Design of an Aluminum/Polymer Plasmonic 2D Crystal for Label-Free Optical Biosensing
A design study of a nanostructured two-dimensional plasmonic crystal based on aluminum and polymeric material for label-free optical biosensing is presented. The structure is formed of Al nanohole and nanodisk array layers physically separated by a polymeric film. The photonic configuration was anal...
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| Format: | Article |
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MDPI AG
2018-10-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/18/10/3335 |
| _version_ | 1811297644543213568 |
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| author | Luca Tramarin Carlos Angulo Barrios |
| author_facet | Luca Tramarin Carlos Angulo Barrios |
| author_sort | Luca Tramarin |
| collection | DOAJ |
| description | A design study of a nanostructured two-dimensional plasmonic crystal based on aluminum and polymeric material for label-free optical biosensing is presented. The structure is formed of Al nanohole and nanodisk array layers physically separated by a polymeric film. The photonic configuration was analyzed through finite-difference time-domain (FDTD) simulations. The calculated spectral reflectance of the device exhibits a surface plasmon polariton (SPP) resonance feature sensitive to the presence of a modeled biolayer adhered onto the metal surfaces. Simulations also reveal that the Al disks suppress an undesired SPP resonance, improving the device performance in terms of resolution as compared to that of a similar configuration without Al disks. On the basis of manufacturability issues, nanohole diameter and depth were considered as design parameters, and a multi-objective optimization process was employed to determine the optimum dimensional values from both performance and fabrication points of view. The effect of Al oxidation, which is expected to occur in an actual device, was also studied. |
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| format | Article |
| id | doaj.art-c9e05b959ce44798b03e1004723b22a6 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-13T06:07:21Z |
| publishDate | 2018-10-01 |
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| series | Sensors |
| spelling | doaj.art-c9e05b959ce44798b03e1004723b22a62022-12-22T02:59:12ZengMDPI AGSensors1424-82202018-10-011810333510.3390/s18103335s18103335Design of an Aluminum/Polymer Plasmonic 2D Crystal for Label-Free Optical BiosensingLuca Tramarin0Carlos Angulo Barrios1Instituto de Sistemas Optoelectrónicos y Microtecnología (ISOM), ETSI Telecomunicación, Universidad Politécnica de Madrid, Ciudad Universitaria s/n, 28040 Madrid, SpainInstituto de Sistemas Optoelectrónicos y Microtecnología (ISOM), ETSI Telecomunicación, Universidad Politécnica de Madrid, Ciudad Universitaria s/n, 28040 Madrid, SpainA design study of a nanostructured two-dimensional plasmonic crystal based on aluminum and polymeric material for label-free optical biosensing is presented. The structure is formed of Al nanohole and nanodisk array layers physically separated by a polymeric film. The photonic configuration was analyzed through finite-difference time-domain (FDTD) simulations. The calculated spectral reflectance of the device exhibits a surface plasmon polariton (SPP) resonance feature sensitive to the presence of a modeled biolayer adhered onto the metal surfaces. Simulations also reveal that the Al disks suppress an undesired SPP resonance, improving the device performance in terms of resolution as compared to that of a similar configuration without Al disks. On the basis of manufacturability issues, nanohole diameter and depth were considered as design parameters, and a multi-objective optimization process was employed to determine the optimum dimensional values from both performance and fabrication points of view. The effect of Al oxidation, which is expected to occur in an actual device, was also studied.http://www.mdpi.com/1424-8220/18/10/3335label-free optical biosensorplasmon resonance biosensornanostructured surfacealuminumdesign optimizationphotonic modeling |
| spellingShingle | Luca Tramarin Carlos Angulo Barrios Design of an Aluminum/Polymer Plasmonic 2D Crystal for Label-Free Optical Biosensing Sensors label-free optical biosensor plasmon resonance biosensor nanostructured surface aluminum design optimization photonic modeling |
| title | Design of an Aluminum/Polymer Plasmonic 2D Crystal for Label-Free Optical Biosensing |
| title_full | Design of an Aluminum/Polymer Plasmonic 2D Crystal for Label-Free Optical Biosensing |
| title_fullStr | Design of an Aluminum/Polymer Plasmonic 2D Crystal for Label-Free Optical Biosensing |
| title_full_unstemmed | Design of an Aluminum/Polymer Plasmonic 2D Crystal for Label-Free Optical Biosensing |
| title_short | Design of an Aluminum/Polymer Plasmonic 2D Crystal for Label-Free Optical Biosensing |
| title_sort | design of an aluminum polymer plasmonic 2d crystal for label free optical biosensing |
| topic | label-free optical biosensor plasmon resonance biosensor nanostructured surface aluminum design optimization photonic modeling |
| url | http://www.mdpi.com/1424-8220/18/10/3335 |
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