Canatu has developed a new material, the Carbon NanoBud®, which is a hybrid of Carbon Nanotubes and fullerenes. The hybridization is achieved directly in the material synthesis process and the resulting material combines the best features of both fullerenes and nanotubes.
NanoBuds® have many applications and enable a variety of new nano-components to be developed. This novel material has already been demonstrated to have numerous advantages in mechanical, electrical, chemical and optical properties as compared to traditional nanotubes.
Traditional carbon nanotubes, despite their many unique properties, are largely chemically inert and thus do not bond well to other molecules. Typically, in order to do this, the tubes must be damaged to create usable reaction sites. These defects, however, reduce the performance of the material.
In Canatu's proprietary NanoBud® material, on the other hand, reactive fullerenes are combined with nanotubes without creating defects. Thus, the amazing properties of nanotubes are maintained while allowing additional useful chemical enhancement.
Films for flexible touch
NanoBuds® have tunable electrical conductivity, high strength, low density, high thermal and mechanical stability and high electrical and thermal conductivity like traditional carbon nanotubes, but also high reactivity, low work function and chemical functionalizability like fullerenes. In addition, they have been shown be much superior field emitters than traditional nanotubes and have the added benefit that they need not be aligned for the purpose. This makes NanoBuds® ideal for a tremendous range of applications.
Canatu's first products focus on taking advantage of the high conductivity, high aspect ratio, low work function, chemical stability and mechanical flexibility of NanoBuds® to make the world's highest performance carbon based transparent conductive film for transparent conductors in touch, haptics, displays and photovoltaics. These films, consisting of randomly oriented deposits of NanoBuds on polymer or glass substrates, are flexible, bendable, stretchable and have excellent transparency conductivity performance as shown below. Since 2007 Canatu has been able to double the conductivity at a given transparency approximately every 12 months (Brown's Law). Moreover, Canatu is able to deposit on very thin (below 30 um) substrates, resulting in ultra thin componets with no optical tint, haze below 1% and an index of refraction closely matching both glass and PET.