用于X射线闪烁和成像的碲化镉量子点与聚合物纳米复合材料。
CdTe quantum dots and polymer nanocomposites for x-ray scintillation and imaging.
作者信息
Kang Zhitao, Zhang Yuelan, Menkara Hisham, Wagner Brent K, Summers Christopher J, Lawrence William, Nagarkar Vivek
出版信息
Appl Phys Lett. 2011 May 2;98(18):181914. doi: 10.1063/1.3589366. Epub 2011 May 6.
Abstract
Investigations are reported on the x-ray scintillation and imaging application of CdTe quantum dots (QDs) and their polymer nanocomposites. Aqueous CdTe QDs with emissions ranging between 510 and 680 nm were prepared and incorporated into polyvinyl alcohol or polymethyl methacrylate polymer matrices. The x-ray luminescent properties were evaluated and a resolution of 5 lines∕mm was obtained from the nanocomposite films. Additionally, the fast decay time, nonafterglow, and superior spectral match to conventional charge coupled devices, show that CdTe QD nanocomposites have high promise for x-ray imaging applications.
摘要
报道了关于碲化镉量子点（QDs）及其聚合物纳米复合材料的X射线闪烁和成像应用的研究。制备了发射波长在510至680纳米之间的水相碲化镉量子点，并将其掺入聚乙烯醇或聚甲基丙烯酸甲酯聚合物基质中。评估了X射线发光特性，从纳米复合薄膜中获得了5线∕毫米的分辨率。此外，快速衰减时间、无余辉以及与传统电荷耦合器件的优异光谱匹配表明，碲化镉量子点纳米复合材料在X射线成像应用方面具有很高的前景。
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