Continuous additive nanofabrication at fluid interfaces (CANFI)
Tobias Hanrath a
a Cornell University, US, Bard Hall, 214 Ithaca, NY 14850, USA, Ithaca, United States
Online Meetups
Proceedings of Online Meetup: Nanocrystals in Additive Manufacturing (AdditiveNC)
Online, Spain, 2020 May 5th - 5th
Organizer: Tangi Aubert
Invited Speaker, Tobias Hanrath, presentation 003
Publication date: 3rd May 2020

Concurrent advances in the programmable synthesis of nanostructured materials and additive 3D manufacturing have created a rich and exciting opportunity space to fabricate novel materials and devices. In particular, creating complex hierarchical device geometries from mesoporous materials presents several scientifically interesting and technologically relevant challenges. We recently showed how digital light processing of photoresponsive building block defined by an oxozirconium methacrylate cluster with 12 methacrylic acid ligands can be used to enable the creation of complex superstructures characterized by multi-level porous networks. Inspired by similarly complex 3D hierarchical mesoporous structures ubiquitous in nature, we demonstrated the fabrication of a 3D leaf as a proof of concept. We’ve subsequently extended this fabrication process to other starting materials (i.e., inks) including colloidal semiconductor nanocrystals and silica cages. Beyond the materials chemistry aspects, we also investigated how printing at fluid interfaces enables faster print speeds compared to conventional digital light processing approaches. This work demonstrates how exciting opportunity space emerging at the intersection of inorganic building blocks, mesoporous materials and 3D digital light processing opens new pathways to create functional hierarchical superstructures and devices with complex geometries.

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