Organic and Inorganic Metal Halide Tandem Scintillator for Dual-Energy Flat-Panel X-ray Imaging

Three-Dimensional Photonic Crystals Based on Porous Anodic Aluminum Oxide

“…A promising approach to obtain ordered porous structures with precisely controlled pore geometry is anodization of the valve metals in acidic electrolytes. Among the anodic oxides of valve metals, porous anodic aluminum oxide (AAO) is widely used in science and technology because of high thermal and chemical stability, high mechanical strength, and transparency in the visible range. − The fabrication technique is highly reproducible and accompanied by the possibility to vary the parameters of the AAO porous structure over a wide range by changing the anodization conditions …”

Quantitative Dual-Energy X-ray Imaging Based on K-Edge Absorption Difference

“…In the simplest configuration of multispectral FPXI, two dual-energy channels are employed, as shown in Figure . − When selecting the upper scintillator material with a preference for absorbing softer X-rays, a wide array of options meet the criteria, as nearly all materials exhibit significantly higher absorption ratios for soft X-rays compared with the hard ones. The main challenge is to find a bottom scintillator with an absorption cross section significantly higher than that of the upper scintillator for the hard X-ray channel.…”