Dynamic plasmonic color generation enabled by functional materials

Abstract

Displays are an indispensable medium to visually convey information in our daily life. Although conventional dye-based color displays have been rigorously advanced by world leading companies, critical issues still remain. For instance, color fading and wavelength-limited resolution restrict further developments. Plasmonic colors emerging from resonant interactions between light and metallic nanostructures can overcome these restrictions. With dynamic characteristics enabled by functional materials, dynamic plasmonic coloration may find a variety of applications in display technologies. In this review, we elucidate basic concepts for dynamic plasmonic color generation and highlight recent advances. In particular, we devote our review to a selection of dynamic controls endowed by functional materials, including magnesium, liquid crystals, electrochromic polymers, and phase change materials. We also discuss their performance in view of potential applications in current display technologies.

Retracted: Electrically Excited Plasmonic Ultraviolet Light Sources

“…Nevertheless, extending plasmonic properties into the UV region is dramatically difficult due to inherent interband transitions within gold and rapid oxidation of silver, which particularly degrades plasmonic properties of the entire nanostructure. [ 15 ] Alternatively, in the past decade, aluminum has been introduced as a plasmonic material that could potentially work as the metal choice for diverse technologies from colorimetric sensing [ 16 ] to plasmonic color generation [ 17 ] and UV photodetection. [ 18–21 ] In contrast to eminent noble metals that suffer from drastic s and d interband activity in the blue and violet wavelengths, the interband transitions of aluminum's bandstructure lies within a narrow energy window in the near‐infrared, owing to the sitting of the d ‐band above the Fermi energy level.…”

Tunable Metasurfaces: The Path to Fully Active Nanophotonics

“…The next logical step is toward metasurfaces that can be adjusted and reprogrammed to alter their optical properties at will, even after they have been physically created. This process has already been underway for a few years, [ 19–28 ] developing hand in hand with advancements in materials science and increasingly more sophisticated nanofabrication techniques [ 29–34 ] to produce tunable metasurfaces.…”

Laser Erasing and Rewriting of Flexible Copper Circuits

“…Reversible laser processing of nanostructured materials is expected to be an alternative solution to this proposition because it integrates the construction and reconstruction processes, which has recently attracted considerable interest in information storage, dynamic coloration, and reprogrammable functional resistance manufacturing [18][19][20][21][22]. The basic principle of these techniques is based on the interconversion of nanostructured metals and oxides, which can be controlled by varying the process parameters such as atmosphere, laser parameters, laser type, and precursor composition [19][20][21][22].…”