Researchers at Rice University in the US have measured the stiffness of different types of joined-up nanotubes in the most detail ever, and have found that some shapes are tougher than others. The work could help in the design of nanotube-based materials for specific applications in the future, as well as to build 3D structures from these nanomaterials…..
http://nanotechweb.org/cws/article/tech/63561