期刊
ADVANCED MATERIALS INTERFACES
卷 9, 期 21, 页码 -出版社
WILEY
DOI: 10.1002/admi.202101963
关键词
3D ZnO nanostructures; flexible metasurface color filter; high transfer printing yield; thermal transfer printing; transfer precision
资金
- Department of Science and Technology of Guangdong Province [2020B0101030001]
- Shenzhen Science and Technology program [JCYJ20190812141803608, ZDSYS20140509142721431]
- Guangdong Provincial Innovation and Entrepreneurship Project [2017ZT07C071]
- Natural Science Foundation of Shenzhen Innovation Commission [JCYJ20200109140808088]
This work presents a facile thermal transfer printing process for solution-processed ZnO nanostructures, demonstrating its scalability and high transfer accuracy for ZnO-based metasurfaces.
This work describes a facile thermal transfer printing process for solution-processed high-quality ZnO nanostructures. Nanostructures are synthesized through patterned solution growth and transfer-printed onto a polymer substrate with an inverted configuration. Thus, the shape of the solution-processed ZnO nanostructures can be regulated to have diversified forms, clearly defined edges, and improved surface profiles. To further demonstrate the scalability of such transfer printing process, a metasurface color filter with 300 mu m x 500 mu m windmill pattern is designed and more than 300 000 nanorod units included. After the structures are transferred, the color filter can be gradually tuned by O-2 plasma treatment. Moreover, the uneven height of as-synthesized nanorods with different diameters can be evenly rescaled, implying a precise control over the vertical dimension. Lastly, an ultra-high transfer accuracy is validated with a lateral displacement of less than 7 nm. The presented work demonstrates a facile and low-cost transfer printing route toward ZnO-based metasurfaces on flexible substrates.
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