Shape optimization for high efficiency metasurfaces: theory and implementation

Metasurfaces are formed by engineering a glass surface with an array of microscopic features, or meta-atoms. Although different optical functionalities can be obtained by changing only the pattern, the resulting metasurfaces often lack the necessary efficiency for many applications. In this report, scientists from Corning and Harvard University collaborate to demonstrate an inverse-design method that optimizes efficiency while respecting fabrication constraints. These results represent a step forward in making practical metasurfaces for broader applications.

JMIR Research Protocols | Google Apple Exposure Notification System for COVID-19

JMIR Publications recently published “Dissemination and Implementation of a Google Apple Exposure Notification System for COVID-19 Risk Mitigation at a National Public University: Protocol for a Pilot Evaluation Study in a Real-World Setting” in JMIR Research Protocols which reported that this paper describes the protocol for South Carolina Safer Together, developed by Clemson University to design, deploy, and evaluate multilevel communication and dissemination and implementation (D&I) strategies in line with recommendations from governmental and educational agencies to mitigate the risk of exposure to COVID-19.