Photonic crystals based on titania are of great practical importance in modern photonics owing to a variety of possibilities for their applications in optoelectronics, sensorics, and solar photovoltaics. However, the reproducible, scalable, and low-cost method of the preparation of titania photonic crystals with desired optical characteristics is still absent. Here the novel anodizing regime with voltage versus electric charge modulation, U(Q), is suggested for the precise morphology control of anodic porous films of valve metals oxides. The potential of the suggested approach is demonstrated on the preparation of high-quality one-dimensional titania photonic crystals. A new type of anodic titania nanotubes possessing periodic change of inner diameter and constant outer diameter is prepared using sine-wave modulation of applied voltage with electric charge. The possibility to tune the position of photonic band gap within the whole visible spectrum is shown.

基于二氧化钛的光子晶体在现代光子学中具有重要的实践意义，这是由于其在光电子学，传感器学和太阳能光伏中的各种应用可能性。但是，仍然缺少制备具有所需光学特性的二氧化钛光子晶体的可再现，可扩展和低成本的方法。在这里，新颖的阳极氧化工艺具有电压与电荷调制的关系，U（Q），建议用于阀金属氧化物的阳极多孔膜的精确形貌控制。建议的方法的潜力在制备高质量一维二氧化钛光子晶体上得到了证明。利用带电荷的外加电压正弦波调制技术，制备了一种内径周期性变化，外径恒定的新型阳极二氧化钛纳米管。显示了在整个可见光谱内调整光子带隙位置的可能性。