Fig. 2.

(a) Optical layout of the scanning OI-RD microscope. A functionalized glass slide with a microarray printed on the bottom surface is installed in a fluidic chamber assembly. An illumination laser beam is raster swept across the microarray with a scan mirror assembly for y-scan; a linear translation stage moves the fluidic chamber assembly with respect to the illumination optics in the orthogonal direction for x-scan. (b) The fluidic chamber assembly showing the 2 cm×4 cm accessible area of the glass slide. (c) Side view of the microscope illustrating the y-scan. OI-RD, oblique-incidence reflectivity difference.