Inkless rewritable paper enabled by a scalable photochromic membrane
Rewritable paper has attracted wide research attention in the field of environment-friendly information transmission owing to its potential to promote sustainable society development. Traditional organic dye-based rewritable paper may cause emission of pollution. To solve this problem, this study presents a flexible inorganic photochromic membrane by <i>in situ</i> growth of highly dispersed Cu-doped WO<sub>3</sub> nanoparticles in a polymethyl methacrylate matrix. Obvious discoloration of the as-prepared membrane can be repeated more than 200 times under alternating UV irradiation/heating based on an oxidation-reduction process between W<sup>6+</sup> and W<sup>5+</sup>. The proof of concept for rewritable paper and encryption algorithm is demonstrated herein. The results of this study are of great significance for the design and fabrication of a novel type of rewritable colorful paper.
Authors
- Pan Jia (ORCID: https://orcid.org/0000-0001-8119-9709)
- Zhuoran Kuang (ORCID: https://orcid.org/0000-0002-1594-8107)
- Zhong Yu (ORCID: https://orcid.org/0000-0003-3244-0759)
- Rong-Wei Kou (ORCID: https://orcid.org/0000-0002-7916-5881)
- Xing Guo (ORCID: https://orcid.org/0000-0001-7212-1520)
- Jingxia Wang (ORCID: https://orcid.org/0000-0003-4780-4367)
- Tianyu Huang (ORCID: https://orcid.org/0000-0001-7045-476X)
- Chenfang Zhang
- Junchao Liu (ORCID: https://orcid.org/0000-0001-6675-2561)
Institutions
- Xi'an University of Technology (CN)
- Technical Institute of Physics and Chemistry (CN)
- University of Chinese Academy of Sciences (CN)
- Hebei Normal University (CN)
Publication Details
- Journal
- Dalton Transactions
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d5dt01957e
- Primary Topic
- Electrowetting and Microfluidic Technologies
- Type
- article
- Field-Weighted Citation Impact
- 0.00