量

648

审稿时长

35 days

期刊介绍： Additive Manufacturing stands as a peer-reviewed journal dedicated to delivering high-quality research papers and reviews in the field of additive manufacturing, serving both academia and industry leaders. The journal's objective is to recognize the innovative essence of additive manufacturing and its diverse applications, providing a comprehensive overview of current developments and future prospects. The transformative potential of additive manufacturing technologies in product design and manufacturing is poised to disrupt traditional approaches. In response to this paradigm shift, a distinctive and comprehensive publication outlet was essential. Additive Manufacturing fulfills this need, offering a platform for engineers, materials scientists, and practitioners across academia and various industries to document and share innovations in these evolving technologies.