The grating of micro-holes as a chemosensor with rhodamine 6G molecules

Chemo-sensing of the produced 4×4 mm2 gratings of micro-holes (approx. half-million of micro-holes) on the 30-nm thick silver film on the IR-transparent CaF2 substrate was investigated in terms of their resonant EOT-enhanced IR-transmission as surface-enhanced IR-absorption (SEIRA). Selective IR abs...

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Bibliographic Details
Published in:Journal of physics. Conference series 2018-09, Vol.1092 (1), p.12151
Main Authors: Nguyen, T T H, Kudryashov, S I, Danilov, P A, Ionin, A A, Khmelnitskii, R A, Rudenko, A A, Saraeva, I N
Format: Article
Language:English
Subjects:
Absorption
Chemical sensors
Chemoreceptors
Infrared radiation
Microholes
Rhodamine 6G
Substrates
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Summary:Chemo-sensing of the produced 4×4 mm2 gratings of micro-holes (approx. half-million of micro-holes) on the 30-nm thick silver film on the IR-transparent CaF2 substrate was investigated in terms of their resonant EOT-enhanced IR-transmission as surface-enhanced IR-absorption (SEIRA). Selective IR absorption at 1261 cm−1 enhanced by 455 times, was demonstrated for rhodamine 6G molecules. The reference absorption lines were taken near 2900 cm−1, where the IR radiation is freely channeling through the microholes, indicating the reference substrate coverage by the dye molecules for its relative internal calibration.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1092/1/012151