Reaction scheme for the synthesis.
Reflectivity spectra of PSi based 1D photonic crystals before and after PCL infiltration. (a) PSi Bragg mirror and (b) PSi microcavity.
Comparison between polymer coated (upper plot) and uncoated (lower plot) PSi structures before (black) and after (red) dipping in NaOH solution. (a) PSi Bragg mirror and (b) PSi -cavity.
The PSi polymer modified structures still works after alkaline exposure as optical transducers for vapor detection. (a) The characteristic redshifts of the optical spectra (left Bragg; right -cavity) on exposure to methanol, isopropanol, and ethanol. (b) Determination of the sensitivity to refractive index changes of the optical transducers (left Bragg; right -cavity).
(a) Schematic of the immobilization chemistry between the and the 5(6)-carboxyfluorescein -hydroxysuccinimide ester. (b) Fluorescence image of the after FITC incubation. (c) Fluorescence image of the control sample. (d) Peak shift after FITC incubation.
Volatile organic substances used to test sensing ability of the PSi/PCL Bragg mirror together with the values of the liquid phases refractive indexes.
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