
1.Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of Matter, Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, 510006 Guangzhou, China
2.International Joint Laboratory of Optofluidic Technology and System (LOTS), National Center for International Research on Green Optoelectronics, South China Academy of Advanced Optoelectronics, South China Normal University, 510006 Guangzhou, People's Republic of China
3.School of Electronic Information, University of Electronic Science and Technology of China, Zhongshan Institute, 528402 Zhongshan, China
4.ARC Centre of Excellence in Exciton Science, School of Chemistry, University of Melbourne, Parkville, VIC 3010, Australia
Guofu Zhou (guofu.zhou@m.scnu.edu.cn)
Lingling Shui (shuill@m.scnu.edu.cn)
Published:31 December 2023,
Published Online:05 December 2023,
Received:14 June 2023,
Revised:31 October 2023,
Accepted:08 November 2023
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Shen, S. T. et al. A reflective display based on the electro-microfluidic assembly of particles within suppressed water-in-oil droplet array. Light: Science & Applications, 12, 2742-2754 (2023).
Shen, S. T. et al. A reflective display based on the electro-microfluidic assembly of particles within suppressed water-in-oil droplet array. Light: Science & Applications, 12, 2742-2754 (2023). DOI: 10.1038/s41377-023-01333-w.
Reflective displays have stimulated considerable interest because of their friendly readability and low energy consumption. Herein
we develop a reflective display technique via an electro-microfluidic assembly of particles (eMAP) strategy whereby colored particles assemble into annular and planar structures inside a dyed water droplet to create "open" and "closed" states of a display pixel. Water-in-oil droplets are compressed within microwells to form a pixel array. The particles dispersed in droplets are driven by deformation-strengthened dielectrophoretic force to achieve fast and reversible motion and assemble into multiple structures. This eMAP based device can display designed information in three primary colors with ≥170° viewing angle
~0.14 s switching time
and bistability with an optimized material system. This proposed technique demonstrates the basis of a high-performance and energy-saving reflective display
and the display speed and color quality could be further improved by structure and material optimization; exhibiting a potential reflective display technology.
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