Nanowire Transistor Quantum Confinement (2D)

Shrink a gate-all-around nanowire channel down to a few nanometers and quantum mechanics starts setting the transistor's electrical limits: treating the wire as an infinite cylindrical well quantizes its radial subbands at energies set by the zeros of the Bessel function, and the lowest subband climbs as 1/R² as the diameter shrinks. This 2D simulator draws the nanowire cross-section — pannable and zoomable — with its wraparound gate and an accumulation ring of conduction electrons, alongside a channel band diagram that bends under the gate as bias increases, and computes the first three confinement subbands, the resulting threshold-voltage shift, and a subthreshold-to-saturation drain current live as you sweep diameter, channel material, gate voltage and temperature.