Ultra-sensitive slot-waveguide-enhanced Raman spectroscopy for aqueous solutions of non-polar compounds using a functionalized silicon nitride photonic integrated circuit
We demonstrate an ultra-sensitive waveguide-enhanced Raman sensor for low concentration organic compounds dissolved in water. The spectra are obtained using silicon nitride slot waveguides coated with a thin film of hexamethyldisilazane-modified mesoporous silica. Enriched locally by 600-fold within...
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| Veröffentlicht in: | Optics letters 2021-03, Vol.46 (5), p.1153-1156 |
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| container_issue | 5 |
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| container_title | Optics letters |
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| creator | Liu, Zuyang Zhao, Haolan Baumgartner, Bettina Lendl, Bernhard Stassen, Andim Skirtach, Andre Thomas, Nicolas Le Baets, Roel |
| description | We demonstrate an ultra-sensitive waveguide-enhanced Raman sensor for low concentration organic compounds dissolved in water. The spectra are obtained using silicon nitride slot waveguides coated with a thin film of hexamethyldisilazane-modified mesoporous silica. Enriched locally by 600-fold within the coating, a micromolar level of cyclohexanone is probed. The sensor is also capable of simultaneous quantification of multiple analytes, and the adsorbed analytes can be completely released from the coating. These properties make this on-chip Raman sensor promising for diverse applications, especially for the monitoring of non-polar organics and biomolecules in aqueous environments. |
| doi_str_mv | 10.1364/OL.416464 |
| format | Article |
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The spectra are obtained using silicon nitride slot waveguides coated with a thin film of hexamethyldisilazane-modified mesoporous silica. Enriched locally by 600-fold within the coating, a micromolar level of cyclohexanone is probed. The sensor is also capable of simultaneous quantification of multiple analytes, and the adsorbed analytes can be completely released from the coating. 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The spectra are obtained using silicon nitride slot waveguides coated with a thin film of hexamethyldisilazane-modified mesoporous silica. Enriched locally by 600-fold within the coating, a micromolar level of cyclohexanone is probed. The sensor is also capable of simultaneous quantification of multiple analytes, and the adsorbed analytes can be completely released from the coating. These properties make this on-chip Raman sensor promising for diverse applications, especially for the monitoring of non-polar organics and biomolecules in aqueous environments.</abstract><cop>United States</cop><pub>Optical Society of America</pub><pmid>33649680</pmid><doi>10.1364/OL.416464</doi><tpages>4</tpages><orcidid>https://orcid.org/0000-0003-4797-9642</orcidid><orcidid>https://orcid.org/0000-0003-3990-1634</orcidid><orcidid>https://orcid.org/0000-0002-4468-7620</orcidid></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0146-9592 |
| ispartof | Optics letters, 2021-03, Vol.46 (5), p.1153-1156 |
| issn | 0146-9592 1539-4794 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_2495406095 |
| source | Optica Publishing Group Journals |
| subjects | Aqueous environments Aqueous solutions Biomolecules Cyclohexanone Integrated circuits Organic compounds Raman spectroscopy Sensors Silicon dioxide Silicon nitride Spectrum analysis Thin films Waveguides |
| title | Ultra-sensitive slot-waveguide-enhanced Raman spectroscopy for aqueous solutions of non-polar compounds using a functionalized silicon nitride photonic integrated circuit |
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