Microfluidic surface-enhanced infrared spectroscopy with semiconductor plasmonics for the fingerprint region
| Autor: | Antoine Chanuel, Benoit Charlot, Laurent Cerutti, Thierry Taliercio, F. Barho, M. Bomers, F. Gonzalez-Posada, A. Mezy |
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| Přispěvatelé: | Institut d’Electronique et des Systèmes (IES), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Composants à Nanostructure pour le moyen infrarouge (NANOMIR), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Matériaux, MicroCapteurs et Acoustique (M2A), Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC), sikemia |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Microfluidics Infrared spectroscopy 02 engineering and technology 010402 general chemistry 01 natural sciences Catalysis Spectral line Monolayer Chemical Engineering (miscellaneous) [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics Surface plasmon resonance Spectroscopy ComputingMilieux_MISCELLANEOUS Plasmon Fluid Flow and Transfer Processes business.industry Process Chemistry and Technology 021001 nanoscience & nanotechnology [SPI.TRON]Engineering Sciences [physics]/Electronics 0104 chemical sciences Semiconductor Chemistry (miscellaneous) [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic Optoelectronics 0210 nano-technology business |
| Zdroj: | Reaction Chemistry & Engineering Reaction Chemistry & Engineering, Royal Society of Chemistry, 2019, ⟨10.1039/C9RE00350A⟩ |
| ISSN: | 2058-9883 |
| DOI: | 10.1039/c9re00350a |
| Popis: | The combination of semiconductor plasmonics with microfluidics allows surface-enhanced infrared spectroscopy of molecules in the flow regime. Exploiting semiconductor plasmonics enables surface-enhanced mid-IR spectroscopy from 4 μm to 20 μm and accesses the so-called molecular fingerprint region from 6.7 μm to 20 μm (1500–500 cm−1). Besides addressing the whole fingerprint region and allowing the identification of molecules by database comparison, the III–V semiconductor material class allows potentially an integration of semiconductor-based IR-sources, IR-detectors and IR-resonators on-chip. Miniaturized plasmonic enhanced microfluidic mid-IR spectrometry has great potential to analyse and identify minute amounts of molecules in the flow regime. This work describes technological processing to combine semiconductor plasmonics and microfluidics. Two proof-of-concept prototypes were experimentally realized and subsequently tested. Measured mid-IR spectra allow to clearly distinguish ethanol and water by their respective IR-absorption characteristics when inserted into the microfluidic flow chamber. Additionally, a semiconductor surface plasmon resonance shift can be observed according to the inserted solvent. Finally, the formation of a self-assembled monolayer under flow conditions is demonstrated by an observable mid-IR surface plasmon resonance shift of 6 ± 1 cm−1 (140 ± 23 nm). |
| Databáze: | OpenAIRE |
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