The drawback of this strategy is the Ga-CCCD alone provides limited tuning range of the carrier concentration that it may fall outside what is needed to achieve the optimal electrical per- formance in skutterudites. To significantly increase the carrier concentration of Ga-doped skutterudites, ...
However, the initial fluidization regimes just above the minimum fluidization velocity display either a slugging motion of large bubbles or smaller bubbles coalescing to form larger bubbles as they find their way to the top of the bed. These large bubbles are detrimental to the desired mixing ...