Various Applications of the FLPR Sensors (IMAGE) Far Eastern Federal University Caption Various applications of the First-order lattice plasmonic resonance (FLPR) a) Spectral response of the nanovoid array SP sensor caused by injection of saturated ethanol vapour. (b) Squared normalised EM-field amplitude E2/E2 0 calculated near the surface of the nanovoid array immersed in toluene, upon its excitation from the top by a linearly-polarised source at a 2.5-μm wavelength. (c) FTIR reflection spectra of the nanovoid array in air and under the toluene liquid layer. The dashed curve provides the contribution of the nanovoid array to the reflection spectrum, if taken without the absorption of toluene. The bottom panel shows the FTIR reflection from the smooth Au film surface covered by toluene obtained under the same conditions. Credit FEFU press office Usage Restrictions FEFU press office License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.