Nanoindentation of natural materials : hierarchical and functionally graded microstructures The book will provide critical information regarding the basics of hierarchical and functionally graded structures and nanoindentation techniques along with detailed discussion with correlation micro nano mechanical structures. The readers will be able to identify the advantages of this method in purview of characterizing natural bio composites Basics of hierarchical and functionally graded structures and mechanical characterization by nanoindentation : a paradigm shift for nano micro structural length scale Arjun Dey Deeksha Porwal Nilormi Biswas Aniruddha Samanta Manjima Bhattacharya Mohammed Adnan Hasan A.K. Gupta and Anoop Kumar Mukhopadhyay Nanoindentation of bone : a tough hybrid composite Manjima Bhattacharya Anoop Kumar Mukhopadhyay and Arjun Dey Nanoindentation of teeth : a hard but tough hybrid functionally graded composite Nilormi Biswas Anoop Kumar Mukhopadhyay and Arjun Dey Fracture toughness of enamel region : role of DEJ and modeling of fracture toughness Nilormi Biswas Arjun Dey and Anoop Kumar Mukhopadhyay Nanoindentation creep of enamel and dentin tissues Nilormi Biswas Arjun Dey and Anoop Kumar Mukhopadhyay Nanoindentation of hair fiber : a tough hierarchical layered architecture Aniruddha Samanta Manjima Bhattacharya Anoop Kumar Mukhopadhyay Shekhar Nath and Arjun Dey Nanoindentation of shell and scale : a hard tough layered functionally graded hybrid composite Manjima Bhattacharya Anoop Kumar Mukhopadhyay and Arjun Dey Combined nanoindentation and finite element approach in hierarchical and functionally graded structures Deeksha Porwal Arjun Dey A.K. Gupta Kallol Khan Anand Kumar Sharma and Anoop Kumar Mukhopadhyay Conclusions Arjun Dey Nilormi Biswas Aniruddha Samanta Manjima Bhattacharya and Anoop Kumar Mukhopadhyay