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.
Monochrome Laser Printers. Get More Bang for Your Buck with Black and White Laser Printers from Brother. A Brother monochrome laser printer is designed for speed, but does not compromise quality to achieve it. With select models printing up to 42 pages per minute, you can spend more time being productive either at home or at work and less time waiting for your documents to print.