High-Q Plasmonic Fano Resonance for Multiband Surface-Enhanced Infrared Absorption of Molecular Vibrational Sensing
Realizing strong plasmon–vibration interactions between infrared-active vibrational bands and resonating plasmonic metasurfaces opens up the possibilities for ultrasensitive label-free detection of chemical and biological agents. The key prerequisites for exploiting strong plasmon–vibration interact...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2017
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| Online Access: | https://hdl.handle.net/10356/85787 http://hdl.handle.net/10220/43869 |
| _version_ | 1826116490824253440 |
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| author | Dayal, Govind Chin, Xin Yu Soci, Cesare Singh, Ranjan |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Dayal, Govind Chin, Xin Yu Soci, Cesare Singh, Ranjan |
| author_sort | Dayal, Govind |
| collection | NTU |
| description | Realizing strong plasmon–vibration interactions between infrared-active vibrational bands and resonating plasmonic metasurfaces opens up the possibilities for ultrasensitive label-free detection of chemical and biological agents. The key prerequisites for exploiting strong plasmon–vibration interactions in practical spectroscopy are structures, which provide giant field enhancement that highly depends on the line-width and line-shape of the plasmonic resonances supported by these structures. Here, multiband surface-enhanced infrared absorption (SEIRA) of poly(methyl methacrylate) (PMMA) is demonstrated. The line-width and line-shape of the proposed plasmonic metasurface can be readily tuned to match the multiple vibrational modes of the PMMA to sense the prohibitively weak fingerprints. The tightly coupled system exhibits mode splitting in the optical spectrum resulting in new hybrid plasmon–phonon modes of PMMA. Such a strong interaction of high-Q Fano resonances to multiple phonon modes in ultrathin film analytes over a broadband spectral range could be step forward towards ultrasensitive sensing of biological and chemical molecules. |
| first_indexed | 2024-10-01T04:12:35Z |
| format | Journal Article |
| id | ntu-10356/85787 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:12:35Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | ntu-10356/857872020-03-07T12:37:04Z High-Q Plasmonic Fano Resonance for Multiband Surface-Enhanced Infrared Absorption of Molecular Vibrational Sensing Dayal, Govind Chin, Xin Yu Soci, Cesare Singh, Ranjan School of Physical and Mathematical Sciences Sensing Fano Resonances Realizing strong plasmon–vibration interactions between infrared-active vibrational bands and resonating plasmonic metasurfaces opens up the possibilities for ultrasensitive label-free detection of chemical and biological agents. The key prerequisites for exploiting strong plasmon–vibration interactions in practical spectroscopy are structures, which provide giant field enhancement that highly depends on the line-width and line-shape of the plasmonic resonances supported by these structures. Here, multiband surface-enhanced infrared absorption (SEIRA) of poly(methyl methacrylate) (PMMA) is demonstrated. The line-width and line-shape of the proposed plasmonic metasurface can be readily tuned to match the multiple vibrational modes of the PMMA to sense the prohibitively weak fingerprints. The tightly coupled system exhibits mode splitting in the optical spectrum resulting in new hybrid plasmon–phonon modes of PMMA. Such a strong interaction of high-Q Fano resonances to multiple phonon modes in ultrathin film analytes over a broadband spectral range could be step forward towards ultrasensitive sensing of biological and chemical molecules. MOE (Min. of Education, S’pore) 2017-10-12T07:36:33Z 2019-12-06T16:10:12Z 2017-10-12T07:36:33Z 2019-12-06T16:10:12Z 2016 Journal Article Dayal, G., Chin, X. Y., Soci, C., & Singh, R. (2017). High-Q Plasmonic Fano Resonance for Multiband Surface-Enhanced Infrared Absorption of Molecular Vibrational Sensing. Advanced Optical Materials, 5(2), 1600559-. 2195-1071 https://hdl.handle.net/10356/85787 http://hdl.handle.net/10220/43869 10.1002/adom.201600559 en Advanced Optical Materials © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. |
| spellingShingle | Sensing Fano Resonances Dayal, Govind Chin, Xin Yu Soci, Cesare Singh, Ranjan High-Q Plasmonic Fano Resonance for Multiband Surface-Enhanced Infrared Absorption of Molecular Vibrational Sensing |
| title | High-Q Plasmonic Fano Resonance for Multiband Surface-Enhanced Infrared Absorption of Molecular Vibrational Sensing |
| title_full | High-Q Plasmonic Fano Resonance for Multiband Surface-Enhanced Infrared Absorption of Molecular Vibrational Sensing |
| title_fullStr | High-Q Plasmonic Fano Resonance for Multiband Surface-Enhanced Infrared Absorption of Molecular Vibrational Sensing |
| title_full_unstemmed | High-Q Plasmonic Fano Resonance for Multiband Surface-Enhanced Infrared Absorption of Molecular Vibrational Sensing |
| title_short | High-Q Plasmonic Fano Resonance for Multiband Surface-Enhanced Infrared Absorption of Molecular Vibrational Sensing |
| title_sort | high q plasmonic fano resonance for multiband surface enhanced infrared absorption of molecular vibrational sensing |
| topic | Sensing Fano Resonances |
| url | https://hdl.handle.net/10356/85787 http://hdl.handle.net/10220/43869 |
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