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Direction‐Controllable Plasmonic Color Scanning by Using Laser‐Induced Bubbles
Author(s) -
Li Guozhou,
Jia Shangtong,
Yang Hong,
Chen Jianjun
Publication year - 2021
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.202008579
Subject(s) - materials science , plasmon , laser , optics , laser scanning , optoelectronics , structural coloration , physics , photonic crystal
Because of the subwavelength pixel resolution, long‐term stability, and radiation resistance, plasmonic colors show great potential applications in high‐resolution color display, high‐density information storage, and stable color printing. Herein, laser‐induced bubbles are used to realize time‐ and direction‐controllable plasmonic color scanning in a metallic nanohole array, which can give rise to plasmonic colors. When the environment is changed from air to water, the peak wavelength of the metallic nanohole array is redshifted by ≈146 nm, and the color of the metallic nanohole array is changed from purple to yellow. Experimentally, these color changes are demonstrated when the water gradually covers the metallic nanohole array. More importantly, by using laser‐induced bubbles, time‐ and direction‐controllable plasmonic color scanning is achieved by controlling the movement speeds and positions of a control laser. Compared to the current state‐of‐the‐art plasmonic color scanning technology, the scanning time by using laser‐induced bubbles decreases by four orders of magnitude for the same scanning length. The time‐ and direction‐controllable color scanning provides additional degrees of freedom (scanning time and scanning direction), and it may have potential applications in information display, security, storage, and encoding.