Core‐Shell Nanostructures: Dynamic Control of Orthogonal Upconversion in Migratory Core–Shell Nanostructure toward Information Security (Adv. Funct. Mater. 14/2021)

Abstract

In article number 2009796, Bo Zhou and co-workers propose a novel simple migratory core–shell conceptual model for orthogonal upconversion. The red-to-green switchable output is easily achieved by dynamic control of the upconversion by altering the excitation wavelengths (e.g., 980/1530 nm) or using the non-steady state excitation, showing great promise in the multi-level information security.