“…Meanwhile, precursors from group III such as trimethyl gallium (TMG), are injected from the side inlet of the showerhead, coupled to the substrate via the other set of holes and heated by the pedestal. As multiple physics including fluid mechanics, chemical reaction, heat and mass transfer, and electromagnetics needs to be coupled to simulate N 2 ICP, the geometry of the reactor is simplified to a 2D axisymmetric model, as shown in figure 1(b), to reduce the computational consumption [11,15,16].…”