Inkjet printing of ceramic colloidal suspensions: Filament growth and breakup

Bienia, Marguerite; Lejeune, Martine; Chambon, M. Th.; Baco-Carles, Valérie; Dossou-Yovo, C.; Noguera, R.; Rossignol, Fabrice

doi:10.1016/j.ces.2016.04.015

Cited by 38 publications

(20 citation statements)

References 42 publications

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“…The suspensions used in DIP are typically much lower in solids content (typically less than about 30 to 35 vol% solids) in order to maintain a low viscosity (typically on order of 10 mPa·s @1000 s −1 ), so the suspension can flow through the nozzle at high speed. The inks for DIP require additional attributes compared to those for DIW since they need to break up into droplets, spread on the substrate and avoid forming coffee stain rings . The window of operability that enables all these attributes depends in a complex way on the suspension viscosity, density, surface tension, fluid velocity, and characteristic length scale as described by Derby …”

Section: Development Of Pastes and Inks For Additive Manufacturing (Am)mentioning

confidence: 99%

“…The inks for DIP require additional attributes compared to those for DIW since they need to break up into droplets, spread on the substrate and avoid forming coffee stain rings. 129,[197][198][199] The window of operability that enables all these attributes depends in a complex way on the suspension viscosity, density, surface tension, fluid velocity, and characteristic length scale as described by Derby. 199…”

Section: Direct Inkjet Printing (Dip)mentioning

confidence: 99%

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Colloidal processing: enabling complex shaped ceramics with unique multiscale structures

et al. 2017

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Colloidal processing of fine ceramic powders enables the production of complex shaped ceramics with unique micro and macro structures which are not possible to produce via conventional dry processing routes. Because of this enhanced structural control and shaping capabilities, colloidal processing has been exploited to produce ceramic components with ever increasing complexity and functionalities. In this review, we revisit some of the research efforts on this topic to highlight its relevance and growing importance for the advanced manufacturing of functional ceramics. Selected examples of colloidal systems with increasing level of complexity are discussed to showcase the wide range of structures that can be generated through wet processing approaches. The historical development and background knowledge pertaining to colloids and surface interactions is first briefly reviewed. The major colloidal shape forming and additive manufacturing processes that utilize colloidal pastes and inks are then reviewed, highlighting the control of suspension rheology needed in these techniques. Next, methodologies that combine suspended particles with a pore‐forming phase are discussed as a means to produce porous ceramic materials. Further control over the interactions between anisotropic particles and their alignment in suspensions can be gained via externally applied fields (such as magnetic) to produce texturally aligned green bodies. This leads to bioinspired ceramics that can programmably morph into complex shaped objects upon sintering. Hierarchical porous structures with high mechanical efficiency are also shown as an example of the multiscale designs that can be generated through advanced colloidal processing. As drying of ceramic bodies is an inevitable consequence of wet colloidal processing, the current understanding of this critical processing step is reviewed. Finally, the gaps in knowledge in these fields are discussed to provide our perspective on where the field may support advances in ceramics in the future.

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Section: Development Of Pastes and Inks For Additive Manufacturing (Am)mentioning

confidence: 99%

Section: Direct Inkjet Printing (Dip)mentioning

confidence: 99%

Colloidal processing: enabling complex shaped ceramics with unique multiscale structures

et al. 2017

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“…Dong et al 6 carried out experiments by an imaging system to analyze the main stages of DoD droplet formation. 12 Recently, Bienia et al 13 considered the droplet formation in the context of ceramic inkjet printing. In addition, the voltage waveform as an important factor could significantly influence the droplet formation dynamics 8 and droplet volume, 9 particularly for the droplet modulation with low viscosity.…”

Section: Introductionmentioning

confidence: 99%

“…A detailed review including overall aspects of DoD inkjet process was presented by Wijshoff. 12 Recently, Bienia et al 13 considered the droplet formation in the context of ceramic inkjet printing. The behaviors of filament growth and breakup were investigated and analyzed.…”

Section: Introductionmentioning

confidence: 99%

The role of wettability of nonideal nozzle plate: From drop‐on‐demand droplet jetting to impact on solid substrate

Zhang

Jia

et al. 2018

AIChE Journal

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The dynamics of drop‐on‐demand (DoD) droplet formation and subsequently impact on the solid substrate are investigated using a three‐dimensional (3‐D) multirelaxation‐time (MRT) pseudopotential lattice Boltzmann (LB) model. The wettability of nonideal nozzle plate and solid substrate is modeled by a geometric scheme within the LB framework. The dynamics of droplet formation are explored in a range of the inverse of Ohnesorge number Z=4.95, 11.57, and 28.17, and the Reynolds number Re=39.6, 58.9, and 136.4. For Z=4.95, no satellite droplet is observed and the wettability of nozzle plate greatly influences the velocity and length of jetting fluids. For Z=11.57, the filament breakup and recombination are observed. The moment of filament breakup is delayed with advancing contact angle θA increasing. For Z=28.17 with Re=136.4, the primary and satellite droplets could not be recombined with θA=30° and θA=60° which agree with the literature. Whereas with θA=90°, the recombination occurs. The dynamics of subsequent oscillating droplet impact on the substrate are similar to that of equilibrium droplet which could obtain high‐resolution printed features. Consequently, considering θA=90° with large Z and Re numbers, the printable range could be extended which could help increase the printing frequency and boost the production outputs of inkjet printing. © 2018 American Institute of Chemical Engineers AIChE J, 64: 2837–2850, 2018

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“…More recently, these studies have been extended to non-Newtonian liquids because of an increasing interest in non-Newtonian multiphase microsystems [15]. These involve physiological fluids [16] such as blood (including fibrinogen for fibrin formation [17,18]), synovial or salivary fluids [19], as well as fluid jets used in printing and spraying technology [20,21], and food emulsions [22,23]. Most of the attention has been so far devoted to the formation of non-Newtonian droplets carried by Newtonian continuous phases [24,25].…”

Section: Introductionmentioning

confidence: 99%

Droplet breakup driven by shear thinning solutions in a microfluidic T-junction

et al. 2017

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Droplet-based microfluidics turned out to be an efficient and adjustable platform for digital analysis, encapsulation of cells, drug formulation, and polymerase chain reaction. Typically, for most biomedical applications, the handling of complex, non-Newtonian fluids is involved, e.g. synovial and salivary fluids, collagen, and gel scaffolds. In this study we investigate the problem of droplet formation occurring in a microfluidic T-shaped junction, when the continuous phase is made of shear thinning liquids. At first, we review in detail the breakup process providing extensive, side-by-side comparisons between Newtonian and non-Newtonian liquids over unexplored ranges of flow conditions and viscous responses. The non-Newtonian liquid carrying the droplets is made of Xanthan solutions, a stiff rod-like polysaccharide displaying a marked shear thinning rheology. By defining an effective Capillary number, a simple yet effective methodology is used to account for the sheardependent viscous response occurring at the breakup. The droplet size can be predicted over a wide range of flow conditions simply by knowing the rheology of the bulk continuous phase. Experimental results are complemented with numerical simulations of purely shear thinning fluids using Lattice Boltzmann models. The good agreement between the experimental and numerical data confirm the validity of the proposed rescaling with the effective Capillary number.

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Inkjet printing of ceramic colloidal suspensions: Filament growth and breakup

Cited by 38 publications

References 42 publications

Colloidal processing: enabling complex shaped ceramics with unique multiscale structures

Colloidal processing: enabling complex shaped ceramics with unique multiscale structures

The role of wettability of nonideal nozzle plate: From drop‐on‐demand droplet jetting to impact on solid substrate

Droplet breakup driven by shear thinning solutions in a microfluidic T-junction

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