Even small children know better than to put anything metal inside a microwave oven. But automotive engineers at Dana Corp. are doing just that as they look for more efficient ways to heat metals. Normally, metals placed in a microwave oven would reflect the microwaves, thereby damaging the microwave source. Surrounding the metal with microwave-absorbing plasma, however, prevents the microwaves from reflecting, making microwaves a much more sensible heat source. Researchers estimate that using microwaves to heat metal will improve part quality and cut processing times for metal processing. For more information, go to http://rbi.ims.ca/3853-527.
Producing high-quality end-production metal parts with additive manufacturing for applications like aerospace and medical requires very tightly controlled processes and materials. New standards and guidelines for machines and processes, materials, and printed parts are underway from bodies such as ASTM International.
Engineers at the University of San Diego’s Jacobs School of Engineering have designed biobatteries on commercial tattoo paper, with an anode and cathode screen-printed on and modified to harvest energy from lactate in a person’s sweat.
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