High-density, high-frequency and large-scale electrohydrodynamic drop-on-demand jetting via a protruding polymer-based printhead design.

IF 7.3 1区 工程技术 Q1 INSTRUMENTS & INSTRUMENTATION Microsystems & Nanoengineering Pub Date : 2024-11-05 DOI:10.1038/s41378-024-00786-2
Yongqing Duan, Weili Yang, Qiming Wang, Zhaoyang Sun, Haoyu Guo, Zhouping Yin
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Abstract

Electrohydrodynamic (EHD) printing has critical merits in micro/nanoscale additive manufacturing because of its ultrahigh resolution and wide ink compatibility, making it an advantageous choice for electronics manufacturing, high-resolution prototyping, and biological component fabrication. However, EHD printing is currently limited by its rather low throughput due to the lack of high-frequency and high-density multi-nozzle printheads. This paper presents a novel EHD printhead with a protruding polymer-based nozzle design. An insulated, hydrophobic, and protruding polymer nozzle array with an appropriate geometric structure can effectively address key problems in multi-nozzle jetting, such as electrical crosstalk, electrical discharge, liquid flooding, and nonuniform jetting. By investigating the influence of the electrical and geometric characteristics of the nozzle arrays on the electrical crosstalk behavior and fabricating the optimized nozzle array via MEMS technology, we achieve an EHD printhead with a large scale (256), high density (127 dpi), and high jetting frequency (23 kHz), and addressable jetting can be realized by adding independently controllable extractors underneath the nozzle array. Many functional materials, such as quantum dots, perovskite, and nanosilver inks, can be ejected into high-resolution patterns through the optimized nozzle array, demonstrating the great prospects of our designed printhead in electronics manufacturing. This MEMS-compatible printhead design lays the foundation for high-throughput fabrication of micro/nanostructures and promotes practical applications of EHD printing in functional electronics and biomedical/energy devices.

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通过基于聚合物的突出式喷头设计,实现高密度、高频率和大规模按需滴电流体动力喷射。
电流体动力(EHD)打印因其超高的分辨率和广泛的油墨兼容性,在微米/纳米级增材制造领域具有重要优势,是电子制造、高分辨率原型和生物组件制造的有利选择。然而,由于缺乏高频率、高密度的多喷嘴打印头,EHD 打印目前受限于其相当低的吞吐量。本文介绍了一种基于聚合物喷嘴设计的新型 EHD 打印头。具有适当几何结构的绝缘、疏水和突出聚合物喷嘴阵列可有效解决多喷嘴喷射中的关键问题,如电串扰、放电、液体淹没和不均匀喷射。通过研究喷嘴阵列的电气和几何特性对电气串扰行为的影响,并通过 MEMS 技术制造出优化的喷嘴阵列,我们实现了大尺度(256)、高密度(127 dpi)和高喷射频率(23 kHz)的 EHD 喷头,并通过在喷嘴阵列下方添加独立可控的提取器实现了可寻址喷射。许多功能材料,如量子点、过氧化物和纳米银墨水,都可以通过优化的喷嘴阵列喷射出高分辨率图案,这表明我们设计的喷头在电子制造领域具有广阔的应用前景。这种兼容 MEMS 的打印头设计为高通量制造微/纳米结构奠定了基础,并促进了 EHD 打印在功能电子器件和生物医学/能源设备中的实际应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Microsystems & Nanoengineering
Microsystems & Nanoengineering Materials Science-Materials Science (miscellaneous)
CiteScore
12.00
自引率
3.80%
发文量
123
审稿时长
20 weeks
期刊介绍: Microsystems & Nanoengineering is a comprehensive online journal that focuses on the field of Micro and Nano Electro Mechanical Systems (MEMS and NEMS). It provides a platform for researchers to share their original research findings and review articles in this area. The journal covers a wide range of topics, from fundamental research to practical applications. Published by Springer Nature, in collaboration with the Aerospace Information Research Institute, Chinese Academy of Sciences, and with the support of the State Key Laboratory of Transducer Technology, it is an esteemed publication in the field. As an open access journal, it offers free access to its content, allowing readers from around the world to benefit from the latest developments in MEMS and NEMS.
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