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基于石墨烯-等离子体纳米结构的灵敏血红蛋白浓度传感器。

Sensitive Hemoglobin Concentration Sensor Based on Graphene-Plasmonic Nano-structures.

作者信息

Chahkoutahi Atefeh, Emami Farzin, Rafiee Esmat

机构信息

Electronic Department of, Nano-Optoelectronic Research Center, Shiraz University of Technology, Shiraz, Iran.

Department of Electrical Engineering, Faculty of Engineering, Alzahra University, Tehran, Iran.

出版信息

Plasmonics. 2022;17(1):423-431. doi: 10.1007/s11468-021-01531-5. Epub 2021 Sep 21.

DOI:10.1007/s11468-021-01531-5
PMID:34566539
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8455116/
Abstract

In this paper, half-cylindrical-shaped rods are arranged in a row in order to form hemoglobin concentration sensors. The proposed structures can effectively detect hemoglobin concentrations in blood samples. Five individual structures based on graphene-plasmonic combinations are proposed and investigated. The proposed structures are made of different layers of Au, Ag, SiO, and graphene. Different plates and cylindrical-shaped graphene layers are introduced in the structures to improve the functionality (absorption peak value and wavelength) of the absorber (sensor). Adding more Au layers strengthens the confinement of the incident electromagnetic waves and improves the absorption factor. Also, in the proposed structures, for improving the results, the effects of the chemical potential of graphene layers and "G" (graphene layer thicknesses) on the absorption peak and wavelength are considered. The final suggested structure indicates unity absorption peak and thus can be utilized in wide ranges of applications. As a refractive index bio-sensor, the structure is considered for detecting hemoglobin concentrations in blood samples which indicates a reasonable sensitivity factor of 570 nm/RIU.

摘要

在本文中，半圆柱形棒排成一排以形成血红蛋白浓度传感器。所提出的结构能够有效检测血样中的血红蛋白浓度。提出并研究了基于石墨烯 - 等离子体组合的五种独立结构。所提出的结构由不同层的金（Au）、银（Ag）、二氧化硅（SiO）和石墨烯制成。在结构中引入不同的平板和圆柱形石墨烯层以改善吸收体（传感器）的功能（吸收峰值和波长）。增加更多的金层可增强对入射电磁波的限制并提高吸收系数。此外，在所提出的结构中，为了改善结果，还考虑了石墨烯层的化学势和“G”（石墨烯层厚度）对吸收峰值和波长的影响。最终建议的结构显示出单一的吸收峰值，因此可用于广泛的应用。作为一种折射率生物传感器，该结构被用于检测血样中的血红蛋白浓度，其显示出570 nm/RIU的合理灵敏度因子。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e4b/8455116/add72e96105d/11468_2021_1531_Fig11_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e4b/8455116/add72e96105d/11468_2021_1531_Fig11_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e4b/8455116/41a80be39e05/11468_2021_1531_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e4b/8455116/8c857e92a74d/11468_2021_1531_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e4b/8455116/6c5368264958/11468_2021_1531_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e4b/8455116/8a7da275dca6/11468_2021_1531_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e4b/8455116/a9e86848748c/11468_2021_1531_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e4b/8455116/ce9151074fa6/11468_2021_1531_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e4b/8455116/0607e92f7238/11468_2021_1531_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e4b/8455116/7b137be5616b/11468_2021_1531_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e4b/8455116/fa29a3e6cf73/11468_2021_1531_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e4b/8455116/686db94de2a9/11468_2021_1531_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e4b/8455116/add72e96105d/11468_2021_1531_Fig11_HTML.jpg

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