1. Giant and Tunable Optical Nonlinearity in Single‐Crystalline 2D Perovskites due to Excitonic and Plasma Effects. Issue 29 (3rd June 2019) Authors: Abdelwahab, Ibrahim; Dichtl, Paul; Grinblat, Gustavo; Leng, Kai; Chi, Xiao; Park, In‐Hyeok; Nielsen, Michael P.; Oulton, Rupert F.; Loh, Kian Ping; Maier, Stefan A. Journal: Advanced materials Issue: Volume 31:Issue 29(2019) Page Start: n/a Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗