Programmable directional color dynamics using plasmonics

Programmable directional color dynamics using plasmonics

Adaptive multicolor filters have emerged as key components for ensuring color accuracy and resolution in outdoor visual devices. However, the current state of this technology is still in its infancy and largely reliant on liquid crystal devices that require high voltage and bulky structural designs....

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Bibliographic Details
Published in:Microsystems & nanoengineering Vol. 10; no. 1; pp. 22 - 10
Main Authors: Kim, Gyurin, Kim, Doeun, Ko, Soeun, Han, Jang-Hwan, Kim, Juhwan, Ko, Joo Hwan, Song, Young Min, Jeong, Hyeon-Ho
Format: Journal Article
Language:English
Published: London Nature Publishing Group UK 01-02-2024
Springer Nature B.V
Nature Publishing Group
Subjects:
639/301/357/354
639/624/400/1021
639/925/927/1021
Color temperature
Conducting polymers
Engineering
Liquid crystals
Nanocomposites
Nanoparticles
Plasmonics
Structural design
Visible spectrum
Voltage
Weather
White light
Nanoparticles
Nanophotonics and plasmonics
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Summary:Adaptive multicolor filters have emerged as key components for ensuring color accuracy and resolution in outdoor visual devices. However, the current state of this technology is still in its infancy and largely reliant on liquid crystal devices that require high voltage and bulky structural designs. Here, we present a multicolor nanofilter consisting of multilayered ‘active’ plasmonic nanocomposites, wherein metallic nanoparticles are embedded within a conductive polymer nanofilm. These nanocomposites are fabricated with a total thickness below 100 nm using a ‘lithography-free’ method at the wafer level, and they inherently exhibit three prominent optical modes, accompanying scattering phenomena that produce distinct dichroic reflection and transmission colors. Here, a pivotal achievement is that all these colors are electrically manipulated with an applied external voltage of less than 1 V with 3.5 s of switching speed, encompassing the entire visible spectrum. Furthermore, this electrically programmable multicolor function enables the effective and dynamic modulation of the color temperature of white light across the warm-to-cool spectrum (3250 K–6250 K). This transformative capability is exceptionally valuable for enhancing the performance of outdoor optical devices that are independent of factors such as the sun’s elevation and prevailing weather conditions.
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ISSN:2055-7434
2096-1030
2055-7434
DOI:10.1038/s41378-023-00635-8