Effects of the actuation waveform on the drop size reduction in drop-on-demand inkjet printing

Aqeel, Anas Bin; Mohasan, M.; Lv, Pengyu; Yang, Yantao; Duan, Huiling

doi:10.1007/s10409-020-00991-y

Cited by 23 publications

(15 citation statements)

References 32 publications

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“…According to this model, for Z < 1, viscosity is too high and damps out the pressure pulse, whereas for Z > 10, satellite droplets form. Printability is, however, not only determined by the properties of the ink, but also by the selected printing parameters, that is, the waveform of the signal to the piezo actuators 20,21 Step 3: Compatibility and drop formation …”

Section: Description Of the Developed Ink Selection Proceduresmentioning

confidence: 99%

Ink development for the additive manufacturing of strong green parts by layerwise slurry deposition (LSD‐print)

et al. 2023

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Obtaining dense fine ceramics by the binder jetting additive manufacturing process is challenging. A slurry‐based binder jetting process, such as the layerwise slurry deposition (LSD‐print) process, can enable the printing of dense ceramic parts. This work describes a procedure to develop and qualify a suitable ink to manufacture silicon carbide green parts by LSD‐print. Not only the printability but also the compatibility of the ink with the powder bed and the effect of the binding agent on the properties of the green parts are considered. Both aspects are important to obtain high green strength, which is necessary for printing large or thin‐walled parts. Characterization methods, such as rheological and surface tension measurements, are applied to optimize three selected inks. The interplay between ink and powder bed is tested by contact angle measurements and by comparing the biaxial strength of cast and additively manufactured specimens. Out of the three binding agents tested, a polyethyleneimine and a phenolic resin have a high potential for their use in the LSD‐print of silicon carbide green bodies, whereas a polyacrylate binding agent did not show the required properties.

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Section: Description Of the Developed Ink Selection Proceduresmentioning

confidence: 99%

Ink development for the additive manufacturing of strong green parts by layerwise slurry deposition (LSD‐print)

et al. 2023

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“…It is necessary to minimize the droplet size to achieve ultrahigh refinement in advanced fabrication and combinatorial chemistry, which have been impressively demonstrated 9,10 . For example, for inkjet printing, reducing the droplet dimension can improve the printing quality and the printing resolution effectively 11 . For drug delivery, the droplet size considerably affects both the allowable routes of administration and the release rate of encapsulated compounds 12 .…”

Section: Introductionmentioning

confidence: 99%

“…9,10 For example, for inkjet printing, reducing the droplet dimension can improve the printing quality and the printing resolution effectively. 11 For drug delivery, the droplet size considerably affects both the allowable routes of administration and the release rate of encapsulated compounds. 12 Therefore, it is significant to controllable fabricating ultra-tiny droplets, especially nano-pico droplets.…”

Section: Introductionmentioning

confidence: 99%

Preparation of nano‐pico droplets using an open fibrous system

Chen

Zhao

et al. 2022

Droplet

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Manipulation and dispensing of ultra‐tiny droplets have attracted extensive research attention for their applications. Current approaches for dispensing liquids normally involve the use of micronozzles and microtips, which, however, suffer from limitations of clogging, high cost, and fragility. Here, we developed a facile open fibrous system for preparing nano‐pico droplets in a facile way, where the macroscopic droplet on a micro‐/nano‐textured copper fiber could be dispersed to a number of tiny droplets by applying and removing a suitable electric potential. The on‐site tunable interfacial energy, imparted by the electrical alterable density and orientation of the water molecules on the interface, leads to fine control of the spreading and retraction of the liquid on a large scale. Meanwhile, the fibrous microporous structure promotes the splitting of the liquid film based on the domain‐limiting effect during the retracting process. As a synergistic consequence, a big droplet firstly spreads completely on the poised fiber into a thin liquid film, which was then split and retracted toward the numerous anchoring points on the textured surface by removing the potential. Consequently, a big droplet can be dispersed into numerous nano‐pico droplets in a controllable way. The strategy is applicable for versatile low‐surface‐energy liquids, offering an innovative open system for continuous preparation of nano‐pico droplets.

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“…Recently, the inkjet technique has been employed as a crucial process owing to low cost, easy-to-use, and high feasibility on flexible substrates. With outstanding figures, the inkjet print has contributed to fields of research and development such as graphical printing, manufacture, and even medicine [1][2][3][4][5]. In particular, it can eject the printing material with the setting thickness at the position and shape desired by the user without a mask, and the process time can be greatly reduced because there is no need for a vacuum process.…”

mentioning

confidence: 99%

“…The fabrication of a thin and uniform thin-film encapsulation (TFE) layer is the most demanding requirement to passivate organic monomer (MN) layers, especially in realizing for new form factor displays such as flexible and curved organic lighting diodes (OLEDs). [5,6] A TFE layer can be possible to realize the flexible display with an increase of the light extraction efficiency from active area. However, attainment of a high performance coverage is required with more elaborate efforts because the embossing shape problem so-called 'mura' may occur [7].…”

mentioning

confidence: 99%

P‐50: Inkjet Printing Design and Analysis for Thin and Uniform Organic Encapsulation Layer on OLEDs

Yoon

Song

Sung

et al. 2022

Symp Digest of Tech Papers

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Effects of the actuation waveform on the drop size reduction in drop-on-demand inkjet printing

Cited by 23 publications

References 32 publications

Ink development for the additive manufacturing of strong green parts by layerwise slurry deposition (LSD‐print)

Ink development for the additive manufacturing of strong green parts by layerwise slurry deposition (LSD‐print)

Preparation of nano‐pico droplets using an open fibrous system

P‐50: Inkjet Printing Design and Analysis for Thin and Uniform Organic Encapsulation Layer on OLEDs

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