Dynamic plasmonic colour display
Xiaoyang Duan, Simon Kamin, Na Liu

TL;DR
This paper introduces a dynamic plasmonic colour display using magnesium metasurfaces that enables multicolour printing, animations, and secure encryption through controlled hydrogenation and dehydrogenation of nanoparticles.
Contribution
It presents a novel method for dynamic plasmonic colour display with functionalities like colour tuning, erasing, and secure data encryption using catalytic magnesium metasurfaces.
Findings
Enables dynamic colour printing and tuning via hydrogenation cycles.
Achieves plasmonic animations through distinct pixel kinetics.
Provides a new approach for secure optical encryption and anti-counterfeiting.
Abstract
Plasmonic colour printing based on engineered metasurfaces has revolutionized colour display science due to its unprecedented subwavelength resolution and high-density optical data storage. However, advanced plasmonic displays with novel functionalities including dynamic multicolour printing, animations, and highly secure encryption have remained in their infancy. Here we demonstrate a dynamic plasmonic colour display technique that enables all the aforementioned functionalities using catalytic magnesium metasurfaces. Controlled hydrogenation and dehydrogenation of the constituent magnesium nanoparticles, which serve as dynamic pixels, allow for plasmonic colour printing, tuning, erasing and restoration of colour. Different dynamic pixels feature distinct colour transformation kinetics, enabling plasmonic animations. Through smart material processing, information encoded on selected…
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