Porous cage-derived nanomaterial inks for direct and internal three-dimensional printing

Tangi Aubert, Jen-Yu Huang, Kai Ma, Tobias Hanrath () and Ulrich Wiesner ()
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Tangi Aubert: Cornell University
Jen-Yu Huang: Cornell University
Kai Ma: Cornell University
Tobias Hanrath: Cornell University
Ulrich Wiesner: Cornell University

Nature Communications, 2020, vol. 11, issue 1, 1-9

Abstract: Abstract The convergence of 3D printing techniques and nanomaterials is generating a compelling opportunity space to create advanced materials with multiscale structural control and hierarchical functionalities. While most nanoparticles consist of a dense material, less attention has been payed to 3D printing of nanoparticles with intrinsic porosity. Here, we combine ultrasmall (about 10 nm) silica nanocages with digital light processing technique for the direct 3D printing of hierarchically porous parts with arbitrary shapes, as well as tunable internal structures and high surface area. Thanks to the versatile and orthogonal cage surface modifications, we show how this approach can be applied for the implementation and positioning of functionalities throughout 3D printed objects. Furthermore, taking advantage of the internal porosity of the printed parts, an internal printing approach is proposed for the localized deposition of a guest material within a host matrix, enabling complex 3D material designs.

Date: 2020
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DOI: 10.1038/s41467-020-18495-5

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