Nanosecond-order long–short fluorescence lifetime switchable encryption with enlarged coding capacity

Nanophotonics

article

Teng Luo¹  Yihua Zhao¹  Ting Zhou¹  Junle Qu¹ 

[1] Center for Biomedical Photonics & College of Physics and Optoelectronic Engineering, Key Laboratory of Optoelectronic Devices and Systems, Shenzhen University

关键词: anti-counterfeiting;    fluorescence lifetime;    optical multiplexing;    photo-switch;    time-switch;   

DOI  :  10.1515/nanoph-2021-0054

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

The turn-off fluorescent photoswitches for information encryption are constantly being developed. However, there are no reports about time-switchable (fluorescence lifetime-switchable) encryption to overcome the limitations of tunable encoding numbers in spectrally and temporally encoded libraries. Based on the double-exponential fitting of fluorescence lifetime, we propose, a fatigue-free and highly flexible switch between the amplitude-weighted average fluorescence lifetime ( τm ) and the intensity-weighted average fluorescence lifetime ( τi ), which will realize the supermultiplexed fluorescence lifetime switchable encryption. The potentially enormous library of different fluorescent lifetime combinations would facilitate the development of information security.

【 授权许可】

CC BY