Plasmonic Nanosensors Based on Highly Tunable Multiple Fano Resonances Induced in Metal–Insulator–Metal Waveguide Systems
We designed and investigated a plasmonic nanosensor with ultra-high sensitivity and tunability, which is composed of a metal–insulator–metal (MIM) waveguide integrated with a side-coupled resonator (SR) and metal baffle. Its high performance is derived from Fano resonance, which is generated by the...
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MDPI AG
2025-04-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/15/9/686 |
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| author | Ping Jiang Yilin Wang |
| author_facet | Ping Jiang Yilin Wang |
| author_sort | Ping Jiang |
| collection | DOAJ |
| description | We designed and investigated a plasmonic nanosensor with ultra-high sensitivity and tunability, which is composed of a metal–insulator–metal (MIM) waveguide integrated with a side-coupled resonator (SR) and metal baffle. Its high performance is derived from Fano resonance, which is generated by the interaction between the modes of the SR and the baffle, and it can be precisely tuned by adjusting the parameters of the SR. Further investigation based on the incorporation of a side-coupled rectangular-ring resonator (SRR) generates three distinct Fano resonances, and the Fano resonance can be accurately tuned by manipulating the parameters of the resonators within the system. Our proposed plasmonic system can serve as a highly sensitive refractive index nanosensor, achieving a sensitivity up to 1150 nm/RIU. The plasmonic structures featuring independently tunable triple Fano resonances open new avenues for applications in nanosensing, bandstop filtering, and slow-light devices. |
| format | Article |
| id | doaj-art-592bbbb02f154080987fab0c212bc36d |
| institution | Kabale University |
| issn | 2079-4991 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj-art-592bbbb02f154080987fab0c212bc36d2025-08-20T03:49:22ZengMDPI AGNanomaterials2079-49912025-04-0115968610.3390/nano15090686Plasmonic Nanosensors Based on Highly Tunable Multiple Fano Resonances Induced in Metal–Insulator–Metal Waveguide SystemsPing Jiang0Yilin Wang1School of Science Microelectronics & Data Science, Anhui University of Technology, Maanshan 243002, ChinaCollege of Mathematics and Physics, Beijing University of Chemical Technology, Beijing 100029, ChinaWe designed and investigated a plasmonic nanosensor with ultra-high sensitivity and tunability, which is composed of a metal–insulator–metal (MIM) waveguide integrated with a side-coupled resonator (SR) and metal baffle. Its high performance is derived from Fano resonance, which is generated by the interaction between the modes of the SR and the baffle, and it can be precisely tuned by adjusting the parameters of the SR. Further investigation based on the incorporation of a side-coupled rectangular-ring resonator (SRR) generates three distinct Fano resonances, and the Fano resonance can be accurately tuned by manipulating the parameters of the resonators within the system. Our proposed plasmonic system can serve as a highly sensitive refractive index nanosensor, achieving a sensitivity up to 1150 nm/RIU. The plasmonic structures featuring independently tunable triple Fano resonances open new avenues for applications in nanosensing, bandstop filtering, and slow-light devices.https://www.mdpi.com/2079-4991/15/9/686surface plasmonsplasmonic waveguideFano resonancesensor |
| spellingShingle | Ping Jiang Yilin Wang Plasmonic Nanosensors Based on Highly Tunable Multiple Fano Resonances Induced in Metal–Insulator–Metal Waveguide Systems Nanomaterials surface plasmons plasmonic waveguide Fano resonance sensor |
| title | Plasmonic Nanosensors Based on Highly Tunable Multiple Fano Resonances Induced in Metal–Insulator–Metal Waveguide Systems |
| title_full | Plasmonic Nanosensors Based on Highly Tunable Multiple Fano Resonances Induced in Metal–Insulator–Metal Waveguide Systems |
| title_fullStr | Plasmonic Nanosensors Based on Highly Tunable Multiple Fano Resonances Induced in Metal–Insulator–Metal Waveguide Systems |
| title_full_unstemmed | Plasmonic Nanosensors Based on Highly Tunable Multiple Fano Resonances Induced in Metal–Insulator–Metal Waveguide Systems |
| title_short | Plasmonic Nanosensors Based on Highly Tunable Multiple Fano Resonances Induced in Metal–Insulator–Metal Waveguide Systems |
| title_sort | plasmonic nanosensors based on highly tunable multiple fano resonances induced in metal insulator metal waveguide systems |
| topic | surface plasmons plasmonic waveguide Fano resonance sensor |
| url | https://www.mdpi.com/2079-4991/15/9/686 |
| work_keys_str_mv | AT pingjiang plasmonicnanosensorsbasedonhighlytunablemultiplefanoresonancesinducedinmetalinsulatormetalwaveguidesystems AT yilinwang plasmonicnanosensorsbasedonhighlytunablemultiplefanoresonancesinducedinmetalinsulatormetalwaveguidesystems |