Figure 4
(a) Average, time-dependent FTIR spectra of the collagen–Si3N4 system (the insets show the optical image of the sample and zoom-in of the 2050–2300 cm−1 spectral range); chemogram image for the integrated (2120–2200 cm−1) peak area of the Si—H band: (b) right after; (c) day after; (d) two days after the HD irradiation. |