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Updated: Mar 13, 2026

Fabrication of Large-area Free-standing Ultrathin Polymer Films
Published on: June 3, 2015
Seong Min Kim1, Joon Hyung An1, Dong Hyeon Seong1
1Department of Mechanical Engineering, Sogang University, Seoul 04107, Republic of Korea.
This study introduces a novel optical encryption film for anticounterfeiting. The film rapidly switches between opaque and transparent states using water, offering improved speed and stability over existing technologies.
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