期刊
NANO CONVERGENCE
卷 9, 期 1, 页码 -出版社
SPRINGER
DOI: 10.1186/s40580-022-00331-9
关键词
Polarization-sensitive metamaterial; Large-scale fabrication; Anodized aluminum oxide; Block copolymer; Oblique angle deposition; Impedance matching
资金
- National Creative Research Initiative Program - National Research Foundation of Korea (NRF) - Korea government (MSIT) [NRF-2022R1A3A3002149]
- POSCO
- National Research Foundation (NRF) - MSIT of the Korean government [NRF-2022M3C1A3081312, NRF-2022M3H4A1A02085335, CAMM2019M3A6B3030637, NRF-2019R1A5A8080290]
- POSTECH-Samsung Semiconductor Research Center grant - Samsung Electronics [IO201215-08187-01]
- POSTECH PIURI fellowship
- NRF postdoctoral fellowship - Ministry of Education of the Korean government [NRF-2021R1A6A3A01087429]
- National Research Foundation of Korea [2022M3H4A1A02085335] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Polarization-sensitive dichroic responses in both visible and near-infrared wavelengths are realized over a centimeter-scale large area using stacked split-ring resonators (SSRR) arrays. These arrays are derived from pagoda-like nanorods fabricated from the self-assembly of a lamellae-forming polystyrene-b-poly (methyl methacrylate) copolymer (PS-b-PMMA) confined in cylindrical pores of anodized aluminum oxide (AAO) template. The sophisticated nanoscale architectures achieved through bottom-up fabrication can be applied to structural color, optical anti-counterfeiting, and commercial optical components.
Stacked split-ring resonators (SSRR) arrays exhibiting polarization-sensitive dichroic responses in both visible and near-infrared wavelengths are realized over a centimeter-scale large area. The SSRR arrays are derived from pagoda-like nanorods fabricated from the self-assembly of a lamellae-forming polystyrene-b-poly (methyl methacrylate) copolymer (PS-b-PMMA) confined in cylindrical pores of anodized aluminum oxide (AAO) template. Along the nanorod direction, PS and PMMA nanodomains were alternately stacked with the same distance. Silver crescents and semi-hemispherical covers, which are essential for SSRR with the polarization sensitivity, were obliquely deposited on the single side of the nanorod after removing the AAO template and reactive-ion etching treatment. These sophisticated nanoscale architectures made by bottom-up fabrication can be applied to structural color, optical anti-counterfeiting, and commercial optical components in a large area.
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