Two non-contacting, claw-type rotors in an oil-free chamber provide the vacuum for the Busch MM Series (www.buschpump.com) dry vacuum pump. Busch engineers say it's for applications where dust particles are present. The non-contacting design means no wear in the pumping chamber, they say, so maintenance is low.
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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