气溶胶喷墨打印工艺参数对图案精度的影响北大核心

以商业纳米银颗粒墨水为打印材料,以钠钙玻璃为衬底材料,采用气溶胶喷墨打印工艺在衬底上打印形成银线。在搭建的气溶胶喷墨打印平台上,通过改变工艺参数探究不同工艺参数对银线线宽的影响规律。通过激光共聚焦显微镜对打印图案进行测量与观察发现：增大环绕气体流量、减小输送气体流量可以降低银线线宽;增大气体流量比可以在减小打印线宽的同时减小铺展现象,但会出现卫星液滴问题与沉积空洞现象;提高打印速度也可以有效抑制铺展现象;最后在钙钠玻璃衬底形成了平均电阻率为24.93μΩ·cm的导电金属电极图案。     

透视喷墨打印机墨水

墨水是喷墨打印机的一种主要耗材。喷墨打印机用墨水不同于一般的书写墨水,它要求有很高的热稳定性和化学稳定性。要求粘度适中,具有浓度高、分子量小、流动性好、图像层次分明等性能。从喷墨打印机的组成看,主要材料是溶剂和着色剂,还要添加抗氧化剂、粘度调节剂等。溶剂在喷墨打印机墨水中所占的比重最大,直接影响墨水的物理和化学性质以及打印质量、稳定性等。但喷墨打印机的墨水种类是按照墨水中的着色剂分类的。着色剂的性能直接影响打印图像的色彩和色调,其自身的颜色、混合性能、溶解性、酸碱性、颗粒度大小尤为重要。彩色喷墨打印主要采用混色喷墨技术中的减色混色法,采用黄、蓝、洋红等补色着色剂。由于采用减色混色法生成的黑色看起来不够黑,为了获得纯黑色以提高打印质量,还增添了黑色。由各     

EVD带给我们什么？

照片级喷墨打印机因其良好的打印效果与较低的价位而占领了广大中低端市场,照片级喷墨打印机还具有更为灵活的纸张处理能力。那么如何才能选到一台称心如意的打印机呢? 一、打印机综述在打印介质上喷墨打印机具有一定的优势:既可以打印信封、信纸等普通介质,还可以打印各种胶片、照片纸、T恤、转印纸等特殊介质。照片级喷墨打印机按工作原理可分为固体喷墨和液体喷墨两种,而液体喷墨方式又可分为气泡式(CANON和HP采用)与液体压电式(EPSON采用)。气泡式(Bubble Jet)是通过加热喷嘴,使墨水产生气泡,喷到打印介质上。液体压电式是利用晶体加压时放电的特性,在常温状态下稳定地将墨水喷出。目前,爱普生、惠普、佳能三家公司生产的液体喷墨打印机代表市场的主流产品,在技术方面各有所长。     

喷墨打印像素化蓝光OLED器件

喷墨打印作为一种工序简单、低成本、无掩模、非接触、承印基板和墨水材料选择广的数字化制备工艺,广泛应用于多种领域.利用喷墨打印技术,以PEDOT∶PSS为空穴注入层,PF-SO为发光层,并蒸镀Ba和Al电极,实现像素化蓝光OLED器件的制备.通过精确调控打印喷头驱动参数调整墨滴喷射特性,并调控墨水张力、粘度等参数,获得平...     

HP DeskJet 810C

惠普这款DeskJet 810C喷墨打印机,采用HP二代智能色彩打印技术,其打印品质黑白在600dpi,彩色打印品质为“富丽图”二代技术。墨盒采用四色双墨盒,黑色一个和彩色一个。彩色只要其中一个墨水没有了,就必须整组更换,不能像换黑色墨盒一样,只取出那个没墨水     

喷墨机省墨有招

喷墨打印机是打印机市场的主体产品之一,因其比针式和激光打印机价格低廉,使它更适合于家庭个人使用,但喷墨机的墨水价格不菲,这无疑提高了打印成本。以爱普生EPSON—300型打印机为例,按正常的打印设置,一盒黑色墨水能打A4幅文档300余张,若一盒墨水价格以110元     

高精度数码喷墨打印技术及在印刷电子上的应用

文章介绍了高精度数码喷墨打印技术的设备,材料和打印工艺及其在印刷电子上的应用。重点介绍了纳米银墨水的结构、性能、烧结条件和电性能以及打印性能及其在制备导电线路上的应用,探讨了喷头孔径及基材的表面性能对打印线路的影响。最后,介绍了挠性PCB的打印。     

MDP打印方式与众不同

纵观当今打印机世界，传统的针式打印机已逐渐为喷墨、激光打印机所代替。激光打印机在目前的情况下能实现高质量黑白文本打印，但是彩色打印成本过于昂贵，喷墨打印机经过不断的开发和完善，打印质量比针打有相当的提高，而且价格也已能被接受。但是现有喷墨方式靠喷嘴喷出的水溶性墨水，会因打印纸张的质量产生不同程度的渗水、颜色不均、褪色等问题，对纸张的要求过于苛刻。ＰＥＶＲＯＤＰ１２００ＭＤ彩色打印机采平了ＭＤＰ这一全新的打印技术．代表着彩色打印的趋势，它包括三个关键的技术。第一是打印头。过去，作为打印头的基板材料…     

各厂商的省墨技术：

惠普 1．惠普最新的喷墨打印机均采用了SPT系统人性化的墨水传感器检测墨水量功能，可以精确计算墨水剩余情况，并通过预先提示的方式防止打印中途墨水耗尽，这也避免了浪费纸张和时间。     

数字化文字喷印及其在PCB生产中应用

目前,数字喷墨打印技术正成为一种多样化替代传统化学蚀刻工艺直接成图的手段。配备有最新压电式喷头和UV曝光装置的前沿工业级喷墨打印机允许终端用户直接打印和固化UV墨水形成所需图形。在PCB工业中,省却传统丝印技术中的图形生成、图形转移、曝光和显影等工艺步骤已经可以实现,而且随之带来的设备、材料及工时的下降意味着更低的生产成本。文章将简介汉印科技公司对这种工业级商用打印机开发和可能应用。     

Multi-Material Aerosol Jet Printing of Al/Cuo Nanothermites for Versatile Fabrication of Energetic Antennas

In the present study, a nanoscale Al/CuO thermite system is patterned using a multi-material aerosol jet printing technology. Morphological analysis of samples manufactured with different printing configurations reveal a strong effect of the printhead design on microstructure and degree of mixing between the constituent materials, providing insight on fundamental mechanisms of inline aerosol-phase mixing during printing. The high-resolution patterning capability of aerosol jet printing is leveraged to fabricate both blended nanoscale Al/CuO thermites and antennas containing the nanothermite, which exhibit rapid and low-energy ignition upon exposure to a 2.45 GHz free space electromagnetic field, characterized by an ignition delay of ≈130 ms and ignition energy of ≈216 J. Moreover, the versatility of this approach is demonstrated by manufacturing compositionally graded samples, establishing multi-material aerosol jet printing as a compelling and versatile platform for microscale energetic device fabrication with broader utility for graded materials. This work shows promise for use of the technique for in situ manufacturing of standalone and integrated energetics and electromagnetic devices.     

Additive Manufacturing of Batteries

Additive manufacturing, i.e., 3D printing, is being increasingly utilized to fabricate a variety of complex‐shaped electronics and energy devices (e.g., batteries, supercapacitors, and solar cells) due to its excellent process flexibility, good geometry controllability, as well as cost and material waste reduction. In this review, the recent advances in 3D printing of emerging batteries are emphasized and discussed. The recent progress in fabricating 3D‐printed batteries through the major 3D‐printing methods, including lithography‐based 3D printing, template‐assisted electrodeposition‐based 3D printing, inkjet printing, direct ink writing, fused deposition modeling, and aerosol jet printing, are first summarized. Then, the significant achievements made in the development and printing of battery electrodes and electrolytes are highlighted. Finally, major challenges are discussed and potential research frontiers in developing 3D‐printed batteries are proposed. It is expected that with the continuous development of printing techniques and materials, 3D‐printed batteries with long‐term durability, favorable safety as well as high energy and power density will eventually be widely used in many fields.     

Metal aerosol jet printing for solar cell metallization

Metal aerosol jet printing is a new non‐contact direct‐write technique for the front side metallization of highly efficient industrial silicon solar cells. With this technique the first layer of a two‐layer contact structure is created. It features a low contact resistance and good mechanical adhesion to the silicon surface. The second layer is formed by light‐induced silver plating (LIP) to increase the line conductivity. To form the first layer a metal‐containing aerosol is created in the printer and focused via a second surrounding gas stream through a nozzle and deposited onto the substrate. The focussing gas avoids the contact between the aerosol and the nozzle tip. In addition, line widths significantly smaller than the outlet diameter of the nozzle tip can be reached. Fine and continuous lines with a width of 14 µm were printed using a metal organic ink. As the adhesion of these layers was not sufficient, a commercially available screen‐printing paste for solar cell metallization was modified and tested. Monocrystalline silicon solar cells of 12·5 cm × 12·5 cm with an aluminum back surface field were processed, achieving energy conversion efficiencies up to 17·8%. Copyright © 2007 John Wiley & Sons, Ltd.     

Combining laser chemical processing and aerosol jet printing: a laboratory scale feasibility study

First results showing the viability of combining laser chemical processing (LCP) and aerosol jet printing (AJP) technologies to produce a high‐efficiency front side for silicon solar cells are presented. LCP simultaneously opens the anti‐reflection coating (ARC) and highly dopes the underlying silicon to create a selective emitter, while AJP is the first in a two‐step fine‐line contact formation procedure. The electrical properties as well as the morphology of the resulting structures are presented. Performance similar to that achieved with evaporated TiPdAg metallization is demonstrated. Copyright © 2010 John Wiley & Sons, Ltd.     

一种新型焊膏喷印技术

焊膏印刷是SMT/表面组装技术的核心工艺,其加工质量的优劣关系到后序组装、回流焊、封装及产品整体性能。文章首先介绍了通过金属箔掩模版、激光打孔不锈钢掩模版进行焊膏丝印的技术,并介绍了国外研发成功的一种焊膏喷印新技术。同时,对两种工艺技术的原理、特点和优势进行了详细比较。当前微电子业界焊膏网印过程中,一般大量使用丝网印刷来获取高质量的焊膏图形,但多种硬件参数、操作员个人经验因素等综合因素会影响到最终加工效果。比较而言,焊膏喷印方式自动化程度高,可有效缩短焊膏图形最终加工结果与焊膏喷印软件中预计效果间的差距。     

喷印设备偏心轴对喷印效果影响

全印制电子技术作为一种高效、低耗、节能、环保的工艺技术,成为业内人士关注的焦点,喷墨打印技术是全印制电子的核心工艺技术之一。我公司在研发喷印设备中,喷头采用双排错位实现了喷印图形的完整性。此过程中,出现奇偶排喷头喷印图形交替错位现象。本文对交替错位情况,建立了偏心轴模型,采用数学方法对其进行分析、研究,已成功解决奇偶排喷头喷印图形交替错位问题。     

A desktop electrohydrodynamic jet printing system

This paper discusses the design and integration of a desktop system for electrohydrodynamic jet (E-jet) printing. E-jet printing is a micro/nano-manufacturing process that uses an electric field to induce fluid jet printing through micro/nano-scale nozzles. This enables better control and resolution than traditional jet-printing processes. The printing process is predominantly controlled by changing the voltage potential between the nozzle and the substrate. The push to drive E-jet printing towards a viable micro/nano-manufacturing process has led to the design of a compact, cost effective, and user friendly desktop E-jet printing system. The hardware and software components of the desktop system are described in the paper. Experimental results are presented to validate the performance of the system.     

有机电致发光器件中有机薄膜的制备方法

有机电致发光器件中有机薄膜的制备方法非常重要,不同方法制备的薄膜质量不同,这直接影响着器件的效率;制备方法直接影响到产业化中的器件制备成本。根据材料的不同,有机小分子常用真空蒸镀的方法,而高分子材料常用旋涂的方法制备薄膜。随着有机电致发光器件制备工艺的发展,相继出现了其他的制备工艺,如:有机蒸汽喷印(organic vapor jet printing)、有机气相沉积(organic vapor phase deposition)、丝网印刷(screen printing)和喷墨打印(ink jet printing)技术等,这对有机电致发光显示器产业化发展具有巨大的推动作用。文章综述了这些制备方法,比较了它们的优缺点,以及这些工艺对产业化的影响。     

Electrohydrodynamic Jet Printing Driven by a Triboelectric Nanogenerator

Electrohydrodynamic jet (e‐jet) printing is a high‐resolution printed electronics technique that uses an electric field to generate droplets. It has great application potential with the rapid development of flexible and wearable electronics. Triboelectric nanogenerators (TENG), which can convert mechanical motions into electricity, have found many high‐voltage applications with unique merits of portability, controllability, safety, and cost‐effectiveness. In this work, the application of a TENG is extended to printed electronics by employing it to drive e‐jet printing. A rotary freestanding TENG is applied as the high‐voltage power source for generating stable ink droplet ejection. The TENG‐driven droplet generation and ejection process and printed features with varied operation parameters are investigated. Results reveal that the jetting frequency could be controlled by the TENG's operation frequency, and high‐resolution printing with feature size smaller than nozzle size is achieved using the setup. Notably, TENG as the power source for e‐jet printing supplies a limited amount of current, which leads to better safety for both equipment and personnel compared to conventional high‐voltage power supplies. With the superiority of TENG in the sense of safety and cost, the work presents a promising solution for the next‐generation of high‐resolution printed electronics and broadens the scope of TENG application.     

压电驱动微型喷雾器的研究

研究开发了一种压电驱动微型喷雾器。利用微机械加工技术,制作微米级的喷孔阵列,基于喷墨打印机原理,微喷换能器采用压电驱动方式在其较高阶谐振状态下工作。实验分析了这种微喷换能器的阻抗特性、谐振状态下振动特性以及微型喷雾器的工作性能。实验结果表明,这种喷雾器喷出的雾滴直径大小集中,工作稳定且容易控制喷雾量。