gradient index

De-‘SCRIBE’-ing improvements—researchers refine procedure for printing gradient refractive index optics

By Lisa McDonald / June 2, 2023

Significant progress in creating optics with nonuniform (gradient) refractive indices has been made over the past two decades. In 2020, researchers at the University of Illinois Urbana-Champaign proposed a unique way to use direct laser writing to achieve even greater control over the refractive index. A new open-access paper details refinements to their so-called SCRIBE method.

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Light-powered 3-D printing technique creates new terahertz lens for better security imaging

By Stephanie Liverani / May 3, 2016

Engineers at Northwestern University’s McCormick School of Engineering (Evanston, Ill.) are working on a new lens that could be used for biomedical research and security imaging: a terhertz lens created by a light-powered 3-D printer.

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