Plasmonic-Enhanced Infrared Absorption Platform for Broadband and Multiple Molecular Fingerprint Retrieval
The mid-infrared (mid-IR) region, often referred to as the molecular fingerprint region, encompasses the distinctive absorption spectra characteristic of numerous important molecules. However, the intrinsically small molecular absorption cross-sections, combined with the size mismatch between nanosc...
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MDPI AG
2025-02-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/15/4/284 |
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| author | Yulong Hu Zexing Zheng Huishan Ma Shuguang Zhu Yiming Yu Jie Hong Weiwei Tang Jiale He Libo Zhang Changlong Liu Guanhai Li Xiaoshuang Chen |
| author_facet | Yulong Hu Zexing Zheng Huishan Ma Shuguang Zhu Yiming Yu Jie Hong Weiwei Tang Jiale He Libo Zhang Changlong Liu Guanhai Li Xiaoshuang Chen |
| author_sort | Yulong Hu |
| collection | DOAJ |
| description | The mid-infrared (mid-IR) region, often referred to as the molecular fingerprint region, encompasses the distinctive absorption spectra characteristic of numerous important molecules. However, the intrinsically small molecular absorption cross-sections, combined with the size mismatch between nanoscale molecules and microscale mid-IR wavelengths, result in inherently weak light-molecule interactions. In this work, we propose a broadband, tunable platform based on plasmonic-enhanced infrared absorption for label-free retrieval of molecular fingerprints. By leveraging the strong near-field enhancement of the plasmonic structure, the platform significantly amplifies light-molecule interactions, enabling precise reconstruction of the fingerprint absorption spectra of target molecules. In addition, the proposed structure exhibits exceptional molecular detection capabilities across the wavelength range of 5–10 μm, with remarkable potential for distinguishing molecular mixture components. The results pave the way for the applications in chemical identification, biomedical diagnostics, environmental monitoring, and other interdisciplinary fields, which require miniaturized and high-precision sensing. |
| format | Article |
| id | doaj-art-81b086dc6e8d4abcb864fdbff0153595 |
| institution | OA Journals |
| issn | 2079-4991 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj-art-81b086dc6e8d4abcb864fdbff01535952025-08-20T02:03:28ZengMDPI AGNanomaterials2079-49912025-02-0115428410.3390/nano15040284Plasmonic-Enhanced Infrared Absorption Platform for Broadband and Multiple Molecular Fingerprint RetrievalYulong Hu0Zexing Zheng1Huishan Ma2Shuguang Zhu3Yiming Yu4Jie Hong5Weiwei Tang6Jiale He7Libo Zhang8Changlong Liu9Guanhai Li10Xiaoshuang Chen11College of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, ChinaCollege of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, ChinaCollege of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, ChinaCollege of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, ChinaCollege of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, ChinaCollege of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, ChinaCollege of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, ChinaCollege of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, ChinaCollege of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, ChinaCollege of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, ChinaCollege of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, ChinaCollege of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, ChinaThe mid-infrared (mid-IR) region, often referred to as the molecular fingerprint region, encompasses the distinctive absorption spectra characteristic of numerous important molecules. However, the intrinsically small molecular absorption cross-sections, combined with the size mismatch between nanoscale molecules and microscale mid-IR wavelengths, result in inherently weak light-molecule interactions. In this work, we propose a broadband, tunable platform based on plasmonic-enhanced infrared absorption for label-free retrieval of molecular fingerprints. By leveraging the strong near-field enhancement of the plasmonic structure, the platform significantly amplifies light-molecule interactions, enabling precise reconstruction of the fingerprint absorption spectra of target molecules. In addition, the proposed structure exhibits exceptional molecular detection capabilities across the wavelength range of 5–10 μm, with remarkable potential for distinguishing molecular mixture components. The results pave the way for the applications in chemical identification, biomedical diagnostics, environmental monitoring, and other interdisciplinary fields, which require miniaturized and high-precision sensing.https://www.mdpi.com/2079-4991/15/4/284mid-infraredmolecular fingerprinttunable plasmonic metasurfacesurface-enhanced infrared absorption |
| spellingShingle | Yulong Hu Zexing Zheng Huishan Ma Shuguang Zhu Yiming Yu Jie Hong Weiwei Tang Jiale He Libo Zhang Changlong Liu Guanhai Li Xiaoshuang Chen Plasmonic-Enhanced Infrared Absorption Platform for Broadband and Multiple Molecular Fingerprint Retrieval Nanomaterials mid-infrared molecular fingerprint tunable plasmonic metasurface surface-enhanced infrared absorption |
| title | Plasmonic-Enhanced Infrared Absorption Platform for Broadband and Multiple Molecular Fingerprint Retrieval |
| title_full | Plasmonic-Enhanced Infrared Absorption Platform for Broadband and Multiple Molecular Fingerprint Retrieval |
| title_fullStr | Plasmonic-Enhanced Infrared Absorption Platform for Broadband and Multiple Molecular Fingerprint Retrieval |
| title_full_unstemmed | Plasmonic-Enhanced Infrared Absorption Platform for Broadband and Multiple Molecular Fingerprint Retrieval |
| title_short | Plasmonic-Enhanced Infrared Absorption Platform for Broadband and Multiple Molecular Fingerprint Retrieval |
| title_sort | plasmonic enhanced infrared absorption platform for broadband and multiple molecular fingerprint retrieval |
| topic | mid-infrared molecular fingerprint tunable plasmonic metasurface surface-enhanced infrared absorption |
| url | https://www.mdpi.com/2079-4991/15/4/284 |
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