3D Printing of Emulsions and Foams into Hierarchical Porous Ceramics

Minas, Clara; Carnelli, Davide; Tervoort, Elena; Studart, André R.

doi:10.1002/adma.201603390

Cited by 428 publications

(325 citation statements)

References 35 publications

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“…One current limitation of direct foam writing is the inability to pattern out of plane spanning features, such as octet trusses. However, this technique is well-suited for printing 3D woodpile lattices composed of foam struts (43). As an alternate motif, we created 3D woodpile lattices (Fig.…”

Section: Significancementioning

confidence: 99%

Architected cellular ceramics with tailored stiffness via direct foam writing

Muth

Dixon

Woish

et al. 2017

Proc. Natl. Acad. Sci. U.S.A.

206

140

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Hierarchical cellular structures are ubiquitous in nature because of their low-density, high-specific properties, and multifunctionality. Inspired by these systems, we created lightweight ceramic architectures composed of closed-cell porous struts patterned in the form of hexagonal and triangular honeycombs by direct foam writing. The foam ink contains bubbles stabilized by attractive colloidal particles suspended in an aqueous solution. The printed and sintered ceramic foam honeycombs possess low relative density (∼6%). By tailoring their microstructure and geometry, we created honeycombs with different modes of deformation, exceptional specific stiffness, and stiffness values that span over an order of magnitude. This capability represents an important step toward the scalable fabrication of hierarchical porous materials for applications,

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Section: Significancementioning

confidence: 99%

Architected cellular ceramics with tailored stiffness via direct foam writing

Muth

Dixon

Woish

et al. 2017

Proc. Natl. Acad. Sci. U.S.A.

206

140

View full text Add to dashboard Cite

show abstract

“…Among these methods, direct ink writing (DIW) is an attractive and versatile 3D printing technology to construct multifunctional structures for the applications in various fields ranging from smart composites, 6,7 bioinspired materials, 8,9 and electron component. 17,18 This method was defined as "direct foam writing" (DFW). The inks usually possess similar rheological properties, that is, shear thinning and viscoelasticity, 12,13 to assistant the printing process.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical cellular scaffolds fabricated via direct foam writing using gelled colloidal particle‐stabilized foams as the ink

et al. 2019

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Hierarchical cellular architectures hold great potential in a vast range of applications due to their superior mechanical properties and multifunctionality. In the present work, hierarchical structures composed of porous struts patterned in the form of quadrangular and triangular honeycombs were fabricated via direct foam writing (DFW) using colloidal particle‐stabilized Al2O3‐MgO‐SiO2 foams as the ink. Hydration process of MgO and subsequent formation of colloidal Mg(OH)2 network endowed the foam ink with viscoelasticity and high storage modulus. The resulting honeycombs with ultrahigh overall porosity (95.3%) and robust compressive strength (2.5 MPa) can be readily fabricated by DFW. The current work exhibits a significant step toward the scalable production of cellular ceramics with hierarchical architecture for various applications, including tissue scaffolds, catalyst supports, thermal insulation, and lightweight structures.

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“…Recent advances demand greater functional control from them, such as the ability to control the rheology for extrusion [7] or to respond to external stimuli [8]. Different stimuli such as temperature [3], CO2 [8], magnetic fields [9], salt concentration [10] and light intensity [11] have been used.…”

Section: Introductionmentioning

confidence: 99%