A method for encoding a first set of pixels in a first image in a sequence of images is described. The second core is generally disposed within the first core and is operable to receive the excitation laser beam from the laser and transmit the excitation laser beam to a sample to be tested. Mmn+Rr+AlExSiyOz where M represents a combination of potassium and sodium exchangeable cations, R is a singly charged organoammonium cation such as the propyltrimethylammonium cation and E is a framework element such as gallium. A manifest is created in the electronic document. Other embodiments are described and claimed.