Charge effects and nanoparticle pattern formation in electrohydrodynamic NanoDrip printing of colloids

Richner, Patrizia; Kress, Stephan J. P.; Norris, David J.; Poulikakos, Dimos

doi:10.1039/c5nr08783j

Cited by 28 publications

(34 citation statements)

References 27 publications

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“…EHD printing can overcome limitations of inkjet printing in terms of the size of nozzle arrays, the viscosity of ink, and the droplet size . EHD printing is an effective way to pattern high‐resolution patterns . Rogers and coworkers first reported EHD jet printing SWNT dots with diameter of ≈8 µm using nozzles with internal diameter of 30 µm.…”

Section: Printing Conductive Nanomaterials Inksmentioning

confidence: 99%

Printing Conductive Nanomaterials for Flexible and Stretchable Electronics: A Review of Materials, Processes, and Applications

Huang

Zhu

2019

Adv Materials Technologies

358

347

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PE has been explored for the manufacturing of flexible and stretchable electronic devices by printing functional inks containing soluble or dispersed materials, [14][15][16] which has enabled a wide variety of applications, such as transparent conductive films (TCFs), flexible energy harvesting and storage, thin film transistors (TFTs), electroluminescent devices, and wearable sensors. [17][18][19][20][21][22][23][24] The global PE market should reach $26.6 billion by 2022 from $14.0 billion in 2017 at a compound annual growth rate of 13.6%. [25] PE devices are manufactured by a variety of printing technologies. Typical printing technologies can be divided into two broad categories: noncontact patterning (or nozzle-based patterning) and contact-based patterning. The noncontact techniques include inkjet printing, electrohydrodynamic (EHD) printing, aerosol jet printing, and slot die coating, while screen printing, gravure printing, and flexographic printing are examples of the contact techniques. Each of these techniques has its own advantages and disadvantages, but they all rely on the principle of transferring inks to a substrate. Understanding the characteristics and recent advances of each printing technique is important to further the progress in PE. Moreover, to promote the lab-scale printing technologies to large-scale production process, roll-toroll (R2R) printing, which is one of the manufacturing methods to obtain large-area films with low cost and excellent durability, has drawn much attention from both industry and the research community.Nearly all of devices based on PE require conductive structures, interconnects, and contacts; therefore, highly conductive patterns, usually with high transparency and/or high resolution, fabricated by means of printing conductive materials are one of the most critical components in PE devices. Various printable conductive nanomaterials, such as metal nanomaterials (e.g., metal nanoparticles and metal nanowires) and carbon nanomaterials (e.g., graphene and carbon nanotubes (CNTs)), have been explored and used as major materials for PE. Applying printing technology to deposition of the conductive nanomaterials requires formulation of suitable inks. After depositing inks on different substrates, post-printing treatment, Printed electronics is attracting a great deal of attention in both research and commercialization as it enables fabrication of large-scale, low-cost electronic devices on a variety of substrates. Printed electronics plays a critical role infacilitating widespread flexible electronics and more recently stretchable electronics. Conductive nanomaterials, such as metal nanoparticles and nanowires, carbon nanotubes, and graphene, are promising building blocks for printed electronics. Nanomaterial-based printing technologies, formulation of printable inks, post-printing treatment, and integration of functional devices have progressed substantially in the recent years. This review summarizes basic principles and recent development of common printing technologie...

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Section: Printing Conductive Nanomaterials Inksmentioning

confidence: 99%

Printing Conductive Nanomaterials for Flexible and Stretchable Electronics: A Review of Materials, Processes, and Applications

Huang

Zhu

2019

Adv Materials Technologies

358

347

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“…Potential deagglomeration methods include the use of electric fields and nonwetting coat on the nozzle's wall. In this case, electric field or electric charge is more popular in both experiment and simulation implementation . The use of such surface treatments effectively alters the interaction between ink and nozzle's wall, and this can be captured in our MDPD simulation model by adjusting the attraction between the ink and the nozzle's wall ( A sl ).…”

Section: Resultsmentioning

confidence: 99%

“…In this case, electric field or electric charge is more popular in both experiment and simulation implementation. 3,[35][36][37] The use of such surface treatments effectively alters the interaction between ink and nozzle's wall, and this can be captured in our MDPD simulation model by adjusting the attraction between the ink and the nozzle's wall (A sl ). In this study, we vary the A sl parameter from −30 to −25 to determine the effects of reduced attraction between the ink and the nozzle's wall.…”

Section: Additional Deagglomeration Techniquesmentioning

confidence: 99%

Numerical study of surface agglomeration of ultraviolet‐polymeric ink and its control during 3D nano‐inkjet printing process

Aphinyan

Ang

Yeo

et al. 2018

J Polym Sci B Polym Phys

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There is a pressing need in very small scale three‐dimensional (3D) inkjet printing to control and reduce agglomeration, as agglomeration often leads to nozzle clogging. While agglomeration within ultraviolet ink has been studied, there has been, to our knowledge, no extensive studies conducted for surface agglomeration of the ink on nozzle's wall. This numerical study therefore focuses on investigating if surfactants can effectively control surface agglomeration during nanodroplet formation. Many‐body dissipative particle dynamics is the numerical method of choice here. We found that small amount of surfactant of about 1 wt % is sufficient to effectively reduce ink deposition on the nozzle's wall. However, by using the properties of a commercially available surfactant, sodium dodecyl sulfate, it was found that the maximum reduction achieved by its addition is only 60%. Thus, further physical or chemical deagglomeration techniques are required, and we show that by considering these other techniques, reduction of surface agglomeration to nearly 92% can be achieved. Finally, we found that adding surfactants has the additional benefit of improving total kinetic energy of the ink compositions, lowering possibility of agglomerations within the ink. It also raises the nanodroplet velocity while reducing nanodroplet breakup time, which can help speed up the process of 3D printing process. © 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2018, 56, 1615–1624

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“…In EHD jet printing, high voltage is applied between a needle and a substrate and pulls the liquid inks out of the nozzle. As a result, the drop size can be two to five orders magnitude less than the nozzle size . However, the residual charge of droplets deposited on a substrate may change the electrostatic field distribution and interrupts the subsequent printing behavior .…”

Section: Introductionmentioning

confidence: 99%

“…As a result, the drop size can be two to five orders magnitude less than the nozzle size. [25] However, the residual charge of droplets deposited on a substrate may change the electrostatic field distribution and interrupts the subsequent printing behavior. [26] Therefore, another configuration that applies AC voltage only on the substrate can also be an option.…”

Section: Introductionmentioning

confidence: 99%

Micrometer to 15 nm Printing of Metallic Inks with Fountain Pen Nanolithography

Yeshua

Layani

Dekhter

et al. 2017

Small

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The field of printed electronics is continually trying to reduce the dimensions of the electrical components. Here, a method of printing metallic lines with widths as small as 15 nm and up to a few micrometers using fountain pen nanolithography (FPN) is shown. The FPN technique is based on a bent nanopipette with atomic force feedback that acts similar to a nanopen. The geometry of the nanopen allows for rapid placement accuracy of the printing tip, on any desired location, with the highest of optical sub‐micrometer resolution. Using this nanopen, investigations of various inks are undertaken together with instrumental and script‐tool development that allows accurate printing of multiple layers. This has led to the printing of conductive lines using inks composed of silver nanoparticles and salt solutions of silver and copper. In addition, it is shown that the method can be applied to substrates of various materials with minimal effect on the dimension of the line. The line widths are varied by using nanopens with different orifices or by tailoring the wetting properties of the ink on the substrate. Metallic interconnections of conducting lines are reported.

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Charge effects and nanoparticle pattern formation in electrohydrodynamic NanoDrip printing of colloids

Cited by 28 publications

References 27 publications

Printing Conductive Nanomaterials for Flexible and Stretchable Electronics: A Review of Materials, Processes, and Applications

Printing Conductive Nanomaterials for Flexible and Stretchable Electronics: A Review of Materials, Processes, and Applications

Numerical study of surface agglomeration of ultraviolet‐polymeric ink and its control during 3D nano‐inkjet printing process

Micrometer to 15 nm Printing of Metallic Inks with Fountain Pen Nanolithography

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