"NANO: Glowing nanoparticles offer memory prospects"
A U.S. research team has discovered a family of discrete-sized ultra-bright nanoparticles in the red, green and blue range that could be useful for biomedical tagging, displays, and flash memories. Discrete sizes of 1.0 (Si29), 1.67 (Si123), 2.15, 2.9, and 3.7nm diameters were measured. The smallest four sizes were found to be ultra-bright blue, green, yellow, and red luminescent particles. Reproducibly fabricating size, shape and orientation-controlled fluorescent Si nanoparticles in the range 1 to 3nm could be important to the understanding of nanostructures and would be of interest in fields such as microelectronics, optoelectonics and biomedicine.

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Story in EE Times: http://www.eet.com/at/news/OEG20020207S0007