All-Dielectric Full-Color Printing with TiO2Metasurfaces.
Recently, color generation in resonant nanostructures have been intensively studied. Despite of their exciting progresses, the structural colors are usually generated by the plasmonic resonances of metallic nanoparticles. Due to the inherent plasmon damping, such plasmonic nanostructures are usually hard to create very distinct color impressions. Here we utilize the concept of metasurfaces to produce all-dielectric, low-loss, and high-resolution structural colors. We have fabricated TiO2metasurfaces with electron-beam lithography and a very simple lift-off process. The optical characterizations showed that the TiO2metasurfaces with different unit sizes could generate high reflection peaks at designed wavelengths. The maximal reflectance was as high as 64% with full width at half-maximum (fwhm) around 30 nm. Consequently, distinct colors have been observed in bright field and the generated colors covered the entire visible spectral range. The detailed numerical analysis shows that the distinct colors were generated by the electric resonance and magnetic resonances in TiO2metasurfaces. Based on the unique properties of magnetic resonances, distinct colors have been observed in bright field when the metasurfaces were reduced to a 4 × 4 array, giving a spatial resolution around 16000 dpi. Considering the cost, stability, and CMOS-compatibility, this research will be important for the structural colors to reach real-world industrial applications.
State Key Laboratory on Tunable laser Technology, Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Shenzhen Graduate School, Harbin Institute of Technology , Shenzhen 518055, China.|Collaborative Innovation Center of Extreme Optics, Shanxi University , Taiyuan 030006, China.
Shang
S
Sun
State Key Laboratory on Tunable laser Technology, Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Shenzhen Graduate School, Harbin Institute of Technology , Shenzhen 518055, China.|Collaborative Innovation Center of Extreme Optics, Shanxi University , Taiyuan 030006, China.
Zhenxing
Z
Zhou
State Key Laboratory on Tunable laser Technology, Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Shenzhen Graduate School, Harbin Institute of Technology , Shenzhen 518055, China.|Collaborative Innovation Center of Extreme Optics, Shanxi University , Taiyuan 030006, China.
Chen
C
Zhang
State Key Laboratory on Tunable laser Technology, Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Shenzhen Graduate School, Harbin Institute of Technology , Shenzhen 518055, China.|Collaborative Innovation Center of Extreme Optics, Shanxi University , Taiyuan 030006, China.
Yisheng
Y
Gao
State Key Laboratory on Tunable laser Technology, Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Shenzhen Graduate School, Harbin Institute of Technology , Shenzhen 518055, China.|Collaborative Innovation Center of Extreme Optics, Shanxi University , Taiyuan 030006, China.
Zonghui
Z
Duan
State Key Laboratory on Tunable laser Technology, Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Shenzhen Graduate School, Harbin Institute of Technology , Shenzhen 518055, China.|Collaborative Innovation Center of Extreme Optics, Shanxi University , Taiyuan 030006, China.
Shumin
S
Xiao
State Key Laboratory on Tunable laser Technology, Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Shenzhen Graduate School, Harbin Institute of Technology , Shenzhen 518055, China.|Collaborative Innovation Center of Extreme Optics, Shanxi University , Taiyuan 030006, China.
Qinghai
0000-0003-1048-411X
Q
Song
all dielectric; full-color; high reflection; metasurface; structural color