Inflection point kinetics: plasmonic transition of silver and copper doped glasses.

Two variants of an inflection point (IP) method for analysis of large sets of spectra, acquired in real time during non-plasmonic to plasmonic glass transformation are proposed. One of the variants is based on the time evolution of the spectral inflection point position, IP, while the second one follows the time evolution of the spectral inflection point slope, IP. Both methods yield activation energy (AE) of the metal precipitation in strong agreement with previously reported values, obtained the standard kinetic approaches.