Why nano engineering is a new field, what is nanotechnology? How the length scale play a critical role in hybrid materials. The course focus on the transition from metal to composite to nanomaterials. The emphasis is on nanomechanics and how nanomaterials can be put to useful engineering applications. The course will include three reasons for using nano, and will include nano-engineering in damage mechanics and impact dynamics. The critical component of design is safety of materials usage. The nanomaterials is more expensive, and thus, their use is limited to the case when the same design and use of structures cannot be done by using composites (or metals).