Nanosphere lithography for device fabrication
J. Lindner, SPIE Newsroom (2013).

Metalens with convex and concave functionality
S. Zhang, X. Chen, L. Huang, B. Bai, Q. Tan, G. Jin, H. Mühlenbernd, T. Zentgraf, G. Li, C.-W. Qiu, SPIE Newsroom (2013).