Depositing very thin organic films on the surface of arrays of asymmetric split-ring resonators (A-SRRs) produces a shift in their resonance spectra that can be utilized for sensitive analyte detection. Here we show that when poly-methyl-methacrylate (PMMA) is used as an organic probe (analyte) on top of the A-SRR array, the phase and amplitude of a characteristic molecular Fano resonance associated with a carbonyl bond changes according to the spectral positions of the trapped mode resonance of the A-SRRs and their plasmonic reflection peaks.
- asymmetric split-ring resonators
- optical sensors
Lahiri, B., McMeekin, S. G., De La Rue, R. M., & Johnson, N. P. (2013). Enhanced Fano resonance of organic material films deposited on arrays of asymmetric split-ring resonators (A-SRRs). Optics Express, 21(8), 9343-9352. https://doi.org/10.1364/OE.21.009343