| Abstract: | The various technologies presented herein relate to fabrication and
operation of a heat exchanger that is configured to extract heat from an
underlying substrate. Heat can be extracted by way of an air gap formed
between an impeller and a baseplate. By utilizing a pump to create an
initial air gap that is further maintained by rotation of the impeller
relative to the baseplate, a spring can be utilized that can apply a
force of greater magnitude to the impeller than is used in a conventional
approach, thus enabling the weight of the impeller to be negligible with
respect to a width of the air gap, thereby conferring the desirable
feature of orientation independence with respect to gravity with no
performance degradation. |