backtop


Print 88 comment(s) - last by Archmaille.. on Jun 16 at 4:29 PM


The OCZ Hydrajet cooler, featured upside-down to reaveal the carbon nanotube conductor. (Source DailyTech, Anh Huynh)
The OCZ Hydrojet cooler uses an advanced heatsink material

The first heatsink to make use of directional carbon nanotubes, the OCZ Hydrojet, was on display at Computex 2007. Carbon nanotubes, an allotrope of carbon, are widely regarded as the next major thermal interface material because of their superior thermal conduction properties.  

The contact base of the OCZ Hydrojet is made completely of carbon-nanotubes, which OCZ claims are five times more efficient than copper. Carbon nanotubes have been looked upon as a strong alternative to traditional copper based heatsinks. They are ideal for application in heat transfer products because of their impressive heat-conduction properties.  Carbon nanotube based interfaces have been shown to conduct more heat than conventional thermal interface materials at the same temperatures. In addition, they have shown to be ballistic conductors at room temperature, which means electrons can flow through CNTs without collisions.

Carbon nanotubes are small wire-like structures made out of a sheet of graphene.  The sheet of graphene used to construct CNTs is roughly one-atom thick, and is rolled up into a cylinder. The diameter of the cylinder ranges in the nanometers.

Unlike most other thermal materials, carbon nanotubes are able to move heat in one direction. On the other hand, copper, which is looked upon as one of the more superior thermal materials, moves heat radially. In the case of CNTs, heat is moved along the alignment of the nanotubes.


Comments     Threshold


This article is over a month old, voting and posting comments is disabled

RE: needs some work
By SmokeRngs on 6/11/2007 10:06:32 AM , Rating: 2
quote:
My point was that water as a transport is not the main reason why water cooling is effective.


This is not completely correct. The water is a big reason why water cooling is more efficient. While copper absorbs heat better than aluminum, it does not release the heat as easily. Water acts as an intermediate between the two. In most cases, water can pull the heat off the copper plate a lot better than aluminum keeping efficiency high. The water then travels to the radiator where the larger surface area of the aluminum dissipates the heat much more quickly than the copper.

Water allows both materials to work more efficiently together.

Now, I wouldn't mind seeing a carbon nanotube based waterblock. The results from that would definitely be interesting. It absorbs and releases heat more efficiently than copper and would be very well suited to replace it as the base material in a waterblock.


"Google fired a shot heard 'round the world, and now a second American company has answered the call to defend the rights of the Chinese people." -- Rep. Christopher H. Smith (R-N.J.)











botimage
Copyright 2014 DailyTech LLC. - RSS Feed | Advertise | About Us | Ethics | FAQ | Terms, Conditions & Privacy Information | Kristopher Kubicki