Nanometer refractive index sensor based on water droplet cavity structure with rectangular short rod
In this paper, a novel nano sensor structure is proposed, which consists of a metal-insulator-metal waveguide (MIM) with rectangular baffles and a water droplet cavity with rectangular stubs (WDCRS). The WDCRS structure optimizes the sensitivity of a single water droplet cavity and makes the transmi...
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| Published in | Frontiers in physics Vol. 12 |
|---|---|
| Main Authors | , , , , , , , , |
| Format | Journal Article |
| Language | English |
| Published |
Frontiers Media S.A
10.04.2024
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| Subjects | |
| Online Access | Get full text |
| ISSN | 2296-424X 2296-424X |
| DOI | 10.3389/fphy.2024.1364998 |
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| Abstract | In this paper, a novel nano sensor structure is proposed, which consists of a metal-insulator-metal waveguide (MIM) with rectangular baffles and a water droplet cavity with rectangular stubs (WDCRS). The WDCRS structure optimizes the sensitivity of a single water droplet cavity and makes the transmission curve clearer and smoother. The transmission characteristics of WDCRS structure were simulated using finite element method (FEM). The transmission characteristics of the exported structure were analyzed in detail. In addition, the influence of structural geometric parameters on sensing performance was also studied, and it was found that the size of the water droplet cavity is a key factor in improving sensitivity. When applied to a refractive index sensor, the structure achieves a sensitivity of up to 2,300 nm/RIU with a corresponding figure of merit (FOM) of 60.5. These works provide some ideas for the design of high-performance nanostructures and multiple Fano resonance excitation structures. |
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| AbstractList | In this paper, a novel nano sensor structure is proposed, which consists of a metal-insulator-metal waveguide (MIM) with rectangular baffles and a water droplet cavity with rectangular stubs (WDCRS). The WDCRS structure optimizes the sensitivity of a single water droplet cavity and makes the transmission curve clearer and smoother. The transmission characteristics of WDCRS structure were simulated using finite element method (FEM). The transmission characteristics of the exported structure were analyzed in detail. In addition, the influence of structural geometric parameters on sensing performance was also studied, and it was found that the size of the water droplet cavity is a key factor in improving sensitivity. When applied to a refractive index sensor, the structure achieves a sensitivity of up to 2,300 nm/RIU with a corresponding figure of merit (FOM) of 60.5. These works provide some ideas for the design of high-performance nanostructures and multiple Fano resonance excitation structures. |
| Author | Liu, Jilai Ren, Yifeng Cao, Yuhao Wang, Jin Yan, Shubin Liu, Feng Zhang, Yi Chang, Shuwen Cui, Yang |
| Author_xml | – sequence: 1 givenname: Jin surname: Wang fullname: Wang, Jin – sequence: 2 givenname: Shubin surname: Yan fullname: Yan, Shubin – sequence: 3 givenname: Feng surname: Liu fullname: Liu, Feng – sequence: 4 givenname: Shuwen surname: Chang fullname: Chang, Shuwen – sequence: 5 givenname: Yuhao surname: Cao fullname: Cao, Yuhao – sequence: 6 givenname: Yang surname: Cui fullname: Cui, Yang – sequence: 7 givenname: Jilai surname: Liu fullname: Liu, Jilai – sequence: 8 givenname: Yi surname: Zhang fullname: Zhang, Yi – sequence: 9 givenname: Yifeng surname: Ren fullname: Ren, Yifeng |
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| Cites_doi | 10.1038/s41598-020-63459-w 10.1109/jqe.2014.2359232 10.1063/1.2056594 10.1038/nature05350 10.1103/physreva.95.023810 10.1038/nphoton.2009.282 10.1016/j.ijleo.2012.11.025 10.1021/cr100313v 10.1016/j.nanoen.2011.09.002 10.1038/nature01937 10.1109/TNANO.2011.2147330 10.1007/s00339-018-2283-0 10.1007/s11468-015-0174-1 10.1364/OE.395696 10.1109/jqe.2016.2640220 10.1364/oe.23.019082 10.3390/s16050642 10.1109/jsen.2018.2826040 10.1007/s11468-015-0042-z 10.1364/oe.20.003408 10.1364/oe.19.007633 10.1109/jlt.2016.2546317 10.1088/0034-4885/76/1/016402 10.1109/jphot.2015.2419635 10.1007/s11468-016-0309-z 10.1007/s13320-018-0509-6 10.1016/j.optcom.2022.128429 10.1007/s11468-011-9260-1 10.1016/j.physrep.2004.11.001 10.1038/ncomms14411 |
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| References | Yin (B3) 2010; 1 Huang (B14) 2016; 34 Wang (B13) 2016; 11 Chen (B26) 2013; 124 Tao (B7) 2011; 6 Fang (B8) 2016; 11 Tathfif (B23) 2022; 519 Zhu (B27) 2011; 10 Yan (B16) 2017; 8 Akram (B17) 2017; 95 Nejat (B25) 2020; 10 Chen (B11) 2011; 19 Mayer (B30) 2011; 111 Wei (B18) 2017; 12 Chen (B15) 2016; 53 Zhang (B29) 2019; 125 Han (B5) 2013; 76 Veronis (B9) 2005; 87 Barnes (B1) 2003; 424 Xie (B28) 2015; 7 Kong (B24) 2015; 23 Genet (B4) 2007; 445 Zhu (B22) 2020; 28 Zafar (B20) 2018; 18 Neutens (B12) 2012; 20 Zhang (B21) 2018; 8 Zayats (B6) 2005; 408 Zhang (B19) 2016; 16 Gramotnev (B2) 2010; 4 Tian (B10) 2014; 50 |
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