The reporter learned from the team of Professor Ma Yanming from the School of Physics of Jilin University that the team used a self-developed crystal structure prediction method (CALYPSO) to propose that a compressed hydrogen-rich compound can conduct electricity without resistance at temperatures up to 200 ° C. If this prediction is confirmed in experiments, this material will be in stark contrast to all other known superconducting materials-in the current situation, superconductors must be cooled below room temperature to work.
Team member Professor Liu Hanyu explained to reporters that superconductors generally work at lower temperatures, which limits their use. Therefore, physicists have been looking for superconductors that can withstand high temperatures. Once discovered, they will completely change the way electricity is transmitted and save a lot of energy.
Ma Yanming ’s team reported in the latest issue of Physical Review Letters that their latest predicted superconductor, a compound composed of hydrogen, magnesium and lithium, can work at 200 ° C, but this compound must also withstand Extreme pressure of almost 2.5 million times the atmospheric pressure of the earth.
Previously, scientists have used similar techniques to predict that pressurized compounds of lanthanum and hydrogen may be superconducting above any known temperature. This prediction seems to be confirmed-in 2018, the team of Professor Russell Hemley of the University of Illinois at Chicago reported that there were signs that the superconducting temperature of LaH10 reached a record-breaking -13 ° C.
Liu Hanyu said that the research is currently only theoretically predicted and needs to be realized under extremely high pressure, mainly to provide ideas for the design of atmospheric high-temperature superconductors. If the new calculation results are confirmed by experiments, the theoretically predicted superconductor may break the superconductor temperature measurement record set by the Hemley experimental team. In addition, the work also proved that CALYPSO is an effective method and means for designing functional materials. (Reporter Liu Xia)
Common rail test bench is becoming popular in the automotive after-Service market.
Common rail injection system is an electronic diesel injection system, which is adopted on most modern vehicles. To diagnose and maintain the electronic injector, common rail injector test bench is the perfect choice.
Common rail diesel test bench could test both solenoid and piezo injector, applicable to Euro 3 Euro 4 Euro 5 Euro 6, all brands including Bosch, Delphi, Denso, Cummins, Caterpillar etc.
Common Rail Test Bench,Common Rail Pump Test Bench,Common Rail Injector Test Bench,Common Rail Test Equipment
CHENGDU UNICO MACHINERY CO., LTD , https://www.injectortestbench.com