Plasmonic Photonic-Crystal Slabs: Visualization of the Bloch Surface Wave Resonance for an Ultrasensitive, Robust and Reusable Optical Biosensor
A one-dimensional photonic crystal (PhC) with termination by a metal film—a plasmonic photonic-crystal slab—has been theoretically analyzed for its optical response at a variation of the dielectric permittivity of an analyte and at a condition simulating the molecular binding event. Visualization of...
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| Format: | Article |
| Language: | English |
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MDPI AG
2014-12-01
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| Series: | Crystals |
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| Online Access: | http://www.mdpi.com/2073-4352/4/4/498 |
| _version_ | 1811263074270707712 |
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| author | Alexander V. Baryshev Alexander M. Merzlikin |
| author_facet | Alexander V. Baryshev Alexander M. Merzlikin |
| author_sort | Alexander V. Baryshev |
| collection | DOAJ |
| description | A one-dimensional photonic crystal (PhC) with termination by a metal film—a plasmonic photonic-crystal slab—has been theoretically analyzed for its optical response at a variation of the dielectric permittivity of an analyte and at a condition simulating the molecular binding event. Visualization of the Bloch surface wave resonance (SWR) was done with the aid of plasmon absorption in a dielectric/metal/dielectric sandwich terminating a PhC. An SWR peak in spectra of such a plasmonic photonic crystal (PPhC) slab comprising a noble or base metal layer was shown to be sensitive to a negligible variation of refractive index of a medium adjoining to the slab. As a consequence, the considered PPhC-based optical sensors exhibited an enhanced sensitivity and a good robustness in comparison with the conventional surface-plasmon and Bloch surface wave sensors. The PPhC biosensors can be of practical importance because the metal layer is protected by a capping dielectric layer from contact with analytes and, consequently, from deterioration. |
| first_indexed | 2024-04-12T19:38:16Z |
| format | Article |
| id | doaj.art-0d337e069d784165a19c01fe00e4004b |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-04-12T19:38:16Z |
| publishDate | 2014-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-0d337e069d784165a19c01fe00e4004b2022-12-22T03:19:09ZengMDPI AGCrystals2073-43522014-12-014449850810.3390/cryst4040498cryst4040498Plasmonic Photonic-Crystal Slabs: Visualization of the Bloch Surface Wave Resonance for an Ultrasensitive, Robust and Reusable Optical BiosensorAlexander V. Baryshev0Alexander M. Merzlikin1Ioffe Physical-Technical Institute, Politekhnicheskaya 26, St. Petersburg 194021, RussiaInstitute for Theoretical and Applied Electromagnetics, Izhorskaya 13, Moscow 125412, RussiaA one-dimensional photonic crystal (PhC) with termination by a metal film—a plasmonic photonic-crystal slab—has been theoretically analyzed for its optical response at a variation of the dielectric permittivity of an analyte and at a condition simulating the molecular binding event. Visualization of the Bloch surface wave resonance (SWR) was done with the aid of plasmon absorption in a dielectric/metal/dielectric sandwich terminating a PhC. An SWR peak in spectra of such a plasmonic photonic crystal (PPhC) slab comprising a noble or base metal layer was shown to be sensitive to a negligible variation of refractive index of a medium adjoining to the slab. As a consequence, the considered PPhC-based optical sensors exhibited an enhanced sensitivity and a good robustness in comparison with the conventional surface-plasmon and Bloch surface wave sensors. The PPhC biosensors can be of practical importance because the metal layer is protected by a capping dielectric layer from contact with analytes and, consequently, from deterioration.http://www.mdpi.com/2073-4352/4/4/498plasmonic photonic crystalsurface Bloch wavesurface plasmonbiosensor |
| spellingShingle | Alexander V. Baryshev Alexander M. Merzlikin Plasmonic Photonic-Crystal Slabs: Visualization of the Bloch Surface Wave Resonance for an Ultrasensitive, Robust and Reusable Optical Biosensor Crystals plasmonic photonic crystal surface Bloch wave surface plasmon biosensor |
| title | Plasmonic Photonic-Crystal Slabs: Visualization of the Bloch Surface Wave Resonance for an Ultrasensitive, Robust and Reusable Optical Biosensor |
| title_full | Plasmonic Photonic-Crystal Slabs: Visualization of the Bloch Surface Wave Resonance for an Ultrasensitive, Robust and Reusable Optical Biosensor |
| title_fullStr | Plasmonic Photonic-Crystal Slabs: Visualization of the Bloch Surface Wave Resonance for an Ultrasensitive, Robust and Reusable Optical Biosensor |
| title_full_unstemmed | Plasmonic Photonic-Crystal Slabs: Visualization of the Bloch Surface Wave Resonance for an Ultrasensitive, Robust and Reusable Optical Biosensor |
| title_short | Plasmonic Photonic-Crystal Slabs: Visualization of the Bloch Surface Wave Resonance for an Ultrasensitive, Robust and Reusable Optical Biosensor |
| title_sort | plasmonic photonic crystal slabs visualization of the bloch surface wave resonance for an ultrasensitive robust and reusable optical biosensor |
| topic | plasmonic photonic crystal surface Bloch wave surface plasmon biosensor |
| url | http://www.mdpi.com/2073-4352/4/4/498 |
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