Why is this even an issue, unless you're planning to sell the fluid outside computer cooling. The turbulence of the fluid through the pump and tubes is plenty enough to keep the particles suspended indefinitely.
If computer off for 6 months, no problem, them selttling will go away as soon as you introduce turbulence with the startup of the pump.

David


Quote Originally Posted by relttem View Post
That was a surfactant problem, which we are working on now. The surfactant, for those that don't know, is going to keep the nanoparticles separated in the fluid. If they agglomerate, which I have mentioned earlier as a problem, you have what is called "stokes settling", and this gets worse as more agglomeration occurs. The rate of agglomeration occurring is going to be a function of the available surface area. So, basically, the surface area doubles when two particles stick together and increases as more stick..that gives more mass, which is going to cause the particles to settle faster. But, we are definitely working on that because that, to us, is the most important thing.