Hybrid Plasmonic Fiber-Optic Sensors
With the increasing demand of achieving comprehensive perception in every aspect of life, optical fibers have shown great potential in various applications due to their highly-sensitive, highly-integrated, flexible and real-time sensing capabilities. Among various sensing mechanisms, plasmonics base...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-06-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/20/11/3266 |
| _version_ | 1827715468968853504 |
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| author | Miao Qi Nancy Meng Ying Zhang Kaiwei Li Swee Chuan Tjin Lei Wei |
| author_facet | Miao Qi Nancy Meng Ying Zhang Kaiwei Li Swee Chuan Tjin Lei Wei |
| author_sort | Miao Qi |
| collection | DOAJ |
| description | With the increasing demand of achieving comprehensive perception in every aspect of life, optical fibers have shown great potential in various applications due to their highly-sensitive, highly-integrated, flexible and real-time sensing capabilities. Among various sensing mechanisms, plasmonics based fiber-optic sensors provide remarkable sensitivity benefiting from their outstanding plasmon–matter interaction. Therefore, surface plasmon resonance (SPR) and localized SPR (LSPR)-based hybrid fiber-optic sensors have captured intensive research attention. Conventionally, SPR- or LSPR-based hybrid fiber-optic sensors rely on the resonant electron oscillations of thin metallic films or metallic nanoparticles functionalized on fiber surfaces. Coupled with the new advances in functional nanomaterials as well as fiber structure design and fabrication in recent years, new solutions continue to emerge to further improve the fiber-optic plasmonic sensors’ performances in terms of sensitivity, specificity and biocompatibility. For instance, 2D materials like graphene can enhance the surface plasmon intensity at the metallic film surface due to the plasmon–matter interaction. Two-dimensional (2D) morphology of transition metal oxides can be doped with abundant free electrons to facilitate intrinsic plasmonics in visible or near-infrared frequencies, realizing exceptional field confinement and high sensitivity detection of analyte molecules. Gold nanoparticles capped with macrocyclic supramolecules show excellent selectivity to target biomolecules and ultralow limits of detection. Moreover, specially designed microstructured optical fibers are able to achieve high birefringence that can suppress the output inaccuracy induced by polarization crosstalk and meanwhile deliver promising sensitivity. This review aims to reveal and explore the frontiers of such hybrid plasmonic fiber-optic platforms in various sensing applications. |
| first_indexed | 2024-03-10T19:18:29Z |
| format | Article |
| id | doaj.art-f7ee12aeeb2d41278485f74c10d1d670 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T19:18:29Z |
| publishDate | 2020-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-f7ee12aeeb2d41278485f74c10d1d6702023-11-20T03:13:03ZengMDPI AGSensors1424-82202020-06-012011326610.3390/s20113266Hybrid Plasmonic Fiber-Optic SensorsMiao Qi0Nancy Meng Ying Zhang1Kaiwei Li2Swee Chuan Tjin3Lei Wei4School of Electrical and Electronic Engineering and the Photonics Institute, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, SingaporeSchool of Electrical and Electronic Engineering and the Photonics Institute, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, SingaporeInstitute of Photonics Technology, Jinan University, Guangzhou 510632, ChinaSchool of Electrical and Electronic Engineering and the Photonics Institute, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, SingaporeSchool of Electrical and Electronic Engineering and the Photonics Institute, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, SingaporeWith the increasing demand of achieving comprehensive perception in every aspect of life, optical fibers have shown great potential in various applications due to their highly-sensitive, highly-integrated, flexible and real-time sensing capabilities. Among various sensing mechanisms, plasmonics based fiber-optic sensors provide remarkable sensitivity benefiting from their outstanding plasmon–matter interaction. Therefore, surface plasmon resonance (SPR) and localized SPR (LSPR)-based hybrid fiber-optic sensors have captured intensive research attention. Conventionally, SPR- or LSPR-based hybrid fiber-optic sensors rely on the resonant electron oscillations of thin metallic films or metallic nanoparticles functionalized on fiber surfaces. Coupled with the new advances in functional nanomaterials as well as fiber structure design and fabrication in recent years, new solutions continue to emerge to further improve the fiber-optic plasmonic sensors’ performances in terms of sensitivity, specificity and biocompatibility. For instance, 2D materials like graphene can enhance the surface plasmon intensity at the metallic film surface due to the plasmon–matter interaction. Two-dimensional (2D) morphology of transition metal oxides can be doped with abundant free electrons to facilitate intrinsic plasmonics in visible or near-infrared frequencies, realizing exceptional field confinement and high sensitivity detection of analyte molecules. Gold nanoparticles capped with macrocyclic supramolecules show excellent selectivity to target biomolecules and ultralow limits of detection. Moreover, specially designed microstructured optical fibers are able to achieve high birefringence that can suppress the output inaccuracy induced by polarization crosstalk and meanwhile deliver promising sensitivity. This review aims to reveal and explore the frontiers of such hybrid plasmonic fiber-optic platforms in various sensing applications.https://www.mdpi.com/1424-8220/20/11/3266optical fibershybrid plasmonic sensorssurface plasmon resonancelocalized surface plasmon resonance2D materialsgraphene |
| spellingShingle | Miao Qi Nancy Meng Ying Zhang Kaiwei Li Swee Chuan Tjin Lei Wei Hybrid Plasmonic Fiber-Optic Sensors Sensors optical fibers hybrid plasmonic sensors surface plasmon resonance localized surface plasmon resonance 2D materials graphene |
| title | Hybrid Plasmonic Fiber-Optic Sensors |
| title_full | Hybrid Plasmonic Fiber-Optic Sensors |
| title_fullStr | Hybrid Plasmonic Fiber-Optic Sensors |
| title_full_unstemmed | Hybrid Plasmonic Fiber-Optic Sensors |
| title_short | Hybrid Plasmonic Fiber-Optic Sensors |
| title_sort | hybrid plasmonic fiber optic sensors |
| topic | optical fibers hybrid plasmonic sensors surface plasmon resonance localized surface plasmon resonance 2D materials graphene |
| url | https://www.mdpi.com/1424-8220/20/11/3266 |
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