TEM (a, b, and c) images of prepared mesoporous silica nanoparticles with mean outer diameter: (a) 20nm, (b) 45nm, and (c) 80nm. SEM (d) image corresponding to (b). The insets are a high magnification of mesoporous silica particle.
The Definition of a Monochrome Laser Printer. Monochrome laser printers are machines that print text and images from computers by using a laser beam to control where a single color is applied to paper. They're often faster than other types of printers and can generally produce large numbers of black-and-white documents cheaper than other printers.
platinum prints also called platinotypes are photographic prints made by a monochrome printing process the platinum tones range from warm black to reddish brown to expanded mid tone grays that are unobtainable in silver prints unlike the silver print process platinum lies on the paper surface while silver lies in a gelatin or albumen emulsion that coats the paper