A Microscale 3D Printing Based on the Electric-Field-Driven Jet
A Microscale 3D Printing Based on the Electric-Field-Driven Jet
复制标题
基于电场驱动喷射的微型 3D 打印
DOI：
10.1089/3dp.2018.0154
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发表时间：
2020-02-01
影响因子：
3.1
通讯作者：
Wang, Fei
中科院分区：
文献类型：
--
作者：
Zhang, Guangming;Lan, Hongbo;Wang, Fei
提出了一种基于电场驱动（EFD）射流的微尺度三维（3D）打印技术。与传统的具有两个对电极的电流体动力学喷射打印不同，EFD喷射3D打印仅使用喷嘴电极的单个电势在喷嘴电极与基底或打印结构的顶表面之间形成电场。通过数值模拟和实验研究验证了该方法的性能和优势，包括基底的适用性、保形印刷的潜力和大尺寸3D打印。此外，针对不同粘度材料的高分辨率、高效率打印，提出了脉冲锥喷和连续锥喷两种工作模式，并利用CCD摄像机进行了实验研究。最后，几个典型的印刷结构，以证明所提出的技术的微尺度二维图案化和宏/微3D结构制造的可行性。总之，这项突破性的技术提供了一种高效率和高分辨率的3D打印技术，能够为各种墨水系统和熔融聚合物材料提供微尺度的直写，非接触和增材图案化，特别是对于多尺度和多材料增材制造。
This study presents a novel microscale three-dimensional (3D) printing based on the electric-field-driven (EFD) jet. Differing from the traditional electrohydrodynamic jet printing with two counter electrodes, the EFD jet 3D printing forms electric field between the nozzle electrode and the top surface of the substrate or printed structure only using a single potential by the nozzle electrode. The numerical simulations and experimental studies were carried out to verify the capabilities and advantages of the proposed approach, which includes the suitability of substrates, the potentials of the conformal printing, and the large size 3D printing. Besides, considering the high-resolution and high-efficiency printing of various materials with different viscosities, two working modes, including the pulsed cone-jet mode and the continuous cone-jet mode, were proposed and investigated by the CCD camera. Finally, several typical printed structures were provided to demonstrate the feasibility of the proposed technology for microscale two-dimensional patterning and macro/micro-3D structure fabrication. As a conclusion, this breakthrough technique provides a high-efficiency and high-resolution 3D printing technique enabling direct-write, noncontact, and additive patterning at microscale for a variety of ink systems and melted polymer materials, especially for the multiscale and multimaterial additive manufacturing.