Abstract: A SiC ohmic contact preparation method is provided and includes: selecting a SiC substrate; preparing a graphene/SiC structure by forming a graphene on a Si-face of the SiC substrate; depositing an Au film on the graphene of the graphene/SiC structure; forming a first transfer electrode pattern on the Au film by a first photolithography; etching the Au film uncovered by the first transfer electrode pattern through a wet etching; etching the graphene uncovered by the Au film through a plasma etching after the wet etching; forming a second transfer electrode pattern on the SiC substrate by a second photolithography; depositing an Au material on the Au film exposed by the second transfer electrode pattern and forming an Au electrode and then annealing. The graphene reduces potential barrier associated with the SiC interface, specific contact resistance of ohmic contact reaches the order of 10?7˜10?8 ?·cm2, and the method has high repeatability.

Abstract: Embodiments of the present disclosure provide a device, an apparatus, and a method for controlling infusion. The device may include a multi-port container assembly and a liquid flow controller. The multi-port container assembly includes a multi-port container having a plurality of inlets and an outlet, a detector configured to detect amount of liquid in the multi-port container, a first communication subassembly, and a first controller. The first controller may send a first signal to the liquid flow controller via the first communication subassembly in response to the detector detecting that the amount of liquid is lower than a first predetermined threshold. The liquid flow controller may turn off a first infusion tube currently used and turn on a next first infusion tube in response to receiving the first signal.

Abstract: Embodiments of the present disclosure provide a device, an apparatus, and a method for controlling infusion. The device may include a multi-port container assembly and a liquid flow controller. The multi-port container assembly includes a multi-port container having a plurality of inlets and an outlet, a detector configured to detect amount of liquid in the multi-port container, a first communication subassembly, and a first controller. The first controller may send a first signal to the liquid flow controller via the first communication subassembly in response to the detector detecting that the amount of liquid is lower than a first predetermined threshold. The liquid flow controller may turn off a first infusion tube currently used and turn on a next first infusion tube in response to receiving the first signal.

Abstract: Embodiments of the present disclosure provide a device, an apparatus, and a method for controlling infusion. The device may include a multi-port container assembly and a liquid flow controller. The multi-port container assembly includes a multi-port container having a plurality of inlets and an outlet, a detector configured to detect amount of liquid in the multi-port container, a first communication subassembly, and a first controller. The first controller may send a first signal to the liquid flow controller via the first communication subassembly in response to the detector detecting that the amount of liquid is lower than a first predetermined threshold. The liquid flow controller may turn off a first infusion tube currently used and turn on a next first infusion tube in response to receiving the first signal.