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金-铟-二碲化钼-石墨烯异质结构中的巨古斯-汉肯位移及其在高性能传感器中的应用潜力

Giant Goos-Hänchen Shifts in Au-ITO-TMDCs-Graphene Heterostructure and Its Potential for High Performance Sensor.

机构信息

School of Mechanical Engineering and Electronic Information, China University of Geosciences (Wuhan), Wuhan 430074, China.

Institute of Marine Geological Exploration Technology, Guangzhou Marine Geology Survey, Guangzhou 510075, China.

出版信息

Sensors (Basel). 2020 Feb 14;20(4):1028. doi: 10.3390/s20041028.

DOI:10.3390/s20041028
PMID:32075012
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7070563/
Abstract

In order to improve the performance of surface plasmon resonance (SPR) biosensor, the structure based on two-dimensional (2D) of graphene and transition metal dichalcogenides (TMDCs) are proposed to greatly enhance the Goos-Hänchen (GH) shift. It is theoretically proved that GH shift can be significantly enhanced in SPR structure coated with gold (Au)-indium tin oxide (ITO)-TMDCs-graphene heterostructure. In order to realize high GH shifts, the number of TMDCs and graphene layer are optimized. The highest GH shift (-801.7 λ) is obtained by Au-ITO-MoSe-graphene hybrid structure with MoSe monolayer and graphene bilayer, respectively. By analyzing the GH variation, the index sensitivity of such configuration can reach as high as 8.02 × 10 λ/RIU, which is 293.24 times of the Au-ITO structure and 177.43 times of the Au-ITO-graphene structure. The proposed SPR biosensor can be widely used in the precision metrology and optical sensing.

摘要

为了提高表面等离子体共振 (SPR) 生物传感器的性能，提出了基于二维 (2D) 石墨烯和过渡金属二卤化物 (TMDCs) 的结构，以大大增强古斯-汉欣 (GH) 位移。从理论上证明，在涂有金 (Au)-铟锡氧化物 (ITO)-TMDCs-石墨烯异质结构的 SPR 结构中，GH 位移可以显著增强。为了实现高 GH 位移，优化了 TMDCs 和石墨烯层的数量。通过 Au-ITO-MoSe-石墨烯杂化结构，获得了最高的 GH 位移 (-801.7λ)，其中 MoSe 单层和石墨烯双层分别为 Au-ITO-MoSe-石墨烯杂化结构。通过分析 GH 的变化，这种配置的折射率灵敏度可高达 8.02×10λ/RIU，是 Au-ITO 结构的 293.24 倍，是 Au-ITO-石墨烯结构的 177.43 倍。所提出的 SPR 生物传感器可广泛应用于精密计量和光学传感。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9262/7070563/a8bacb79c6e4/sensors-20-01028-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9262/7070563/0e413374e804/sensors-20-01028-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9262/7070563/037e95b5a346/sensors-20-01028-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9262/7070563/cc7b05f6fabb/sensors-20-01028-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9262/7070563/51aac23bbebf/sensors-20-01028-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9262/7070563/53dacd76f33e/sensors-20-01028-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9262/7070563/9f98616d5b16/sensors-20-01028-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9262/7070563/a40069a16c2f/sensors-20-01028-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9262/7070563/a8bacb79c6e4/sensors-20-01028-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9262/7070563/0e413374e804/sensors-20-01028-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9262/7070563/037e95b5a346/sensors-20-01028-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9262/7070563/cc7b05f6fabb/sensors-20-01028-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9262/7070563/51aac23bbebf/sensors-20-01028-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9262/7070563/53dacd76f33e/sensors-20-01028-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9262/7070563/9f98616d5b16/sensors-20-01028-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9262/7070563/a40069a16c2f/sensors-20-01028-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9262/7070563/a8bacb79c6e4/sensors-20-01028-g008.jpg

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