TY - JOUR
T1 - Tunable structural colors based on grayscale lithography and conformal coating of VO2
AU - Zhang, Xiaochen
AU - Sun, Haozhe
AU - Li, Yuan
AU - Hao, Jianhua
AU - Liang, Qinghua
AU - Zhang, Yongyue
AU - Wang, Yang
AU - Li, Xiaowei
AU - Zhang, Xinping
AU - Ma, He
AU - Li, Jiafang
N1 - Publisher Copyright:
© 2025 the author(s), published by De Gruyter, Berlin/Boston.
PY - 2025/4/3
Y1 - 2025/4/3
N2 - Structural colors generated by optical micro-/nanostructures offer a notable advantage over traditional chemical pigments, including higher purity, greater brightness, resistance to fading, and enhanced environmental friendliness. However, achieving dynamically switchable color displays with high performances and without resorting to complex nanofabrication methods remain a challenge. Here, we present a simple method using grayscale lithography and conformal coating to create Salisbury screen (SS) cavities with variable resonant wavelengths, enabling the formation of tunable colorful patterns. The dynamic color display is achieved through the phase change of vanadium dioxide (VO2) nanostructures under electrothermal effects. At a low actuation voltage of 1.4V, high performances of color switching such as high sensitivity, fast speed, high repeatability, and wide-view angle are achieved. The tunable structural colors, featuring a simple preparation process and high-speed switching, represent a promising alternative for applications such as thermal sensors, security information encryption, and dynamic full-color displays.
AB - Structural colors generated by optical micro-/nanostructures offer a notable advantage over traditional chemical pigments, including higher purity, greater brightness, resistance to fading, and enhanced environmental friendliness. However, achieving dynamically switchable color displays with high performances and without resorting to complex nanofabrication methods remain a challenge. Here, we present a simple method using grayscale lithography and conformal coating to create Salisbury screen (SS) cavities with variable resonant wavelengths, enabling the formation of tunable colorful patterns. The dynamic color display is achieved through the phase change of vanadium dioxide (VO2) nanostructures under electrothermal effects. At a low actuation voltage of 1.4V, high performances of color switching such as high sensitivity, fast speed, high repeatability, and wide-view angle are achieved. The tunable structural colors, featuring a simple preparation process and high-speed switching, represent a promising alternative for applications such as thermal sensors, security information encryption, and dynamic full-color displays.
KW - electrical control
KW - grayscale exposure
KW - phase change materials
KW - structural colors
KW - vanadium dioxide
UR - http://www.scopus.com/inward/record.url?scp=105003939438&partnerID=8YFLogxK
U2 - 10.1515/nanoph-2024-0546
DO - 10.1515/nanoph-2024-0546
M3 - Article
AN - SCOPUS:105003939438
SN - 2192-8606
VL - 14
SP - 1123
EP - 1133
JO - Nanophotonics
JF - Nanophotonics
IS - 8
ER -