This is a fascinating subject, not only for harvesting power from the DPF production of X-rays, but also as a method to get a few extra watts cheaply from the waste heat that the device will produce. If it works, the method should scale down economically to any source of heat.
As an electrician, I can suggest another application right away. Having installed several sets of solar panels, I learned from experience not to touch them when they have been exposed to the sun for a while. The natural heat build up is a source of hazard and inefficiency. When the panels are hot, they yield less watts per lumen. Extracting the heat to generate electricity would increase the efficiency of the panels, a double win.
Doncha love modern technology?
