Thermal grease, commonly known as thermal paste, plays an important role in controlling the heat of electronic devices.
Its main function is to facilitate heat transfer from hotter components (such as CPUs or GPUs) to cooler components 
(such as heat sinks) by filling the air gaps between surfaces. At the molecular level, there are several mechanisms 

that can explain how thermal oils improve thermal conductivity:
The surfaces of heat sources (such as CPUs) and heat sinks may appear smooth to the naked eye, but in reality, they are rough
and uneven on a microscopic scale. These uneven areas will create small air gaps when in contact with the surface, which willhinder heat transfer as air is a poor conductor of heat. Thermal grease will fill these air gaps and replace air with materials with
much higher thermal conductivity, thereby improving heat transfer efficiency.

Thermal conductive grease is made by mixing basic materials such as silicone or synthetic oil with thermal conductive particles
such as metal, ceramic, or carbon. These particles form a thermal conduction pathway network in the oil, allowing heat to
propagate more efficiently than through the base material alone. This network improves the overall thermal conductivity of
the interface.

The heat transfer efficiency of an interface is inversely proportional to its thermal resistance. Thermal conductive silicone grease
 can improve the contact between the heat source and heat sink, and provide a medium with stronger thermal conductivity,
 thereby reducing the thermal resistance at the interface. This can dissipate heat more effectively.