Self-organized nanorod arrays for large-area surface-enhanced infrared absorption
Capabilities of highly sensitive surface-enhanced infrared absorption (SEIRA) spectroscopy are demonstrated by exploiting large-area templates (cm2) based on self-organized (SO) nanorod antennas. We engineered highly dense arrays of gold nanorod antennas featuring polarization-sensitive localized pl...
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| Hauptverfasser: | , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
4 March 2020
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| In: |
ACS applied materials & interfaces
Year: 2020, Jahrgang: 12, Heft: 9, Pages: 11155-11162 |
| ISSN: | 1944-8252 |
| DOI: | 10.1021/acsami.9b19719 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1021/acsami.9b19719
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| Verfasserangaben: | M.C. Giordano, M. Tzschoppe, M. Barelli, J. Vogt, C. Huck, F. Canepa, A. Pucci, and F. Buatier de Mongeot |
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| 245 | 1 | 0 | |a Self-organized nanorod arrays for large-area surface-enhanced infrared absorption |c M.C. Giordano, M. Tzschoppe, M. Barelli, J. Vogt, C. Huck, F. Canepa, A. Pucci, and F. Buatier de Mongeot |
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| 520 | |a Capabilities of highly sensitive surface-enhanced infrared absorption (SEIRA) spectroscopy are demonstrated by exploiting large-area templates (cm2) based on self-organized (SO) nanorod antennas. We engineered highly dense arrays of gold nanorod antennas featuring polarization-sensitive localized plasmon resonances, tunable over a broadband near- and mid-infrared (IR) spectrum, in overlap with the so-called “functional group” window. We demonstrate polarization-sensitive SEIRA activity, homogeneous over macroscopic areas and stable in time, by exploiting prototype self-assembled monolayers of IR-active octadecanthiol (ODT) molecules. The strong coupling between the plasmonic excitation and molecular stretching modes gives rise to characteristic Fano resonances in SEIRA. The SO engineering of the active hotspots in the arrays allows us to achieve signal amplitude improved up to 5.7%. This figure is competitive to the response of lithographic nanoantennas and is stable when the optical excitation spot varies from the micro- to macroscale, thus enabling highly sensitive SEIRA spectroscopy with cost-effective nanosensor devices. | ||
| 700 | 1 | |a Tzschoppe, Michael |d 1991- |e VerfasserIn |0 (DE-588)1155250222 |0 (DE-627)1016567154 |0 (DE-576)501492577 |4 aut | |
| 700 | 1 | |a Barelli, M. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Vogt, Jochen |e VerfasserIn |0 (DE-588)1070416789 |0 (DE-627)823803252 |0 (DE-576)430045557 |4 aut | |
| 700 | 1 | |a Huck, Christian |e VerfasserIn |0 (DE-588)1081576340 |0 (DE-627)846342065 |0 (DE-576)454553374 |4 aut | |
| 700 | 1 | |a Canepa, F. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Pucci, Annemarie |e VerfasserIn |0 (DE-588)1020648783 |0 (DE-627)691291969 |0 (DE-576)361698739 |4 aut | |
| 700 | 1 | |a Buatier de Mongeot, F. |e VerfasserIn |4 aut | |
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