Roslyakov Ilya V, Kushnir Sergey E, Novikov Vladimir B, Dotsenko Andrey A, Tsymbarenko Dmitry M, Sapoletova Nina A, Murzina Tatiana V, Stolyarov Vasily S, Napolskii Kirill S
Department of Materials Science, Lomonosov Moscow State University, 119991 Moscow, Russia.
Kurnakov Institute of General and Inorganic Chemistry RAS, 119991 Moscow, Russia.
J Phys Chem Lett. 2024 Apr 25;15(16):4319-4326. doi: 10.1021/acs.jpclett.4c00537. Epub 2024 Apr 15.
Photonic crystals (PCs) consisting of a periodic arrangement of holes in dielectric media have found success in light manipulation and sensing. Among them, three-dimensional (3D) PCs are in high demand due to their unique properties originating from multiple photonic band gaps (PBGs) and even full ones. Here, 3D PCs based on porous anodic aluminum oxide (AAO) were fabricated for the first time. Our approach involves prepatterning of the aluminum surface by a focused ion beam to form a hexagonal array of pore nuclei. Subsequent anodization in 1 M HPO using a sine wave profile of voltage provides AAO with a defect-free in-plane porous structure and out-of-plane porosity modulation. The ability to tune the position, width, and depth of the PBGs is demonstrated. The combination of the flexibility of the proposed approach with the unique properties of AAO extends the range of practical applications of 3D PCs far beyond the current achievements.
由介电介质中周期性排列的孔组成的光子晶体（PCs）在光操纵和传感方面取得了成功。其中，三维（3D）光子晶体因其源于多个光子带隙（PBGs）甚至完全带隙的独特性质而需求量很大。在此，首次制备了基于多孔阳极氧化铝（AAO）的3D光子晶体。我们的方法包括通过聚焦离子束对铝表面进行预图案化，以形成孔核的六边形阵列。随后在1 M HPO中使用正弦波电压分布进行阳极氧化，可使AAO具有无缺陷的面内多孔结构和面外孔隙率调制。展示了调节光子带隙的位置、宽度和深度的能力。所提出方法的灵活性与AAO的独特性质相结合，将3D光子晶体的实际应用范围扩展到远远超出当前成果的领域。
