Mosallaei has Top Downloaded Article
![](https://ece.northeastern.edu/wp-content/uploads/sites/5/mosallaei2015.jpg)
ECE Associate Professor Hossein Mosallaei's article on "Truly achromatic optical metasurfaces: a filter circuit theory-based design" was one of the Top Downloaded articles from the Journal of the Optical Society of America B for September 2015.