NIST successfully mitigates noise in superconducting thin-film sensors.NIST (National Institute of Standards & Technology, Washington, DC, www.nist.gov) The standards-defining agency of the U.S. government, formerly the National Bureau of Standards. It is one of three agencies that fall under the Technology Administration (www.technology. researchers are building large-format arrays of cryogenic cryogenic /cry·o·gen·ic/ (-jen´ik) producing low temperatures. cry·o·gen·ic adj. 1. Relating to or producing low temperatures. 2. sensors for materials analysis and astronomy astronomy, branch of science that studies the motions and natures of celestial bodies, such as planets, stars, and galaxies; more generally, the study of matter and energy in the universe at large. . The performance of these sensors has been limited by excess noise sources not explained by existing theories. Researchers recently measured sensors with different geometric noise-mitigation features and identified designs in which the excess noise is heavily suppressed. The most interesting features implement normal-metal bars across the sensor in the direction perpendicular to the current flow. These results provide clearer understanding of noise sources in superconducting su·per·con·duct·ing adj. Having, exhibiting, or capable of superconductivity: "a revolutionary superconducting magnetic propulsion system" Colin Nickerson. films. It is hoped that these designs will result in improved detector performance. CONTACT: Joel Ullom, (303) 497-4408; ullom@boulder.nist.gov. |
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