Boron Nitride Nanotube Fabrication

Boron nitride nanotubes (BNNTs) provide many positive attributes over carbon nanotubes. BNNTs offer extraordinary mechanical properties and high thermal conductivity.  They also provide uniform electrical properties and high oxidation resistance. BTTNs are ideal for applications requiring high heat resistance, for computer chip manufacturing and insulation, and in cancer treatment known as Boron Neutron Capture Theory. However the difficulty of fabricating BNNTs has hindered their commercial adaptation.

At Michigan Tech, researchers have recently developed a new fabrication process that may make BTTNs more commercially competitive. A simple growth procedure has been developed to produce BNNTs in a conventional resistive tube furnace. The uniqueness of this approach utilizes a closed-end quartz tube to trap the growth vapor to enhance the nucleation probability of BNNTs at relatively low temperatures. Additionally, this process incorporates a magnesium oxide (MgO) coating on the substrates which further enhances the yield of BNNTs and allows for growth directly on the substrate. The fabrication process requires only a conventional tube furnace and is capable of producing higher yields through a more efficient conversion process.

A provisional patent application has been filed on this technology. Exclusive or nonexclusive license options are available. For more information contact John Diebel in the Office of Innovation and Industry Engagement, 906-487-1082.