Polar-coordinate line-projection light-curing continuous 3D printing for tubular structures

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外文摘要：3D printing techniques offer an effective method in fabricating complex radially multi-material structures.However,it is challenging for complex and delicate radially multi-material model geometries without supporting structures,such as tissue vessels and tubular graft,among others.In this work,we tackle these challenges by developing a polar digital light processing technique which uses a rod as the printing platform.The 3D model fabrication is accomplished through line projection.The rotation and translation of the rod are synchronized to project and illuminate the photosensitive material volume.By controlling the distance between the rod and the printing window,we achieved the printing of tubular structures with a minimum wall thickness as thin as 50 micrometers.By controlling the width of fine slits at the printing window,we achieved the printing of structures with a minimum feature size of 10 micrometers.Our process accomplished the fabrication of thin-walled tubular graft structure with a thickness of only 100 micrometers and lengths of several centimeters within a timeframe of just 100 s.Additionally,it enables the printing of axial multi-material structures,thereby achieving adjustable mechanical strength.This method is conducive to rapid customization of tubular grafts and the manufacturing of tubular components in fields such as dentistry,aerospace,and more.

外文关键词：

3D printingpolar coordinateline projectionlight-curingtubular structureradially multi-material structures

作者：

Huiyuan Wang、Siqin Liu、Xincheng Yin、Mingming Huang、Yanzhe Fu、Xun Chen、Chao Wang、Jingyong Sun、Xin Yan、Jianmin Han、Jiping Yang、Zhijian Wang、Lizhen Wang、Yubo Fan、Jiebo Li

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作者单位：

Key Laboratory of Biomechanics and Mechanobiology(Beihang University),Ministry of Education,Institute of Medical Photonics,Beijing Advanced Innovation Center for Biomedical Engineering,School of Biological Science and Medical Engineering,Beihang University,Beijing 100191,People's Republic of China

School of Mechanical Engineering and Automation,Beihang University,Beijing 100191,People's Republic of China

Peking University School and Hospital of Stomatology,Beijing 100081,People's Republic of China

School of Materials Science and Engineering,Beihang University,Beijing 100191,People's Republic of China

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基金：

Fundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central UniversitiesNational Natural Science Foundation of ChinaFundamental Research Funds for the Central UniversitiesBeijing Advanced Innovation Center for Biomedical Engineering

项目编号：

YWF-22-K-101YWF-23-L-805YWF-23-YG-QB-00612372106

出版年：

2024

DOI：

10.1088/2631-7990/ad3c7f

极端制造(英文)

CSTPCDEI

ISSN：

年,卷(期)：2024.6(4)