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Surface current distribution provides an intuitive perspective on how the current flows, which is critical for high speed design. The surface current distribution for the power distribution network (PDN) in printed circuit board (PCB) is related to the input impedance observed by the IC looking into the PCB PDN. Two different principle methods are used to describe the current distribution, namely...
The electron transport properties of carbon nanotube (CNT) metal/semiconductor/metal heterostructures are investigated using the first principles method based on density functional theory (DFT) and non-equilibrium Green's function (NEGF). The atomic heterostructures are constructed by sandwiching a zigzag semiconducting CNT between two zigzag metallic CNTs with different diameters. The density of...
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