NOVELTY - A heat dissipater structure (58) is placed on a portion of heat source structure (54). Thermal energy from the source structure heats a portion of dissipater structure. A fluid dispenser system (72) directs fluid droplets (68) towards the dissipater structure. A fan (62) directs gas (64) towards the dissipater structure to entrain the fluid droplets for forming a gas/fluid droplet mixture. The mixture contacts the dissipater structure to move the fluid droplets to the dissipater structure. Thermal energy from the dissipater structure is dissipated when fluid droplets evaporate.    USE - Thermal management device for removing heat from the operation of electronic devices. Uses include but are not limited to a computer chip, an electronic component, a display, an engine, a fuel cell or other power generation device e.g. solar cell, a chemical reactor and a light source.    ADVANTAGE - The fluid droplets on the heat dissipater structure absorb heat from the heat dissipater structure and evaporate to remove the heat from the heat dissipater structure easily. The modification of the heat sink allows exploiting of high heat flux evaporative cooling by virtue of delivering streams of liquid droplets or jets to the highly thermally conducting, heat spreading surface of the heat sink fins. The phase change associated with liquid droplet evaporation results in significant enhancement of the dissipated thermal load, beyond what could be achieved by using air cooling alone. The device can be easily implemented i.e. modification of commercially available heat sinks, for a power-efficient, low-cost thermal management of high power dissipation devices.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the method of dissipating heat in a heat source structure.    DESCRIPTION OF DRAWING(S) - The drawing shows the schematic view of the thermal management device and a heat source structure.    Heat source structure (54)    Heat dissipater structure (58)    Fan (62)    Gas (64)    Fluid droplets (68)    Fluid dispenser system (72)