Nonlinear Optical Properties of Nano Composite Materials |
Composite materials possess certain characteristicproperties such as high strength or high modulus and low weight along with goodtoughness. High strength or high modulus and light weight are attained inglass, silica, carbon, boron, etc. in the form of fibers. But they do notpossess high toughness or ductility. They easily undergo fracture which iscaused by a rapid progress of a small crack. However if high quality fibers ofthese materials get embedded in a ductile matrix (like a metal or a plastic),the composite has a combination of high toughness with high strength and lowweight. The soft and ductile matrix protects the surface of the fibers fromacquiring cracks and also arrests the propagation of cracks already present.Wood, bamboo, bone, and tooth are the typical examples of natural or organiccomposite materials.