KMS Chongqing Institute of Green and Intelligent Technology, CAS
| Conformal Graphene-Decorated Nanofluidic Sensors Based on Surface Plasmons at Infrared Frequencies | |
Wei, Wei1,2,3 ; Nong, Jinpeng1,2,3; Tang, Linlong3,4 ; Zhang, Guiwen2; Yang, Jun3,4; Luo, Wei2,3
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| 2016-06-01 | |
| 摘要 | An all-in-one prism-free infrared sensor based on graphene surface plasmons is proposed for nanofluidic analysis. A conformal graphene-decorated nanofluidic sensor is employed to mimic the functions of a prism, sensing plate, and fluidic channel in the tradition setup. Simulation results show that the redshift of the resonant wavelength results in the improvement of sensitivity up to 4525 nm/RIU. To reshape the broadened spectral lines induced by the redshift of the resonant wavelength to be narrower and deeper, a reflection-type configuration is further introduced. By tuning the distance between the graphene and reflective layers, the figure of merit (FOM) of the device can be significantly improved and reaches a maximum value of 37.69 RIU-1, which is 2.6 times that of the former transmission-type configuration. Furthermore, the optimized sensor exhibits superior angle-insensitive property. Such a conformal graphene-decorated nanofluidic sensor offers a novel approach for graphene-based on-chip fluidic biosensing. |
| 关键词 | sensor surface plasmons nanofluidic conformal grapheme infrared |
| DOI | 10.3390/s16060899 |
| URL | 查看原文 |
| 发表期刊 | SENSORS
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| ISSN | 1424-8220 |
| 卷号 | 16期号:6页码:10 |
| 通讯作者 | Wei, W (reprint author), Chongqing Univ, Key Lab Optoelect Technol & Syst, Minist Educ China, Chongqing 400044, Peoples R China. ; Wei, W (reprint author), Chongqing Univ, Coll Optoelect Engn, Chongqing 400044, Peoples R China. ; Wei, W (reprint author), Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 401122, Peoples R China. |
| 收录类别 | SCI |
| WOS记录号 | WOS:000378756500147 |
| 语种 | 英语 |
