If a plasma screen hummed at high altitudes, would you hear it? A recent issue of the New York Times stated that "plasma hums when used at 6,500 ft or more above sea level." Huh? A spokesperson for flat panel maker Phillips acknowledged that the company is "looking into the matter" but isn't prepared to talk to the press, yet.
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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