The MP dispersions, dry mounted between a glass slide and a cover slip, were placed cover slip down in the automated stage of an Nikon Ti-2 microscope and images were captured with a Photometrics Prime BSI camera. A 10×/ 0.45 NA (Plan Apo, Nikon) was used. A field of view at the top-left of the cover slip served as the set point for the acquisition of the first image. The automated stage was then used to take 64 images in an 8×8 grid (∼ 4.5 mm × 4.5 mm). The software then digitally stitched the images to form a single, wide-field, composite image. After saving the image, the stage was manually moved ∼1 cm to the right of and/or below the previous region of interest. This process was repeated 9 times so that the dispersion was imaged in 2 rows of 5 composite images, spanning the length and breadth of the MP dispersion. After saving the images, the objective was switched to a 40×/0.75 NA (Plan Apo, Nikon), and the process was repeated. The composite images under 40× magnification were ∼1.1 mm × 1.1 mm, and were attempted to be taken within the regions of the 10× composite regions (Supplementary Information 2).