A system to provide effective removal of heat from a high power density
device. The system has a heat spreader and a heat sink structure. The heat
spreader is divided into one or more chambers. Electromagnetic pumps are
placed inside each chamber in a configuration that facilitates easy
circulation of liquid metal inside the chamber. The liquid metal
preferably is an alloy of gallium and indium that has high electrical
conductivity and high thermal conductivity. The liquid metal carries heat
from a localized area (over the high power density device) and distributes
it over the entire spreader. This results in a uniform distribution of
heat on the base of the heat sink structure and hence effective removal of
heat by the heat sink structure.
