2007 NSTI Nanotechnology Conference and Trade Show - Nanotech 2007 - 10th Annual

Nano-Composite Interface with CNTs Films

G. Lanzara and F.K. Chang
Stanford University, US

Keywords:
carbon nanotubes, PZT, CNTs, interface, shear strength

Abstract:
In this research we are proposing a unique approach based on nano-technology to enhance the bond strength of Piezoelectric actuators- to the structure. The novel bond is based on a composite nano-structured film. The key feature is the integration of a high density array of oriented carbon nanotubes, into the adhesive bond. The fabrication process, the mechanical testing and the failure mechanism are presented. The preliminary result shows that the nano-structured bond has a nearly 300% improvement in bond shear strength. This is due to the fact that oriented CNTs play an important role in the bond failure mechanism. In fact the analysis of samples after failure shows that CNTs slow down fracture propagation because they keep together the edges of a propagating fracture until their pull-out from the matrix occurs.

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Nanotech 2007 Conference Program Abstract

 
 

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