Form：集微网 2018/4/16Browse：4914
University of Basel professor Dominik Zumb HL and his colleagues successfully nano electronic chip cooling temperature to 2.8 milli Kelvin, which is about 273.15 degrees below zero centigrade. The researchers say: "magnetic cooling is based on the principle that when the external magnetic field gradually decreases, the system will gradually cool down, while avoiding any external heat flow.
