Dylla-Spears Rebecca, Yee Timothy D, Sasan Koroush, Nguyen Du T, Dudukovic Nikola A, Ortega Jason M, Johnson Michael A, Herrera Oscar D, Ryerson Frederick J, Wong Lana L
Lawrence Livermore National Laboratory, Livermore, CA, USA.
Sci Adv. 2020 Nov 18;6(47). doi: 10.1126/sciadv.abc7429. Print 2020 Nov.
We demonstrate an additive manufacturing approach to produce gradient refractive index glass optics. Using direct ink writing with an active inline micromixer, we three-dimensionally print multimaterial green bodies with compositional gradients, consisting primarily of silica nanoparticles and varying concentrations of titania as the index-modifying dopant. The green bodies are then consolidated into glass and polished, resulting in optics with tailored spatial profiles of the refractive index. We show that this approach can be used to achieve a variety of conventional and unconventional optical functions in a flat glass component with no surface curvature.
我们展示了一种用于制造梯度折射率玻璃光学器件的增材制造方法。通过使用带有主动在线微混合器的直接墨水书写技术，我们三维打印出具有成分梯度的多材料坯体，其主要由二氧化硅纳米颗粒和不同浓度的二氧化钛作为折射率调节掺杂剂组成。然后将坯体固结为玻璃并进行抛光，从而得到具有定制折射率空间分布的光学器件。我们表明，这种方法可用于在无表面曲率的平板玻璃部件中实现各种传统和非传统的光学功能。
