Fig. 2: Fluorescent sector star target.
From: UV photonic integrated circuits for far-field structured illumination autofluorescence microscopy
a Schematic of the metal sector star target on borosillicate microscope slide with green fluorescent dyes coated on top. Thickness of the coated dye layer: h = 300 nm. b Scanning electron micrograph of the metal sector target. The orange solid circle points out the position where the grating pitch along the circle equals to 100 nm. The imaging is independently repeated five times. c Optical spectra of the UV exciting beam and the fluorescent dyes. λex: excitation wavelength, λem: emission wavelength. d to f Fluorescence images of the sector target illuminated by structured light for the D1, D2, and D3 orientations, respectively. Λex : modulation period of the fringe pattern.
