. >> police sent both pieces to glen schubert. >> the first exam i did physically then was try and matchal match. >> but the ends were too frayed for any sort of comparison. but under a microscope, schubert was able to find similarities. >> i was able to determine that they were both similar knit, jersey stitch knit pattern. >> next, using high magnification, schubert found another striking similarity. both pieces contained some unique chemical properties. >> the titanium dioxide is the small little dots. those are just particles they put in, synthetic fibers to keep them from being too shiny. and in this particular case, the moderate amount of the titanium dioxide particles in both samples. >> to see if the colors were the same, schubert turned to microspectral photometry. >> the spectra is very unique. it had several peaks, which is a little unusual in color fibers. so the fact that it had several peaks that was very consistent between two samples made this color comparison very unique. >> since they were both dyed the same color, had the same amount of titanium dioxide and were the sa