Figure 4. Normalized reflectance spectra for neat Sa (bottom),Se (center), and a mix of Sa:Se (top) deposited on an SS
substrate. Tentative band assignments are included.
Some preliminary bands assignments summarized in Table 1, are identified
in all bacteria, such as at 1642 - 1647 cm-1 Amide I,
1412 - 1422 cm-1 -C-C═O str (sym) of -COO, 1336 - 1344
cm-1, Amide III, 1247 cm-1-PO-PO–2 asymmetric (phosphate I) and 1028 - 1032
cm-1 Glycogen. Once the bands were assessed and
identified, the data were analyzed using principal component analysis
(PCA). Results obtained from the analysis are summarized in section 3.22
of this paper.
Table 1. QCL-GAP spectra proposed band assignments