At the university of illinois at urbanachampaign, uiuc, a high resolution technique for printing was developed and also a desktop system designed and. Coaxial nozzleassisted electrohydrodynamic printing for. Us9278522b2 high resolution sensing and control of. An electrically grounded ito substrate was positioned on a highresolution translation stage below the nozzle which was preliminarily. Mechanisms, capabilities and applications of highresolution electrohydrodynamic jet printing. Highresolution electrohydrodynamic jet printing of molten. Here, we report an electrohydrodynamic jet ejet printing method to fabricate smallmolecule oled pixels with high resolution pixel width of 5. Mechanisms, capabilities and applications of highresolution.
Ehd jet printing has been widely used in various areas, such as printed electronics, biotechnology, and advanced material applications, because it is capable of highresolution and lowcost direct patterning 1. The methods relate to sensing of an output current during printing to provide control of a process parameter during printing. Tipassisted electrohydrodynamic jet printing for highresolution. Numerical modeling of high resolution electrohydrodynamic. Onses m s, sutanto e, ferreira p m, alleyne a g and rogers j a 2015 mechanisms, capabilities, and applications of highresolution electrohydrodynamic jet. In this paper, we present an ejet printing mode capable of high speeds and independent control of the droplet size and printing frequency. At the university of illinois at urbanachampaign, uiuc, a high resolution technique. E jet electrohydrodynamic jet printing lead faculty researcher. This study describes electrohydrodynamic inkjet ejet technology for direct printing of oxide semiconductor thin film transistors tfts with high resolution minimum line width. Electrohydrodynamic ehd printing was employed here to fabricate conductive micro patterns for printed electronic devices. The nozzle is electrically connected to a voltage source that applies an electric charge to the fluid in the. A strong electric field is applied between the nozzle and the substrate, which induces charges on the surfaces of the ink meniscus.
Electrohydrodynamic jet printing ejet printing is a growing high resolution high resolution electrohydrodynamic jet printing, abstract efforts to adapt and extend graphic arts printing techniques for demanding device applications in electronics, biotechnology and microelectromechanical systems have grown rapidly in recent years. Electrohydrodynamic ehd nanodrip printing is a new high res olution printing. Highresolution acpulse modulated electrohydrodynamic jet printing on highly insulating substrates to cite this article. C and relative humidity 10% were constantly maintained during the printing process. Highresolution ejet printing with printed feature sizes in the range from. Serdar onses, jong bin lim, sooji nam, nuri oh, hojun kim, ki jun yu, jung woo lee, jae hwan kim, seung kyun kang, chi hwan lee, jungyup lee, jae ho shin, nam heon kim, cecilia leal, moonsub shim, john a. Enjets patented electrohydrodynamics i ehd jet technology has been applied for high resolution printing and coating by ejecting and atomizing ink and functional liquid using controlled electric field. A particular issue is in the simultaneous characterization of structures as they. Electrohydrodynamic ehd jet printing has a variety of benefits compared to conventional inkjet techniques, such as high resolution and the ability to work with highviscosity pastes. Conventional e jet is generally restricted to surfaces with high flatness, therefore limiting the application of e jet in research and industry. It is cost effective for small scale and highly customized feature production and it is compatible with a large range of materials. E jet printing is a nanomanufacturing process that uses electric field induced fluid jet printing through nanoscale nozzles for achieving better control and resolution than traditional jet printing processes.
Electrohydrodynamic inkjet micro pattern fabrication for printed. The ehd jet process uses the high dc voltage applied at the nozzle part to. Mechanisms, capabilities, and applications of highresolution electrohydrodynamic jet printing. Highresolution electricfielddriven jet 3d printing and. The pattern width can be ranging 4um30um depending on jetting condit. Electrohydrodynamic jet printing uses electric field energy to eject the. To the best of our knowledge, this is the first study to exploit ehd jet printing in the mscs. Highresolution patterns of quantum dots with e jet printing 28 january 2015, by nancy owano a team of 17 materials science and engineering researchers from the university of illinois at.
Here, we report an electrohydrodynamic jet e jet printing method to fabricate smallmolecule oled pixels with high resolution pixel width of 5. Electrohydrodynamic jet printing of microoptical devices. Sep 09, 2015 mechanisms, capabilities, and applications of high resolution electrohydrodynamic jet printing. Highresolution patterns of quantum dots formed by electrohydrodynamic jet printing for lightemitting diodes bong hoon kim, m.
As electrohydrodynamic jet e jet printing gains recognition as a novel, lowcost, highquality directwrite process for flexible electronics manufacturing, that has the ability to deliver print resolutions that exceed those possible by conventional thermal and. Some potential modifications are proposed to improve printing performance. High resolution electrohydrodynamic jet printing for. Highresolution patterns of quantum dots with ejet printing. Logic operations of the amplifier circuits composed of these e jet printed metal. It is expected that for reduced length scales, various forces i. Highresolution electrohydrodynamic jet printing nature.
Such methods enable the direct, additive patterning of materials with a resolution that can extend below 100 nm to provide unique opportunities not only in scientific studies but also in a range of applications that includes printed electronics, tissue. Sammons, kira barton university of michigan, ann arbor, mi 48109 mechanical engineering department abstract polycaprolactone pcl is a biocompatible and biodegradable polymer that is commonly. Electrohydrodynamic jet e jet printing is a growing printing based additive manufacturing technology for highresolution device fabrication. Articles highresolution electrohydrodynamic jet printing jangung park1, matt hardy1, seong jun kang1,2, kira barton3, kurt adair3, deep kishore mukhopadhyay3, chang young lee4, michael s. Electrohydrodynamic nanoprinting and its applications research. Ehd has been used to achieve fine structures with high aspect ratios in fields ranging from micro and. The sensing and control provides e jet printing having improved print resolution and precision compared to conventional openloop methods. Electrohydrodynamic jet printing offers advantages such as high resolution over more traditional manufacturing printing techniques, but lacks in the high throughput that is demanded by industry. Pdf highresolution electrohydrodynamic jet printing. Rogers2,b 1department of chemical and biomedical engineering, bk21 graduate program of kaist, korea advanced institute of science and technology, daejeon 305701, republic of korea. Pdf a multimaterial electrohydrodynamic jet ejet printing system. A desktop electrohydrodynamic jet printing system with integrated high resolution sensing and control sandipan mishra, kira barton, and andrew alleyne mechanical science and engineering department, university of illinois, urbana, il 61801 usa abstract this paper discusses the design and integration of a desktop system with sensing and control ca. Electrohydrodynamic jet printing ehd has emerged in recent years as one of the most competitive high resolution, noncontact additive manufacturing techniques.
Onses ms1, sutanto e2, ferreira pm3, alleyne ag3, rogers ja4. Logic operations of the amplifier circuits composed of these ejetprinted metal. Electrohydrodynamic jet ejet printing highintegrated printed circuit 100 m 300 nm 300 nm i. Highresolution electrohydrodynamic jet printing of molten polycaprolactone patrick m. Mechanisms, capabilities, and applications of high. Electrohydrodynamic jet ejet printing is a technique that uses electric fields to create fluid flow necessary to deliver ink to a substrate for highresolution high resolution electrohydrodynamic jet printing jangung park1, matt hardy1, seong jun kang1,2, kira barton3, kurt adair3, deep kishore mukhopadhyay3, chang young lee4, michael s. Highresolution acpulse modulated electrohydrodynamic jet.
Electrohydrodynamic ehd jet printing has a variety of benefits compared to conventional inkjet techniques, such as high resolution and. In this article, we explore a novel e jet printing application fabricating highresolution microoptical devices. Mar 28, 2016 based on the specific electrostatic force, enano printing system can provide you. Highresolution electrohydrodynamic inkjet printing of. Electrohydrodynamic ehdinkjet printing is a novel high resolution inkjet printing technology with the advantages of being a maskless, noncontact, directwrite and additive process.
One of the major advantages of additive manufacturing is its ability to print on already fabricated devices. Related content direct fabrication of highresolution threedimensional polymeric scaffolds using. Ehd printing offers fine pattern fabrication through additive manufacturing that has several advantages when compared to conventional lithographic techniques. Us20110187798a1 high resolution electrohydrodynamic jet.
Printing of complex patterns of inks, ranging from insulating and conducting polymers, to solution suspensions of silicon nanoparticles and rods, to singlewalled carbon nanotubes, using integrated computercontrolled printer systems illustrates some. Provided are high resolution electrohydrodynamic inkjet e jet printing systems and related methods for printing functional materials on a substrate surface. In an embodiment, a nozzle with an ejection orifice that dispenses a printing fluid faces a surface that is to be printed. High resolution patterns of quantum dots formed by electrohydrodynamic jet printing for lightemitting diodes bong hoon kim, m. The authors acknowledge the nanocemms center at university of illinois, which is funded by nsf under grant no. There are several unique challenges associated with attempting to print pure pcl. It is used in the field of micronano manufacturing for patterning of large class of.
A highresolution electrohydrodynamic jet printing system. Park ju1, hardy m, kang sj, barton k, adair k, mukhopadhyay. International journal of bioprinting is an international journal covering the technology, science and clinical application of the broadly defined field of bioprinting. Ehd jet printing can produce droplets much smaller than the size of the nozzle. Electrohydrodynamic jet printing is an additive fabrication approach that enables direct patterning of materials in liquid form with nanoscale resolution.
A is a side view, with the scale bar representing 50. This paper discusses the development of a sensing and feedbackfeedforward control system for electrohydrodynamic jet e jet printing. Articles highresolution electrohydrodynamic jet printing jangung park1, matt hardy1, seong jun kang1,2, kira barton3, kurt adair3, deep kishore mukhopadhyay3, chang young lee4. Exposure to an electric field causes mobile ions in a polarizable liquid to accumulate at the liquid surface. Electrohydrodynamics ehd micro jet printing technology has become a new method of micronano patterning and fabrication because of high resolution, good compatibility and simple structure.
Highresolutionsupporting electrohydrodynamic information jet. High aspect ratio using ehd electrohydrodynamic jet printing. Us9061494b2 high resolution electrohydrodynamic jet. Scaling laws for jet pulsations associated with high. Aug 04, 2011 provided are high resolution electrohydrodynamic inkjet e jet printing systems and related methods for printing functional materials on a substrate surface. High resolution electrohydrodynamic jet printing of molten polycaprolactone patrick m. Provided are highresolution electrohydrodynamic inkjet e jet printing systems and related methods for printing functional materials on a substrate surface. Mar 27, 2008 the results are important for recently developed high resolution ink jet printing techniques and other applications using electrohydrodynamics. Its printing resolution exceeds by about two orders of magnitude in comparison to the conventional inkjet printing systems. Highresolution electrohydrodynamic jet printing article pdf available in nature materials 610. However, inkjet printing still faces two major challenges.
Control of highresolution electrohydrodynamic jet printing. Ultrafine metal grid electrodes have the potential to overcome these problems and. The controlled patterning of microdroplets or microwires at precise positions plays an essential role in micronano device applications. Highresolution electrohydrodynamic jet printing of smallmolecule. A thin film of surface functionalized au coats the entire outer surface of the nozzle as well as interior near the tip. Electrohydrodynamic printing ejet electrohydrodynamic jet e jet printing is a high resolution printing technology where the printed liquid is driven by an electric field. View the table of contents for this issue, or go to the journal homepage for more. Electrohydrodynamic jet ejet printing has emerged as a highresolution. Tipassisted electrohydrodynamic jet printing for high.
In this context, we propose a novel and efficient method called tipassisted electrohydrodynamic ehd printing that combines the tipassisted electric field intensity enhancement effect and the highresolution capability of ehd printing. Compared with conventional jetting technologies, it can realize nanoscale high resolution characteristics based on ultrafine size droplets. This chapter will introduce this new high resolution 3d printing technique. This approach presents opportunities for further research with strong potential of applications in various fields such as printed electronics, tissue engineering, and photonic devices. Electrohydrodynamic ehd jet printing has drawn attention in various fields because it can be used as a high resolution and lowcost direct patterning tool. Electrohydrodynamic jet printing as a route to highresolution patterns of qds. Highresolution electrohydrodynamic jet printing of smallmolecule organic. Numerical modeling of high resolution electrohydrodynamic jet. In this context, we propose a novel and efficient method called tipassisted electrohydrodynamic ehd printing that combines the tipassisted electric field intensity enhancement effect and the high resolution capability of ehd printing. Electrohydrodynamic printing ejet pikul research group. This noncontact printing process is an electrostatic based ink jet print system.
Ejet printing is a micronanomanufacturing process that uses an electric. An organic small molecule, 2tbutyl9, 10bis 20naphthyl anthracene tbadn was printed as the emitting layer with controlled thicknesses and dimensions. Electrohydrodynamic jet printing e jet printing is a growing high resolution printing technology. Mechanisms, capabilities, and applications of highresolution. Suh y d, yeo j, so h m, chang w s and ko s h 2015 direct micro metal patterning on plastic substrates by electrohydrodynamic jet printing for flexible. Scaling laws for jet pulsations associated with highresolution electrohydrodynamic printing hong kyoon choi,1 jangung park,2 o ok park,1,a placid m. It enjoys the advantages of other additive manufacturing technologies, and is compatible with a large range of materials. Pdf electrohydrodynamic inkjet printing of oled pixel.
Electrohydrodynamic ehd jet printing is a high resolution printing technology. Highresolution printed metal interconnects, electrodes and probing pads for. High resolution printed metal interconnects, electrodes and probing pads for. Currently, ehd jet printing is in its infancy stage with several inherent problems to be overcome, such as low yielding rate and limitation of standoff height.
Highresolution e jet printing with printed feature sizes in the range from. We fabricated the oled devices with highresolution pixels with the minimum dimension of 5 30. Printed 3d structures can have a variety of fine patterns, such as vertical or helix. Ehd jet printing, a stateoftheart dropondemand printing technique 2325, has recently drawn substantial attention as a highresolution patterning technique in microelectronics. This study describes electrohydrodynamic inkjet e jet technology for direct printing of oxide semiconductor thin film transistors tfts with high resolution minimum line width. A vector printing method for highspeed electrohydrodynamic. Ehd printing uses a fluidic supplier to maintain the extruded meniscus by pushing the ink out of the nozzle tip. Provided are various methods and devices for electrohydrodynamic e jet printing. Electrohydrodynamic jet printing manufacturing process system designintegration abstract this paper discusses the design and integration of a desktop system for electrohydrodynamic jet e jet printing. E jet printing is a micronanomanufacturing process that uses an electric. A high speed electrohydrodynamic ehd jet printing method. The results are important for recently developed highresolution ink jet printing techniques and other applications using electrohydrodynamics. Electrohydrodynamic jet printing manufacturing process system designintegration abstract this paper discusses the design and integration of a desktop system for electrohydrodynamic jet ejet printing.
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