Figure 1
From: Thermal electron-tunneling devices as coolers and amplifiers
System schematics.
(a) Thermal electron-tunneling devices that can serve dual purposes of cooling and amplification spontaneously with Th > Tm > Tc; The thermal energy, qh, exits from the hot reservoir and is used as a power source, which allows the thermal energy, qc, to be released from the cold reservoir and lets the thermal energy, qm, be pumped to the median reservoir. (b) For μc > μh, electron and thermal fluxes flow in the same direction with Emh being the lowest tunnel energy level. (c) For μc < μh, electron and thermal fluxes flow in the opposite direction with Emh being the highest tunnel energy. Red arrows in (b,c) indicate directions of electron fluxes.
