The finding was made by accident, during a different study

Oct 17, 2011 10:36 GMT  ·  By
Images taken with aFESEM  show the nanowire bristles that form on copper particles of different sizes. At top right, a cross-section of one of the particles reveals its hollow interior
   Images taken with aFESEM show the nanowire bristles that form on copper particles of different sizes. At top right, a cross-section of one of the particles reveals its hollow interior

Researchers at the Massachusetts Institute of Technology (MIT) announce the discovery of a new class of hierarchical structures. The nanoparticles could be used for high-efficiency thermal management in microprocessors, huge powerplant boilers, and many other applications.

The particles were obtained through sintering, a standard process used to create heat sinks for electronic devices. Usually, the process takes place in a vacuum, but a group of MIT students tried it in air, and got a surprising result.

Instead of powdery metals solidified in a certain shape, they got zinc nanoparticles that were covered in fine nanowires. The density of the wires themselves was a direct function of the size of the original zinc particles.

At this time, the MIT group is working on applying the same method on zirconium instead of zinc. If their work is successful, then they might just produce a new heat dispersant material for nuclear reactors.