Fe-18 at.%Ga alloys with magnetostrictive coefficients up to 400 ppm are expected to have high damping based on the magneto-mechanical hysteresis damping (MMHD) model. However, in some studies of the magnetostrictive properties of Fe-Ga alloys, it was found that the magnetization curves of Fe-Ga alloys seem to be reversible, linear, and non-hysteretic curves, which indicates the damping is zero for Fe-Ga alloys. This contradiction makes it a challenge to explore the damping mechanism of iron-based high damping alloys and possible ways to increase the damping of the alloys.
A novel detection technology, developed by a research team led by Prof. ZHANG Weijun from Hefei Institutes of Physical Science (HFIPS), Chinese Academy of Sciences (CAS) recently, realized fast and sensitive detection of nitrogen dioxide (NO2).
Recently, a joint research team led by Prof HU Linhua Hefei Institutes of Physical Science (HFIPS), Chinese Academy of Sciences (CAS) and Prof JI Denghui from Shijiazhuang University developed a hydrogel electrolyte, which endowed battery with better stability which can be used in wider temperature range (-20 to 60 °C), more flexible device application, and larger capacity.
A research team led by Prof. XIONG Wei from Hefei Institutes of Physical Science (HFIPS), Chinese Academy of Sciences (CAS), monitored and analyzed the greenhouse gas concentrations before and after Tonga eruption with the Greenhouse Gases Monitoring Instrument (GMI).
With good properties, heavy/high-Z metal material has been considered as the first choice for plasma facing components in International Thermonuclear Experimental Reactor (ITER). However, at thermonuclear fusion relevant temperatures, the accumulation of heavy/high-Z particles (impurities) in the core region may significantly cool the plasmas, deteriorating the plasma performance and leading to H to L-mode back transition and even further to radiative collapse. Therefore, it is important to know more about the core heavy impurities transport so as to control their central accumulation for the stable operation of Tokamak fusion devices.