The present research proposes a method that can identify tumour cells present in the human breast with the help of a plasmon-based three-dimensional (3D) photonic structure. The mechanism of detection of cells (tumour or normal) is realised through the analysis of the photonic bandgap of the proposed copper-based plasmonic structure. Moreover, the plane-wave expansion technique is applied to find the solution of the Helmholtz equation that determines the band structure. In this process, three signals with frequencies of 0.5, 1.0 and 1.5 THz are allowed to impinge on the structure to obtain the required results. The detection of cells that may be normal or suffering from tumour is confirmed by the reflected signal from the 3D photonic structure. More precisely, the bandgap analysis suggests that the cell is cancerous (suffering from tumour) if the reflected signal falls within the blue regime. In contrast, if the signal received finds a place within the violet regime of the spectrum, then this is an indication of a normal cell.

中文翻译：

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一种利用光子结构快速检测乳腺肿瘤细胞的3D传感器方案

本研究提出了一种方法，该方法可以借助基于等离子体的三维 (3D) 光子结构来识别人类乳房中存在的肿瘤细胞。检测细胞（肿瘤或正常）的机制是通过分析所提出的铜基等离子体结构的光子带隙来实现的。此外，应用平面波展开技术来寻找决定带结构的亥姆霍兹方程的解。在此过程中，允许频率为 0.5、1.0 和 1.5 THz 的三个信号撞击结构以获得所需的结果。来自 3D 光子结构的反射信号证实了对可能正常或患有肿瘤的细胞的检测。更确切地说，带隙分析表明，如果反射信号落在蓝色区域内，则细胞是癌性的（患有肿瘤）。相比之下，如果接收到的信号在光谱的紫色区域内找到一个位置，那么这表明细胞是正常的。