Design and optimization of polymer-doped perfect annular photonic crystal for gamma radiation sensing application

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry Pub Date : 2025-06-16 DOI:10.1016/j.radphyschem.2025.113075

Hussein A. Elsayed , Suryakanta Nayak , Ayman A. Ameen , Haifa E. Alfassam , Ali Hajjiah , Mostafa R. Abukhadra , Stefano Bellucci , Ahmed Mehaney

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Abstract

This study presents a novel design for a polymer-doped annular photonic crystal (APC) tailored for high-sensitivity gamma-ray detection. The structure comprises 40 repeated bilayer unit cells arranged alternately. The first layer consists of porous silicon impregnated with polyvinyl alcohol (PVA) and doped with crystal violet (CV) and carbol fuchsine (CF) dyes, while the second layer contains PVA similarly doped with CV and CF. To evaluate the reflectance spectrum, a modified transfer matrix method was employed, emphasizing the distinctive optical behavior of photonic bandgaps (PBG) for accurate radiation measurement.

By optimizing the APC's geometrical parameters and incorporating polymer doping, we achieved enhanced tunability of the PBG in the reflectance spectrum. Exposure to varying doses of gamma radiation induced noticeable shifts in the PBG's left and right edge wavelengths, as well as alterations in its width and central position. Numerical simulations revealed a peak sensitivity of 232.59 nm/RIU for gamma-ray doses ranging from 0 Gy to 70 Gy. This innovative APC design offers a robust and efficient approach to real-time gamma-ray dosimetry, with promising potential in medical radiation monitoring, nuclear safety, and environmental protection.

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用于伽马辐射传感的聚合物掺杂完美环形光子晶体的设计与优化

本研究提出了一种用于高灵敏度伽玛射线探测的聚合物掺杂环形光子晶体（APC）的新设计。该结构包括40个交替排列的重复双层单元细胞。第一层由浸透聚乙烯醇（PVA）并掺杂结晶紫（CV）和碳红（CF）染料的多孔硅组成，而第二层则含有同样掺杂了CV和CF的PVA。为了评估反射光谱，采用了改进的传递矩阵法，强调光子带隙（PBG）的独特光学行为，以精确测量辐射。通过优化APC的几何参数并加入聚合物掺杂，我们增强了PBG在反射光谱中的可调性。暴露于不同剂量的伽马辐射会引起PBG左右边缘波长的明显变化，以及其宽度和中心位置的变化。数值模拟表明，在0 Gy至70 Gy的γ射线剂量范围内，峰值灵敏度为232.59 nm/RIU。这种创新的APC设计为实时伽马射线剂量测定提供了一种强大而有效的方法，在医疗辐射监测、核安全和环境保护方面具有很大的潜力。

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来源期刊

Radiation Physics and Chemistry 化学-核科学技术

CiteScore

5.60

自引率

17.20%

发文量

574

审稿时长

12 weeks

期刊介绍： Radiation Physics and Chemistry is a multidisciplinary journal that provides a medium for publication of substantial and original papers, reviews, and short communications which focus on research and developments involving ionizing radiation in radiation physics, radiation chemistry and radiation processing. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. This could include papers that are very similar to previous publications, only with changed target substrates, employed materials, analyzed sites and experimental methods, report results without presenting new insights and/or hypothesis testing, or do not focus on the radiation effects.