Plasmonic and magnetoplasmonic interferometry for sensing
The use of plasmonic and magnetoplasmonic interferometers as refractometric-based sensors is studied theoretically, and their performance compared to that of the most commonly used plasmonic sensing technique, the surface plasmon resonance (SPR) sensor. The analysis is based on the evolution with th...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2013-01-01
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| Series: | New Journal of Physics |
| Online Access: | https://doi.org/10.1088/1367-2630/15/8/085021 |
| _version_ | 1797751370001940480 |
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| author | D Martín-Becerra G Armelles M U González A García-Martín |
| author_facet | D Martín-Becerra G Armelles M U González A García-Martín |
| author_sort | D Martín-Becerra |
| collection | DOAJ |
| description | The use of plasmonic and magnetoplasmonic interferometers as refractometric-based sensors is studied theoretically, and their performance compared to that of the most commonly used plasmonic sensing technique, the surface plasmon resonance (SPR) sensor. The analysis is based on the evolution with the refractive index of the physical parameters involved for each kind of sensor, as well as the behaviour of the actual measured quantity. Two kinds of sensing configurations, two-dimensional surface and three-dimensional bulk, are considered, and the spectral dependence of the three systems is also taken into account. We show that, although the plasmonic interferometer and the SPR system are based on the same physical parameter, namely the surface plasmon polariton (SPP) wavevector, the first offers better properties as its final sensitivity depends on the interferometer size and can thus be increased by its enlargement. For the magnetoplasmonic interferometer, on the other hand, a new physical parameter participates—the modulation of the SPP wavevector induced by an external applied magnetic field. This new parameter has a higher sensitivity to the refractive index than the SPP wavevector, so monitoring it can lead to sensors with increased properties. |
| first_indexed | 2024-03-12T16:47:29Z |
| format | Article |
| id | doaj.art-54265ac79ced495187057ea02399ba4b |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:47:29Z |
| publishDate | 2013-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-54265ac79ced495187057ea02399ba4b2023-08-08T11:30:01ZengIOP PublishingNew Journal of Physics1367-26302013-01-0115808502110.1088/1367-2630/15/8/085021Plasmonic and magnetoplasmonic interferometry for sensingD Martín-Becerra0G Armelles1M U González2A García-Martín3IMM-Instituto de Microelectrónica de Madrid (CNM-CSIC) , Isaac Newton 8, PTM, E-28760 Tres Cantos, Madrid, SpainIMM-Instituto de Microelectrónica de Madrid (CNM-CSIC) , Isaac Newton 8, PTM, E-28760 Tres Cantos, Madrid, SpainIMM-Instituto de Microelectrónica de Madrid (CNM-CSIC) , Isaac Newton 8, PTM, E-28760 Tres Cantos, Madrid, SpainIMM-Instituto de Microelectrónica de Madrid (CNM-CSIC) , Isaac Newton 8, PTM, E-28760 Tres Cantos, Madrid, SpainThe use of plasmonic and magnetoplasmonic interferometers as refractometric-based sensors is studied theoretically, and their performance compared to that of the most commonly used plasmonic sensing technique, the surface plasmon resonance (SPR) sensor. The analysis is based on the evolution with the refractive index of the physical parameters involved for each kind of sensor, as well as the behaviour of the actual measured quantity. Two kinds of sensing configurations, two-dimensional surface and three-dimensional bulk, are considered, and the spectral dependence of the three systems is also taken into account. We show that, although the plasmonic interferometer and the SPR system are based on the same physical parameter, namely the surface plasmon polariton (SPP) wavevector, the first offers better properties as its final sensitivity depends on the interferometer size and can thus be increased by its enlargement. For the magnetoplasmonic interferometer, on the other hand, a new physical parameter participates—the modulation of the SPP wavevector induced by an external applied magnetic field. This new parameter has a higher sensitivity to the refractive index than the SPP wavevector, so monitoring it can lead to sensors with increased properties.https://doi.org/10.1088/1367-2630/15/8/085021 |
| spellingShingle | D Martín-Becerra G Armelles M U González A García-Martín Plasmonic and magnetoplasmonic interferometry for sensing New Journal of Physics |
| title | Plasmonic and magnetoplasmonic interferometry for sensing |
| title_full | Plasmonic and magnetoplasmonic interferometry for sensing |
| title_fullStr | Plasmonic and magnetoplasmonic interferometry for sensing |
| title_full_unstemmed | Plasmonic and magnetoplasmonic interferometry for sensing |
| title_short | Plasmonic and magnetoplasmonic interferometry for sensing |
| title_sort | plasmonic and magnetoplasmonic interferometry for sensing |
| url | https://doi.org/10.1088/1367-2630/15/8/085021 |
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