Robert M. Dickson, an assistant professor of chemistry and biochemistry at Georgia Tech, says that silver could increase the amount of storage in optical devices. "One could potentially store more than 1 bit/data point by using color to store the information," says Dickson. For example, red and green mix to make yellow in computer displays for producing different shades of yellow. Dickson showed that clusters of silver atoms produced fluorescent emissions. Using the correct distribution of particle sizes, the multi-color emissions allow storage of more than one bit in each data point. "The different shades could be used to store more information per point. The storage density would then be related to the number of distinguishable colors," he says. He successfully demonstrated binary optical storage with the new system by writing and reading images recorded on thin films made of silver oxide. For more information, contact Dickson at (404) 894-4007.
The implementation of a new diesel fuel standard in the US has considerably improved the environmental performance of diesel vehicles. The Environmental Protection Agency (EPA) says that the new ultra-low sulfur diesel (ULSD) fuel has combined with other improved technologies to reduce diesel's particulate matter (PM) emissions by 99%.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.