Li Mengqi, Feng Chao, Zhu Liye, Zhao Yan
School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing 100124, P. R. China.
Key Laboratory of trans-scale Laser Manufacturing Technology, Ministry of Education, Beijing 100124, P. R. China.
Nanoscale. 2025 Feb 13;17(7):4099-4110. doi: 10.1039/d4nr04744c.
Photonic crystals (PC) play a key role in optical field modulation due to their unique photonic band gaps (PBGs). Anodic aluminum oxide (AAO) prepared by pulse anodization is a promising candidate for PC devices. In this research, an AAO-based PC with multi-band was fabricated on a single-slice & single-material film, which exhibits multi-band responses in the visible-to-near-infrared (vis-NIR) region. In other words, multiple PBGs present simultaneously at different wavelength ranges and can be precisely controlled by the experimental protocols. The deposition of a silver layer by a simple physical vapor deposition (PVD) method further modulates the refractive indices of the AAO-based PC, enabling the fabrication of well-distributed Bragg reflector (DBR) structures with tunable optical Tamm states (OTS). The prepared AAO-based PC can work as single-slice & single-material devices with excellent properties and broad application prospects in anti-counterfeiting and selective optical filtering.
光子晶体（PC）因其独特的光子带隙（PBG）在光场调制中起着关键作用。通过脉冲阳极氧化制备的阳极氧化铝（AAO）是用于PC器件的一种很有前景的材料。在本研究中，在单片单材料薄膜上制备了一种具有多波段的基于AAO的光子晶体，其在可见光至近红外（vis-NIR）区域呈现多波段响应。换句话说，多个PBG同时出现在不同的波长范围内，并且可以通过实验方案精确控制。通过简单的物理气相沉积（PVD）方法沉积银层进一步调制了基于AAO的光子晶体的折射率，从而能够制造具有可调光学塔姆态（OTS）的分布良好的布拉格反射器（DBR）结构。所制备的基于AAO的光子晶体可以作为单片单材料器件，具有优异的性能，在防伪和选择性光学滤波方面具有广阔的应用前景。
