The Aurificusian Hypothesis

[Aurificus]

Still all this talk of thermistors, bi-metal contacts, closed loops etc. etc.
all very standard, conventional stuff and well known (c1750-1915) to produce very small phenomena.


The 'Experiment' will require a metal conductor 'encased' in a large semi-conductor to create a fully enclosed Schottky type barrier.
The contact between conductor and external media will need to be "very" close, ie. with some electron sharing (like..say.. long time "buried")

Energy source will be a thermal gradient between top of media and bottom.
Energy transfer into the metal will be greater than transfer out, leading to an increase of the internal energy.
This will excite electrons in the metal and cause them to seek the lower energy areas at the lower boundary surfaces.(charge carrier diffusion)

They will be held at this surface by the increasing energy level behind them. They cannot transfer their energy out quickly due to the lower temp gradient at the bottom compared to the top and they are trying to transfer energy to a low thermal conductive material by phononic atomic vibration (slower).

They will also create a voltage potential across the barrier by displacing electrons in the semiconductor medium. When the potential has reached the forward voltage requirement (say, .2 -.5V for commercial Schottkys, who knows for this?) a current will flow across the barrier. It is a function of the Schottky barrier that the switching takes micro seconds.

The current might be small but is extremely quick resulting in a brief but intense pulse of EMR maybe several mW. or even more, possibly quite detectable from a distance.

Question is... how to build such an experimental device?

They appear to be rather rare and hard to find in nature!!
And the exposing of a potential find destroys the "structure".

Remember also that, the introduction of wires between separate elements
with different temperatures and crating a circuit will produce their own voltage potentials by Seebeck/Thompson/Lord Kelvin .... Thermoelectric effects.... which may negate the potential required for the device to function.

Phew,
Aurificus

PS. This is just a theory to explain a reported phenomena no need to "git all het up"