So far as I have experienced, any ATCS for IC packages is far more concerned about heat removal, not the addition of heat to the IC. There is more of a focus on good heatsinking with active cooling elements. High performance systems may use thermoelectric cooling modules. Overclockers can go to more exotic lengths like liquid nitrogen cooling.
I have heard of thin heaters used in testing and simulating the heating load produced by advanced ICs for development of cooling systems.
If you have other experience with the need for heating the IC, could you explain further?
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