In this work, a pixeled plasmonic metasurface has been employed as a Surface Enhanced InfraRed Absorption (SEIRA) spectroscopy platform to detect small amounts of compounds containing a peculiar IR signature. In particular, the N3 bonds vibrational feature (placed around 2100 cm−1) has been chosen due to its location far from the fingerprint region. The proposed platform has demonstrated its capability to detect and amplify the selected IR signature with a compound containing the abovementioned vibrational feature. In particular, the K molecule (Ac-Lys(N3)-Cys-NH2) has been considered as a proof of principle molecule, showing both a strong absorption peak corresponding to the detection of the N3 bonds and a maximum redshift of 65 cm−1 as compared to the naked sensors.
Detection of Selected IR Signatures Through SEIRA Sensing Platform
Moccia, Massimo;Galdi, Vincenzo;
2025-01-01
Abstract
In this work, a pixeled plasmonic metasurface has been employed as a Surface Enhanced InfraRed Absorption (SEIRA) spectroscopy platform to detect small amounts of compounds containing a peculiar IR signature. In particular, the N3 bonds vibrational feature (placed around 2100 cm−1) has been chosen due to its location far from the fingerprint region. The proposed platform has demonstrated its capability to detect and amplify the selected IR signature with a compound containing the abovementioned vibrational feature. In particular, the K molecule (Ac-Lys(N3)-Cys-NH2) has been considered as a proof of principle molecule, showing both a strong absorption peak corresponding to the detection of the N3 bonds and a maximum redshift of 65 cm−1 as compared to the naked sensors.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
