Performing modulation spectroscopy by directing a probe beam and a pump beam at a strained semiconductor sample, modulating the pump beam, and reflecting the probe beam into a detector. A first stage of film-forming process is performed by using RF magnetron sputtering, so as to form a nano structure film on a substrate, in which the nano structure film is a petal-like structure composed of a plurality of nano graphite walls. This image data is analyzed for the presence of watermark data identifying a graphic on the document. The method of the invention also utilizes a novel startup procedure, a novel emergency shutdown procedure, a novel maximum cool down procedure, and a novel carbon monoxide monitoring procedure. The percentage of input phosphate that remains in the residue is less than would occur in the method with no lignin sulfonate. If it is determined that the one or more filters do not validate the parameters for the API function, the execution of the API function may be aborted.