Positive temperature particles escape as photons, leaving behind negative temperature particles. If these negative temperature particles are driven in a closed loop, in circular motion clockwise, they will generate a positive gravity potential, upwards. A lifting effect.
In retrospect, the lighting coil of a incandescent bulb is already using this mechanism to pry out positive temperature particles for luminescence.
A similar way to separate positive and negative gravity particles is also shown in the bottom figure above, where spinning negative gravity particles are diverted away from the main particle stream by a negative electric potential surrounding the center core conductor. The following is an illustrative diagram of two possible implementations.
Very little current should pass between the core and the surrounding conductor or coil. In the case of separating temperature particles, both conductors should be good conductor of heat, but at least one of them should be a bad conductor of electricity.
Have a nice day.