The Office of Naval Research and the Defense Advanced Research Projects Agency are funding development of a new thermoelectric material at Research Triangle Institute (RTI) that responds 23,000 times faster than existing thermoelectric materials. "The secret is our use of alternating layers of bismuth and telluride antimony," says Rama Venkatasubramanian, the researcher who developed the material. "We made a super lattice where electrons flow freely, but thermal processes are inhibited." A thermoelectric module with just one square centimeter of the new material provides 700 watts of cooling under a temperature gradient of 58F, according to Venkatasubramanian. "This will almost certainly improve the performance and capability of many cooling and power-generation systems for Department of Defense applications," says Valerie Browning, program manager at DARPA's Defense Sciences Office. Anticipated applications for the thermoelectric material include fiber-optic switches, microprocessors, power electronics, laser devices, infrared imaging, and microelectrothermal systems. RTI is a non-profit research organization. Small "laboratory quantities" are available now. For more information, e-mail Venkatasubramanian at email@example.com or go to www.rti.org/units/es/csr/rama.cfm.
On Memorial Day, Americans remember the sacrifices the US armed forces have made, and continue to make, in service to the country. All of us should also consider the developments in technological capabilities and equipment over the years that contribute to the success of our military operations.
In order to keep in line with safety protocols, industrial networks need to be filtered in a semantic way so that only information related to diagnostics is flowing back to the vendor and that any communications that could be used for remote machine operations are suppressed.
Advanced visualization can depict an entire plant in motion, while also detailing an individual workstation. Individual products can be rendered different for each discipline involved — marketing, engineering, or suppliers.
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