Graduate student and Resnick Fellow, Andrey Vyatskikh, is a member of a research team that developed an additive manufacturing (AM) process to fabricate complex 3D architectures out of titanium dioxide (titania, TiO2), with a refractive index of 2.3 and nanosized critical dimensions. The results of this study are summarized in the publication, "Additive Manufacturing of High-Refractive-Index, Nanoarchitected Titanium Dioxide for 3D Dielectric Photonic Crystals", and notes the process can be applied to directly fabricate a broad range of 3D architectures and is not limited to TiO2. The developed AM process enables advances in 3D microelectromechanical systems (MEMS), micro-optics, and prototyping of 3D dielectric photonic crystals (PhCs).
We developed an additive manufacturing (AM) process for titanium dioxide (titania, TiO2) with ~100 nm resolution
Significance and Impact
Additive manufacturing of 3D nanoarchitected titania will enable facile fabrication of components for micro-optics, 3D MEMS, minimally invasive tools and procedures, and photocatalysis
- 120-600 nm features with <1% porosity.
- Rutile phase of nanocrystalline TiO2 w/ 120nm grain size
- Process precision allowed to fabricate 3D dielectric photonic crystals with full photonic bandgap in the infrared
A. Vyatskikh, R.C. Ng, B. Edwards, R.M. Briggs, J.R. Greer. (2020) Additive Manufacturing of High-Refractive-Index, Nanoarchitected Titanium Dioxide for 3D Dielectric Photonic Crystals. ACS Nano Letters, 20, 5, 3513–3520. DOI: https://doi.org/10.1021/acs.nanolett.0c00454
Contact: Julia R. Greer