Name: high-resolution patterning using two modes of electrohydrodynamic jet: drop on demand and near-field electrospinning
Uploaded: 2018-07-10T14:00:00
Description: Watch this Scientific Journal Video about High-resolution Patterning Using Two Modes of Electrohydrodynamic Jet: Drop on Demand and Near-field Electrospinning at JoVE.com

这项研究得到了由教育部 (2016R1D1A1B01006801) 资助的韩国国家研究基金会 (NRF) 的基础科学研究项目的支持, 并得到了 Soonchunhyang 大学研究基金的部分支持。.

为了健康和安全起见, 在使用任何墨水和清洁解决方案之前, 请参阅材料安全数据表 (MSDS)。
1. 按需 Electrohydrodynamic 喷墨印花用银纳米粒子墨水
<ol><li>将经过过滤的银纳米微粒 (AgNP) 墨水填充在 EHD 印刷系统的墨水库中。 注: 市面上可用的 AgNP 墨水可用于喷墨用途。该油墨应具有约 10 cP 的粘度和表面张力为 20 ~ 40 锰/米, 以获得需求下降喷射。</li>
	<li>使用热拉拔器制作用于国...

<ol>
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Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Investigation+of+pulse+voltage+shape+effects+on+electrohydrodynamic+jets+using+a+vision+measurement+technique.">Investigation of pulse voltage shape effects on electrohydrodynamic jets using a vision measurement technique.</a> Journal of Micromechanics and Microengineering. 23 (6), (2013).</li><li>Chen, C. H., Saville, D. A., Aksay, I. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Scaling+laws+for+pulsed+electrohydrodynamic+drop+formation.">Scaling laws for pulsed electrohydrodynamic drop formation.</a> Applied Physics Letters. 89, (2006).</li><li>Sung, K., Lee, C. 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S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+high+speed+electrohydrodynamic+(EHD)+jet+printing+method+for+line+printing.">A high speed electrohydrodynamic (EHD) jet printing method for line printing.</a> Journal of Micromechanics and Microengineering. 27, (2017).</li><li>Teo, W. E., Ramakrishna, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+review+on+electrospinning+design+and+nano+fiber+assemblies.">A review on electrospinning design and nano fiber assemblies.</a> Nanotechnology. 17, R89-R106 (2006).</li><li>Tang, Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Highly+relective+nanofiber+films+based+on+electrospinning+and+their+application+on+color+uniformity+and+luminous+efficacy.">Highly relective nanofiber films based on electrospinning and their application on color uniformity and luminous efficacy.</a> Optics Express. 25, 20598-20611 (2017).</li><li>Huebner, G., Zapka, W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Comparing+inkjet+with+other+printing+processes+and+mainly+screen+printing.">Comparing inkjet with other printing processes and mainly screen printing.</a> Handbook of Industrial Inkjet Printing - A Full System Approach. 1, 7-22 (2018).</li><li>Li, M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Electrospun+protein+fibers+as+matrices+for+tissue+engineering.">Electrospun protein fibers as matrices for tissue engineering.</a> Biomaterials. 26, 5999-6008 (2005).</li><li>Bhardwaj, N., Kundu, C. 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在本协议中, 我们将重点放在使用 AgNP 墨迹打印精细图案的两种模式: DOD EHD 打印和 NFES。然而, EHD 喷墨印花的应用并不局限于使用 AgNP 的导电油墨。在这里, 我们将讨论的一般准则, 选择的墨水, 系统配置, 和其他打印参数需要使用 EHD 喷墨打印的各种精细模式的应用。
EHD 印刷的第一个也是最重要的步骤是油墨的选择和准备。传统喷墨印花中使用的墨水可用于国防部 EHD 印刷。?...

EHD 喷墨印花已广泛应用于各种领域, 如印刷电子、生物技术和先进材料应用, 因为它能够高分辨率和低成本直接模式1。印制线宽度或印刷网点尺寸可降至1µm, 大大小于传统的压电式喷墨打印1。
在 EHD 印刷中, 一小部分墨水 (或半月板) 被推出喷嘴尖端, 并通过控制流速1、2、3、4、5或正气压1来维持. ,6,7。挤出半月板是充电, 可以很容易地从喷嘴尖端拉到基板的电场, 如图 1所示。锥形半月板在喷射过程中形成, 产生比喷嘴尺寸更薄的墨流。
<img alt="Figure 1" class="xfigimg" src="/files/ftp_upload/57846/57846fig1.jpg"> 图 1: EHD 打印.图中显示了 EHD 喷墨打印的原理。墨水通过压力推挤并且通过电场拉扯从喷嘴形成一个被挤出的半月板。然后, 带电的墨水可以很容易地通过直流或脉冲电压喷射到基板。<a href="https://www.jove.com/files/ftp_upload/57846/57846fig1large.jpg" target="_blank">请单击此处查看此图的较大版本.</a>
尽管单 EHD 打印机可用于两种不同的模式, 近场静电纺丝 (NFES) 和需求下降 (DOD) EHD 喷墨打印, 实现方法在油墨, 射流系统和驱动电压方面有显著差异1,2,3. 例如, NFES4、5使用相对高粘度的墨水 [超过 1000 centipoises (cP)] 形成连续的微线图案, 高速打印可达1米/秒。另一方面, 国防部 EHD 喷墨打印6,7,8使用低粘性墨水与粘度约 10 cP, 以打印点为基础的复杂模式, 低打印速度小于10毫米/秒。
由于对每种模式的要求都有很大的不同, 对缺乏经验的研究人员来说, 达到预期的结果可能会有挑战性。经验上的 "专门知识" 在实践中可能很重要。为了帮助研究人员习惯于印刷方法, 我们提出了用银纳米粒子墨水进行精细导电图案的 EHD 印刷协议。然而, 我们增加了对协议的评论, 使它们不限于使用银纳米粒子墨水的导电图案。最后, 讨论部分介绍了打印和准备指南。

<table border="0" cellpadding="0" cellspacing="0" width="696">
	<tbody>
		<tr height="23">
			<td height="23" style="height:23px;width:216px;">EHD integrated printing system</td>
			<td style="width:195px;">Psolution Ltd., South Korea</td>
			<td style="width:119px;">PS300</td>
			<td style="width:167px;"></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Harima Ag Nanoparticle ink</td>
			<td style="width:195px;">Harima Inc., Japan</td>
			<td style="width:119px;">Harima NPS-JL</td>
			<td>Ag solid content: ~ 53 wt%, Viscosity: ~10 cP, Surface tension: ~30 mN/m</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">Glass capillary</td>
			<td style="width:195px;">Narishige Scientific Instrument Lab</td>
			<td style="width:119px;">G-1</td>
			<td>Inner diameter: 1 mm; Used to make nozzle for DOD EHD jet printing using thermal puller</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Nozzle thermal puller</td>
			<td style="width:195px;">Sutter Instrument, USA</td>
			<td style="width:119px;">Sutter P-1000</td>
			<td></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">Microscope Slides (Glass subtrate)</td>
			<td style="width:195px;">Paul-Marienfeld &#38; Co.KG, Germany</td>
			<td style="width:119px;">10 006 12</td>
			<td>Dimension (L x W x T): 76 mm x 26 mm x 1 mm</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">Magnetic Stirrer</td>
			<td style="width:195px;">Barnstead Thermolyne Corp., USA</td>
			<td style="width:119px;">Cimarec SP131635</td>
			<td></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">Vortex Stirrer</td>
			<td style="width:195px;">Jeiotech, South Korea</td>
			<td style="width:119px;">Lab Companion VM-96T</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Ag nanopaste&#160;</td>
			<td style="width:195px;">NPK, South Korea</td>
			<td style="width:119px;">ES-R001</td>
			<td>Ag solid content: ~85.5 wt%, Viscosity: ~11000 cP</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Poly ethylene oxide (PEO)</td>
			<td style="width:195px;">Sigma-Aldrich, USA</td>
			<td>372773-500G</td>
			<td>Mw = 400000</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Ethanol</td>
			<td style="width:195px;">Sigma-Aldrich, USA</td>
			<td>459836-500ML</td>
			<td></td>
		</tr>
	</tbody>
</table>

high-resolution patterning using two modes of electrohydrodynamic jet: drop on demand and near-field electrospinning

Electrohydrodynamic (EHD) 喷墨打印在各个领域引起了广泛的关注, 因为它可以作为一种高分辨率、低成本的直接图形工具。EHD 印刷使用射流供应商, 以保持挤出的半月板, 通过推动墨水出喷嘴尖端。然后用电场将半月板拉到基板上以产生高分辨率的图案。EHD 印刷的两种模式被用于精细模式: 连续近场静电纺丝 (NFES) 和基于点的需求下降 (DOD) EHD 印刷。根据印刷方式, 对印刷设备和油墨黏度的要求将有所不同。尽管采用单 EHD 打印机可以实现两种不同的模式, 但在油墨、射流系统和驱动电压方面, 实现方法有显著差异。因此, 如果不正确理解射流的要求和限制, 就很难取得预期的结果。本文的目的是提出一个指导方针, 使经验不足的研究人员可以减少试验和错误的努力, 使用 EHD 喷气机的具体研究和开发目的。为了演示精细模式的实现, 我们使用 Ag 纳米粒子墨水来实现协议中的导电模式。此外, 我们还提出了通用的印刷准则, 可用于其他类型的墨水为各种精细模式的应用。

基于点的按需打印: 国防部印刷是基于一滴喷射每一个喷射触发器。要生产国防部喷射, 应使用粘度约为 10 cP 的低粘性墨水。EHD 国防部印刷的墨水要求与传统的国防部喷墨打印机的需求相似, EHD 印刷方法与传统的国防部喷墨打印法是一样的。在传统的喷墨打印中, 光栅印刷技术被广泛应用, 因为它适用于使用多喷嘴头的位图图像打印。然而, 在 EHD 喷墨打印的...

Watch this Scientific Journal Video about High-resolution Patterning Using Two Modes of Electrohydrodynamic Jet: Drop on Demand and Near-field Electrospinning at JoVE.com

High-resolution Patterning Using Two Modes of Electrohydrodynamic Jet: Drop on Demand and Near-field Electrospinning

采用两种 Electrohydrodynamic 射流的高分辨率模式: 需求下降和近场静电纺丝

在这里, 我们提出了一个协议, 以产生高分辨率导电模式使用 electrohydrodynamic (EHD) 喷墨打印。该协议包括两种 EHD 喷墨打印模式: 连续近场静电纺丝 (NFES) 和基于点的需求下降 (DOD) EHD 打印。

Electrohydrodynamic (EHD) jet printing has drawn attention in various fields because it can be used as a high-resolution and low-cost direct patterning ...

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