US and Russia researchers claim to have produced a reliable molecular diode and have a theoretical model of its operation. “The mechanism for conduction is tunnelling by one electron at a time,” ...

And here it is, modelled using LTSpice. It is the same circuit as the classic simple precision rectifier (set to pass the negative half-sine), but with the non-inverting input of the op-amp connected ...

A thirteen-year-long mystery that has involved a long series of researchers has finally been solved. A new article presents a diode in printed electronics that works in the GHz band, which opens up a ...