Affiliation:
1. School of Materials Science & Engineering Qilu University of Technology (Shandong Academy of Sciences) Jinan 250353 Shandong Province China
2. Key Laboratory of photochemistry Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
3. Key Laboratory of Light Field Manipulation and Information Acquisition Ministry of Industry and Information Technology and Shanxi Key Laboratory of Optical Information Technology School of Physical Science and Technology Northwestern Polytechnical University Xi'an 710129 China
Abstract
AbstractWhispering‐gallery‐mode (WGM) microcavities featuring distinguishable sharp peaks in a broadband exhibit enormous advantages in the field of miniaturized photonic barcodes. However, such kind of barcodes developed hitherto are primarily based on microcavities wherein multiple gain medias were blended into a single matrix, thus resulting in the limited and indistinguishable coding elements. Here, a surface tension assisted heterogeneous assembly strategy is proposed to construct the spatially resolved WGM hetero‐microrings with multiple spatial colors along its circular direction. Through precisely regulating the charge‐transfer (CT) strength, full‐color microrings covering the entire visible range were effectively acquired, which exhibit a series of sharp and recognizable peaks and allow for the effective construction of high‐quality photonic barcodes. Notably, the spatially resolved WGM hetero‐microrings with multiple coding elements were finally acquired through heterogeneous nucleation and growth controlled by the directional diffusion between the hetero‐emulsion droplets, thus remarkably promoting the security strength and coding capacity of the barcodes. The results would be useful to fabricate new types of organic hierarchical hybrid WGM heterostructures for optical information recording and security labels.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Shandong Province
Subject
General Chemistry,Catalysis
Cited by
2 articles.
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