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3D打印产品的超导性能

作者:www.ruishiye.com  时间:2017-07-30
 
     
      3D printing is revolutionizing many areas of manufacturing and science. In particular, 3- medical implants, for 3-D printing with metals,-controlled melting or sintering of a metal alloy powder by a laser or electron beam. The mechanical properties of parts produced by this method have been well studied, on their electrical properties.英语小短文
     Now in a paper appearing this week on the cover of the journal Applied Physics Letters, from AIP Publishing, researchers report creating a resonant microwave cavity that they 3-D printed via an aluminum-silicon alloy . It exhibits superconductivity when cooled below the critical temperature of aluminum .
     "Conductivity is a measure of how easily an electrical current flows through a material, while 'superconductivity' is this measure taken to its extreme," explained Professor Michael Tobar, node director of the Center for Engineered Quantum Systems. "It's an effect observed within a number of materials, vanishing of any resistance to the flow of electrical current when cooled below a certain temperature."
      areas of physics --, often involving nonstandard geometries and arrays of resonators, which makes conventional machining more challenging.
     So two groups at the --, an expert in materials and 3-D printing, and the other led by Tobar, an expert in engineered quantum systems and novel cavity designs -- their expertise and launched a pilot study to explore the superconducting properties of 3-D printed parts.
     "The physics of superconductivity is well understood, and it has been known for decades that aluminum exhibits superconductivity," Tobar said. "But the 3-D printing process relies on aluminum that's far from pure and it undergoes several processes -- atomization, laser melting, furnace annealing, etc. be 3-D printed and retain their desirable electrical property."
     
     
     
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