I don't know a lot guys you maybe able to learn more about it by using google.
Investigation of Increased Thermal Conductivity of Nanofluids

Fluids containing suspended solid metallic or nonmetallic particles (nanofluids) display enhanced thermal conductivities. The aim of this study is to identify and understand the mechanisms behind this increase and to develop a suitable model to predict the thermal conductivity for a variety of nanofluid systems.

There are microscopic pieces of copper in what I am running. The guys that sent it to me were testing and mixing the stuff for military applications. one guy is interested in water cooling and decided to dump it in his system. He said he is seeing some of the same things I seen so far. didn't change anything at all untill I started OC then I seen my temps didn't move. I am sure it needs pushed more but I have some troubles doing that at the moment. (darn bum thumb)